hydraulic cone crusher speed

hydraulic cone crusher,smh series high efficiency hydraulic cone crusher,pebbles crusher-yifan machinery

Feed size: 425mm production capacity :40-1495t / h. Crushing materials: iron ore, copper ore, slag, slag, pebbles, quartz, granite, basalt, diabase.Applications: metal mines, sand and gravel yard, concrete mixing plant, dry mortar, glass industry quartz sand.

CCH series hydraulic cone crusher is the cone crusher developed after the absorption of the world advanced crushing technology with the advanced level, the more widely used in metallurgy, construction, utilities, transportation, chemical industry, building materials industry, suitable for crushing hard, medium hardness a variety of ores and rocks. SMH series hydraulic cone crusher is a high-performance cone crusher, will design speed and stroke, as well as crushing cavity optimized portfolio to achieve intergranular laminating crushing significantly improves yield and product shape is also greatly improved .

1, large crushing ratio, high production efficiency- Higher speed and stroke combined, the rated power of the CCH crusher greatly improved, and by the ability to improve the crushing ratio and production efficiency. The hydraulic cone crusher crushing stroke, crushing speed and crushing chamber shape perfect combination of design, 35% to 60% higher than the old-fashioned spring cone crusher production. 2, less wearing parts consumption, low running costs- Reasonable structure, advanced crushing principle and technical parameters, reliable operation, low running costs; the crusher all parts are wear protection, reduce maintenance costs to a minimum useful life of more than 30% increase in the general. 3, pyramid broken, excellent grain shape finished- Through the use of special crushing chamber the laminate design principles intergranular and matched speed, replacing the traditional single particle crushing principle, to achieve selective crushing of materials, significantly increase the proportion of product fines and cube content, very large extent, reducing the pin sheet material. 4, the hydraulic protection and hydraulic cavity clearing, high degree of automation, reduce downtime- Hydraulically adjustable discharge opening and overload protection makes the the crusher operation level greatly improved, to make maintenance easier, more convenient operation, less downtime; the CCH series cone crusher bidirectional over iron release hydraulic cylinders allow the iron through crushing chamber, the aircraft happened Iron and instantaneous stuffy car can hydraulic roof, automatic nesting, greatly reduces the original spring cone crusher shutdowns required for artificial nesting troubles, and many other manufacturers of crusher but it will be the death of downtime due to excessive iron card. 5, rare lubrication, reliable and advanced to improve life- Unique thin oil lubrication system design, greatly improving the useful life of equipment. High performance non-contact labyrinth seals wear, improve the blocking dust reliability, and fundamentally eliminate the common failure of the original spring cone crusher oil water mix. 6, a variety of crushing cavity, flexible application, adaptable- CCH cone crusher is only necessary to replace the fixed cone lining, dynamic cone lining crushing chamber shape from the standard crude cavity to short head ultrafine cavity type any transform, to adapt to a wide range of product size requirements. 7, maintenance is simple, easy to use- CCH cone crusher all parts from the top or side of the disassembly and maintenance, easy disassembly of the moving cone and fixed cone not need disassembly rack, fastening bolts, thus CCH cone crusher daily replacement of the liner and more convenient. Use of hydraulic motors, and the top so that the production efficiency of the crusher. 8, which provides a higher production capacity, best product shape, and easy automatic control, with the greatest reliability and flexibility, true to create more value for users.

1.The capacity is total tons per hour passing through crusher at open circuit when crushing medium and below hardness material and bulk density with 1.6x103kg/m3. Capacities are relative to physical character and type of feeding, feeding size and composition and so on.

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hst cone crusher, single cylinder hydraulic cone crusher - liming(shanghai)

HST series hydraulic cone crusher is combined with technology such as machinery, hydraulic pressure, electricity, automation, intelligent control, etc. Unique interparticle crushing action, Automatic control system in an all-round way, Humanized CSS adjusting system, Floating main shaft, Movable cone with shape of steep mantle and concave shape, Safe and reli...

HST series hydraulic cone crusher is mainly composed of six parts: upper frame body, lower frame body, movable cone, eccentric sleeve, transmission part and hydraulic cylinder. The horizontal shaft driven by the motor makes eccentric sleeve rotating via the gear, then the eccentric sleeve drives the movable cone rotating to realize continuous stone extrusion.

hpt hydraulic cone crusher,high efficiency hydraulic cone cru - liming(shanghai)

HPT series high efficiency Hydraulic Cone Crusher is a world-level cone crusher developed from the up-to-minute technology of Germany. Unique interparticle crushing action, Advanced hydraulic system, Integration of the hydraulic station and lubrication system,Advanced liner retention technology,Much more reliable.The cone crusher s motor drives the horizo...

The crushing principle of Hydraulic Cone Crusher is finished between fixed cone plate and movable cone plate. The cone crusher s motor drives the horizontal axis of the cone crusher through triangle belt and pulley, the horizontal axis drive the eccentric shaft bush to rotate through gear transmission. The eccentric shaft drives the main shaft to make the movable cone plate swing at a regulated track from time to time, the materials are crushed due to constant pressed and crooked in the crushing cavity. The finished products are discharged from the discharging open.

symons cone crusher

For finer crushing or reduction a Symonscone crusher the norm. Symons are commonly used for secondary, tertiary or quaternary crushing. They do this by a different chamber design which is flatter and by operating at about twice the rotational speed of a primary type gyratory crusher.

One of the first cone crushers had a direct drive vertical motor mounted above the spider with the drive shaft passing through the hollow bored main shaft. With relatively high speeds of 480 to 580 rpm and small eccentric throw, the machine produced a uniform produce with minimum fines.There are numerous Symonscone crusher manufacturers of modern crushers each promoting some unique aspect.

The Allis Chalmers Hydrocone selling point is its adjustability and tramp protection through a hydraulic support system for the headcentre. By merely adjusting the oil reservoir below the head centre the crusher setting can be changed while in full operation. Tramp metal causes a surge of pressure in this hydraulic system which is absorbed through relief valves and gas-bladder-filled accumulator bottles which allow the headcentre to momentarily drop and return to its normal operating position when the tramp has fallen through.

The Symons or Rexnord spring cone crusher is adjusted by spinning the bowl up or down manually or through hydraulic rams. A series of powerful springs give the necessary tramp protection. Several other manufacturers produce similar types and sizes of crushers but all follow the basic types described.

When the Symons brothers Invented the cone crusher, they employed the principle wherein the length of the crushing stroke was related to the free fall of material by gravity. This permitted the material being crushed to fall vertically in the crushing chamber; and in effect, caused the particles to be crushed in a series of steps or stages as the particles got smaller due to the crushing action. This also helps to reduce the rate of wear of the liners since the sliding motion of the particles is minimized.

Recognizing that the Symons principle of crushing is the most efficient means of ore and aggregate reduction in hard rock applications, the engineers used this same principle in the design on the hydrocone.

Versatility in the form of having the ability to perform in a wide range of applications without the need for a change in major assemblies was another objective in the design. Ease of maintenance and remote setting capability also were part of the design parameters the market requires.

There is no startling revelation to the fact that the mining industry as a whole is generally moving toward the use of larger equipment to process ores in quantities far greater than what was even considered a decade ago. Trucks and shovels have led the way in extra large machines and many other manufacturers have followed suit in the development of so-called supers in their line of equipment.

In order to keep pace with the industry, crusher manufacturers have also enlarged the size of their equipment. There is now on the market, a Gyratory crusher capable of accepting a 72 diameter piece of ore. Primary jaw crushers have also increased in size. It is inevitable, therefore, that larger secondary cone crushers would also be required to complement the other equipment used to process these large quantities of ore. This super-size secondary cone crusher is the SYMONS 10 Ft. Cone Crusher.

Until 1973, the largest cone crusher built was the 7 Ft. Extra Heavy Duty crusher, which is currently used in the majority of the mining operations throughout the world. The 10 Ft. crusher, when compared to the 7 Ft. Extra Heavy Duty Crusher, is approximately 1 times larger in physical dimensions; three times heavier; will accept a maximum feed size which is approximately twice as large; and will crush at approximately 2 times the rate of the 7 Ft. machine at identical closed side settings. It will be the largest cone crusher built in the world.

The conclusions of this investigation were all positive the crusher could be built and at a cost that would be in line with its size and capacity and also with other size crushers. After that preliminary study, the project became dormant for several years.

The project was reactivated and this time general assembly drawings were made which incorporated many improvements in the crusher such as pneumatic cylinders in place of the conventional, springs for tramp iron release, a two-piece main frame a dynamically balanced design of the internal moving parts of the crusher, and an automatic clearing and adjusting mechanism for the crusher. At this stage of development we felt we were ready to build a 10 Ft. crusher for any mine that was willing to try one. Unfortunately, the conservative posture of the mining industry did not exactly coincide with our sales plans. This, added to the popularity of the autogenous mill concept at the time, led to another lull in the 10 Ft. development program.

The project was reactivated again in 1970, this time primarily at the request of one of the large Minnesota Iron Range mining companies. We then undertook a comprehensive market research study to determine if there was a need for this size crusher by the mining industry in general, rather than just the iron ore industry. We talked not only to the iron ore people but to the copper people and persons connected with the other metallic ores as well. The acceptability of this large crusher was also discussed with the aggregate industry. After interviews with many of the major mining companies, the decision was made to complete the entire engineering phase of the development program and to actively solicit a customer for this new crusher. We spent approximately $85,000 on engineering work and tests on the gamble that we could find a customer. I speak of a gamble because during our market research study we continually were told my company would be very interested in buying a 10 Ft. crusher, but only after we have seen one in operation.

The actual building and test of the first prototype unit without a firm commitment for a sale was an economic impossibility. We were now at the point where we needed to sell at least one unit in order to prove not only the mechanical reliability of the machine, but the economic justification for its purchase as well. Needless to say, when the order for two SYMONS 10 Ft. cone crushers was received, we felt we were now on the way toward completion of the development program.

Perhaps at this point it might be apropos to examine the crusher itself. It will stand 15-6 above its foundation, the overall height will be 19-4-. At its greatest diameter, in the area of the adjustment ring, it will be approximately 17-6. It will weigh approximately 550,000 lbs. Under normal crushing conditions, the crusher will be connected to a 700 HP motor. A 50 ton. overhead crane is required to perform routine maintenance on this crusher.

The main shaft assembly will weigh approximately 92,000 lbs. and the bowl assembly approximately 95,000 lbs. The mantle and bowl liner, cast from manganese steel, will weigh approximately 13,000 lbs. and 25,000 lbs. respectively.

The throughput capacity of the Standard will be approximately 1300 TPH at a 1 closed side setting and 3000 TPH at a 2- closed side setting. The throughput capacity of the SHORT HEAD will be approximately 800 TPH at closed side setting and 1450 TPH at a 9/16 closed side setting.

Persons familiar with the design of a conventional 7 Ft. SYMONS cone crusher will recognize that the design of the 10 Ft. is quite similar to it. As a matter of fact, we like to say that the design of the 10 Ft. is evolutionary rather than revolutionary, because all the reliable features of the SYMONS cone crusher were retained and the only changes that were made were those that added to the convenience of the operator, such as automatic clearing and automatic adjustment. From a mechanical point of view the stresses generated due to crushing loads are less in the 10 Ft. crusher than in the existing 7 Ft. Extra Heavy Duty cone.

One of our senior engineers who has long since retired told me that he had the occasion many years ago to make a presentation of a newly designed crusher to a prospective customer. He carefully prepared a rather detailed description of the crusher which included all the features that his new machine had when compared to the customers existing machine. The presentation itself took about one hour and after that period the customer leaned back in his chair and said, Thats all well and good, but will it crush rock? In effect, the customer was; saying that all the features in the world were of no use to him if the crusher did not perform its basic function to crush rock and ultimately make profits for the owner. Using todays financial terminology he was asking the engineer to economically cost justify the purchase of the crusher.

The working day of the contemporary manager or project engineer evolves around making decisions to economically justify a piece of equipment or a new operation. In our development program of the 10 Ft. cone crusher, we felt that the economic justification, from the customers point of view, was just as important to develop as the engineering aspects of the program. So we developed a three-part program to examine the economics of installing a 10 Ft. crusher. First we talked in wide generalities concerning the use of a 10 Ft. crusher. Secondly, we discussed the ramifications of using a 10 Ft. crusher versus 7 Ft. crushers in a completely new plant being considered for the future. Thirdly, we examined how a 10 Ft. crusher could be used to its best advantage in a plant that is being expanded.

The first consideration was the economic generalities of installing the crusher, or more specifically, what questions regarding the installation are pertinent to every crushing plant. Usually, the initial comparison which is made between a 7 Ft. crusher and a 10 Ft. crusher is that of price versus capacity. Theoretically, the capacity of a 10 Ft. crusher is 2 times that of a 7 Ft. while the selling price is approximately 3 times that of the 7 Ft. On that basis alone, it would appear that the 10 Ft. could not be justified. However, this is an incomplete picture. Recent cost estimates show that considerable savings are realized when the entire physical plant structure is considered. Because fewer machines are required to crush an equivalent amount of ore, the size of the buildings can be reduced, thereby decreasing the capital investment of buildings and allied equipment used as auxiliaries for the crusher.

Total manpower requirements to operate and maintain the plant is another of the generalities which were considered. Fewer crushers normally require less personnel to operate and perform maintenance, Manpower requirements obviously play a large part in the profitability of a plant. Therefore, it follows that using a 10 Ft. in place of multiple 7 Ft. units should be more profitable from the standpoint of manpower. We should, however, clarify one point regarding normal maintenance of the 10 Ft. crusher which is commonly misunderstood; namely, the periodic changeout of manganese liners in the crusher. The normal time period between manganese changes would not be significantly different between the 7 Ft. and a 10 Ft. because the wear rate, that is, the pounds of liner worn away per ton of ore crushed, will remain the same. Consequently, if a set of liners in a 7 Ft. crusher, lasted six weeks, a 10 Ft. crusher in the same operation would also last approximately six weeks. However, since the total amount of ore crushed will be greater, the maintenance costs per liner changeout will be less on the 10 Ft. crusher.

Another point for consideration is that the 10 Ft., cone crusher is a secondary crusher and normally would be fed with the product of a gyratory crusher. Since the 10 Ft. can accept a larger feed than a 7 Ft. crusher, it is possible to increase the open side setting of a gyratory crusher, thereby, allowing a greater volume of feed to pass through the crusher. Because of this, it is conceivable that a smaller primary crusher could be used in order to obtain a given quantity of ore.

A good salesman could expound on a multitude of ideas for using 10 Ft. crushers in place of 7 Ft. crushers in a new plant, but in the final analysis, the deciding factor as to whether or not the 10 Ft. crushers should be used will be the anticipated over-all plant capacity. Several studies have indicated that as a general rule of thumb the break even point for using 10 Ft. crushers in place of 7 Ft. crushers is a plant which will have an overall ore treatment capacity of approximately 40,000 TPD or approximately 8,000,000 TPY. Anything less than that figure should indicate the use of conventional 7 Ft. crushers. Obviously a small four stage crushing plant in which the third stage crusher was a 7 Ft. Standard and the fourth stage consisted of two 7 Ft. SHORT HEAD cone crushers, would not improve economically by the use of one 10 Ft. Standard cone crusher and one 10 Ft. SHORT HEAD cone crusher in place of the 7 Ft. crushers.

A study was made which considered a plant to be built using three different approaches of a conventional crushing-grinding operation. The plant which was being considered would be crushing taconite similar to that found in the Iron Range. The end product of the crushing was 5/8 rod mill feed and in this example the plant capacity was to be approximately 13.5 million TPY of ore processed to eventually produce approximately 4 million TPY of iron ore pellets. The study arbitrarily chose a four-year period of operation so that operating costs would be included and also because a four-year period is the usual comparison basis for calculating return on investment. In this example the primary crusher as well as the fine crushing plant would be operated fourteen shifts per week.

In our economic analysis of the 10 Ft. crusher development program, we also studied how this crusher could be used to best advantage when planning expansion of an existing plant. Before delving into the actual dollars and cents of several variations of expansion plans, several preliminary questions must be answered in the affirmative:

Since each plant is unique, the relative merits of the 10 Ft. crusher must be examined on an individual plant basis. Again, as a general rule of thumb, it has been found that the most benefit can be achieved in those plants which presently contain a four-stage crushing plant in which the first two stages of crushing are gyratory crushers. Studies have shown that converting the second stage gyratory crusher to a 10 Ft. Standard crusher shows most potential because the major auxiliaries required for the crusher, such as crane, conveyors, etc., are already large enough to accommodate the increased capacity of the 10 Ft.

As one possible solution, we suggested that the two 30 x 70 secondary gyratory crushers be replaced by two 10 Ft. Standard cones. These crushers could then send approximately 3600 TPH of minus 3 material to the fine crushing plant. The two existing 7 Ft. Standard crushers could be converted easily to SHORT HEAD crushers and two new 7 Ft. SHORT HEAD crushers added to the existing vacant foundations.

In Summary, we feel that the Symons cone crusher has a very definite place in the future of the mining industry and we intend to move steadily ahead with its progress. However, we have learned a few lessons along the way.

Initially, the development of these super size machines is an extremely expensive proposition. We know that if our company alone, attempted to completely design, manufacture, erect, and test a machine in this size range, it would severely tax our financial resources.

We found that super size equipment also presents some problems for our manufacturing facilities. The manufacture of one of these units puts a large dent into the production schedule of many of the smaller conventional units. In our enthusiasm to build a bigger newer machine, we continually remind ourselves that the smaller conventional units are still our bread and butter units.

On the positive side, we found that our reputation as a crusher manufacturer was enhanced because of what our customers refer to as progressive thinking. We listened to the suggestions of the mining industry in attempting to give them what they wanted.

Perhaps you will allow me to close with a bit of philosophizing from a manufacturers point of view. The 10 Ft. crusher is here ready to go into operation. Where do we go from here? A 15 Ft. cone crusher? A 20 Ft. cone crusher? Who knows? We do know that we have reached the financial limit of a development program on a machine of this size. We also know that as the size of a machine grows larger, the developmental and manufacturing risks grow larger along with it and any allowable margin for error must be minimized. We, like you, are in business to make a profit. Since larger crushers usually mean a fewer number of crushers, we must examine the profit picture from aspects of the sale. I think I speak for other manufacturers as well when I say that bigness in machines reflects bigness in development costs as well. If the mining industry wants still larger equipment in the future, the industry should prepare itself to contribute to the development program of those machines.

A multi-cylinderHydraulic Cone Crusher, theHydrocone Cone Crushercan be used in either the second or third stage of crushing by merely changing liners and adaptors.It can produce the full product range that the combination of a comparable sized Standard and Short Head can produce. It makes the machine much more versatile. It allows for much more standardization. The value of this feature is one where spare parts investment in the form of major assemblies is minimized.

All operator controls are conveniently mounted on a remote control console to eliminate the need for an operator to approach the crusher during operation.Over a period of years we have developed a unique engineering knowledge about the effects of cone crusher design parameters such as speed, throw and cavity design on crusher productivity.

Each Hydrocone Cone Crusher features dual function hydraulic cylinders that provide overload protection and a safe and fast way to clear a jammed cavity. Should the crusher become plugged, the operator merely pushes levers on the remote control console to clear the cavity.

It can produce the full product range that the combination of a comparable sized Standard and Short Head can produce. It makes the machine much more versatile. It allows for much more standardization. The value of this feature is one where spare parts investment in the form of major assemblies is minimized.

All operator controls are conveniently mounted on a remote control console to eliminate the need for an operator to approach the crusher during operation.Over a period of years we have developed a unique engineering knowledge about the effects of cone crusher design parameters such as speed, throw and cavity design on crusher productivity.

Each Hydrocone Cone Crusher features dual function hydraulic cylinders that provide overload protection and a safe and fast way to clear a jammed cavity. Should the crusher become plugged, the operator merely pushes levers on the remote control console to clear the cavity.

TheHydraulic Cone Crusheruses hydraulic tramp release cylinders and accumulators to hold the adjustment ring against the main frame seat. There is only one angular surface between the main frame and the adjustment ring which also has a radial contact point in the lowermost area. When a piece of tramp goes through the crusher, the oil is forced into the accumulators allowing the adjustment ring to raise and pass the tramp.

The tramp release cylinders are secured to the adjustment ring and the lower portion of the main frame through clevises. This allows the crushing forces to be transferred directly from the frame arm locations to the adjustment ring. This relieves the main frame shell and upper flange from carrying heavy loads.

The Hydraulic Cone Crusher is equipped with hydraulic clearing. The tramp release cylinders which hold the adjustment ring in place are double acting cylinders. These cylinders can be pressurized in the opposite direction, after the clamping pressure has been released, to raise the adjustment ring and bowl assembly for clearing; only the weight of the adjustment ring, clamp ring, and bowl assembly, plus any residual material in the bowl hopper raises.

cone crushers for sale

The cone crusherwas designed primarily with a view to achieving top performance in the field of fine-reduction crushing. It has also been adapted to what is designated simply as fine crushing, which extends into a range below that ordinarily defined by the term fine-reduction. Although the eccentric speeds of the various sizes of this type are not quite so high as the speeds used for the Newhouse crusher, the Hydro-cone crusher definitely rates as a high-speed machine, its product comparing quite closely to that of the former type, for equal close-side settings.Probably the outstanding feature of the. Hydrocone crusher is the hydraulic support, from which its name is derived and which is clearly shown in the sectional view. This device makes it possible to adjust the crusher to any desired setting within its range in a matter of seconds;adjustments may be made while the crusher is running, although the feed must be shut off before operating the adjusting pump. An accumulator in the hydraulic system provides protection against tramp iron or packing.

Cone crushers are used in AG and SAG grinding circuits to increase tonnage by effectively dealing with any pebble (critical size) build-up problem. Normally, heavy-duty short-head crushers are employed to crush pebbles. Power and crusher cavity level are the key variables for monitoring and controlling the crusher operation. Crusher product size is adjusted by changing the closed side setting.

On the left is a diagram of the Hydro-cone crushing chamber. A comparison of this chamber with those previously discussed is interesting. It will be noted that the choke-point has been raised far above the discharge level, in fact, to a point not far below the nip-point for the recommended maximum one-way feed dimension. By virtue of the decided flare of the head, and the corresponding flare of the top shell bore, the line-of-mean-diameters slopes sharply away from the crusher centerline. For some, distance above the discharge point the angle between head and concave is very acute; in fact, at the open-side position of the head, this zone is almost parallel. For recommended operating conditions, i.e., for safe combinations of throw and setting, and with screened feed, this type of crushing chamber does not approach anything like a choke or near-choke condition. For the combination shown in the diagram the ratio of volume reduction is almost 1:1 from zone 0-1 to zone 2-3 at the choke-point; consequently, if the crusher is given a screened feed (as all fine-reduction crushers should be) the reduction in voids by the time the choke-point is reached cannot very well reach serious proportions. The diagram shows the standard chamber. With screened feed, these crushers will operate at closed-side discharge settings equal to the throw of the head at the discharge point (usually spoken of as eccentric-throw.)

The level in the crusher feed pocket is an important variable since it can indicate whether the feed is building up. A build-up could lead to a plugin the feed chute, a spill through the skirting on the crusher feed, or a crusher plug. None of these are desirable.

In a normal feed situation, the level in the crusher cavity is kept fairly low, just enough to ensure that there is sufficient feed to keep the crusher working, but if the feed has to be suspended suddenly because of impending plugging, the crush-out wont take too long (10 seconds or less). Normal feed is usually used in standard crushers where the feed particle size is quite large, say greater than 65 mm.

Choke feed is when the crusher cavity is kept full, without spilling out through the skirting. Choke feeding is usually used in short-head crushers where the feed particle is smaller than that for a standard crusher.

This crusher is a modification of the standard machine, developed for fine-crushing duty. Mechanically, the machine is the same in every respect as the standard crusher of the same type, but for each developed size of machine a special top shell and the concave ring has been designed, with reduced receiving opening, reduced angularity between head and concave, and, consequently, superior characteristics at the finer settings. Medium crushing chambers may be operated at close-side settings of one-half the eccentric-throw, on screened feed; hence capacities at the finer settings are better than those of the standard type. Fine crushing chambers operate at one-fourth the eccentric throw. Inasmuch as the maximum feed size is smaller in the case of the fine chamber, the ratios of reduction are approximately the same for both machines.

There are two main types of cone crushers: standard and shorthead. They differ by the shape of the cavity. The standard crusher cavity is wider to accommodate larger feed-size material. The short head crusher is designed to crush finer material and to produce a finer product.

The closest approach between the mantle and the bowl liner is called the closed side setting. This is usually specified by the metallurgist to give the desired crusher product discharge size. It can be checked by running the crusher empty, hanging a lead plug into the crusher bowl, and then removing it to measure the gap. The gap is adjusted by rotating the bowl. Some crushers are equipped with a hydraulic jack mechanism on the crushing head assembly instead of having a bowl adjustment ring. The head can be raised or lowered to meet the operators needs. It can be very helpful in operation and process control.

The Symons Cone Crusher has come into almost universal use during the last few years for the final stage of crushing. It is a development of the secondary gyratory crusher, which is merely a small gyratory crusher designed to break the product of the primary machine down to about 1-in. size; but the main shaft of a cone crusher instead of being suspended from a spider is supported on a large socket bearing situated immediately under the crushing head and protected from grit and dust by a sealing assembly, this bearing taking the whole of the crushing load.

Fig. 8 gives a sectional view of the machine. The main shaft is carried in a long gear-driven eccentric, the rotation of which causes the gyration of the head in the usual way, but the center of gyration is at the apex of the crushing head instead of in the spider. At the top of the bowl, therefore, the lumps of ore entering the crushing zone are cracked by short powerful strokes; but at the bottom the head has a much longer but less powerful stroke, enabling the ore in the finishing stages to be rapidly crushed and quickly discharged without any tendency to choke, a condition which reduces over crushing to a minimum. This, together with the curved shape of the bowl, accounts for the large reduction ratio possible with this type of machine and makes it superior to other secondary crushers and coarse rolls.

It will be seen that the head and the bowl are parallel at the lower part of the crushing zone. The parallel space is deep enough, in conjunction with the speed of gyration, to ensure that no piece of ore can pass through it without being struck two or three times by the head before it falls clear. It follows that, unlike the jaw and gyratory crushers, the size of the product is determined by the distance apart of the bottom edges of the head and bowl in the position when they are closest together.

Coarse buttress threads on the outer circumference of the bowl fit into corresponding threads on the inner side of the adjusting ring, which is held down to the mainframe by a circle of long heavy springs, flexible enough to allow the whole assembly to rise should tramp iron or other uncrushable material enters the crushing zone. By means of a windlass and chain, the bowl can be rotated in the threads that support it in the adjusting ring while the machine is running, thus enabling the bowl liner to be adjusted for wear or the size of the product to be changed without stopping. The cone crusher is usually set to give a 3/8-in. or -in. product when discharging to ball mills.

Table 9 gives particulars of the different sizes of crushers. The capacity figures are based on material weighing 100 lb. per cubic foot and must be increased in direct proportions for heavier ores. It will be noted that each size of machine has two ranges of capacity; this is due to the fact that it can be fitted with a coarse or a fine crushing bowl according to the duty that is required of it. With either one, the range of reduction is greater than is economically possible with any other type of dry crushing machine.

A possible disadvantage of the cone crusher is that as a rule it cannot be choke-fed, but must be given an even feed of ore if it is to do efficient work. Should circumstances call for the installation of a machine that can be run if necessary with the ore piled up over the top of the head, a secondary gyratory crusher of the suspended shaft type will be required. The Traylor Reduction Crusher Type TZ, which is constructed on the principles of an ordinary gyratory crusher, but is fitted with a curved bowl liner similar to that of the Symons Cone Crusher, is designed to meet the case. Although the suspension of the shaft restricts the movement of the head to a smaller circle of gyration than that of the cone crusher, the ratio of reduction is still large enough to enable it to crush the product of the primary breaker to -in. size (-in. for the large machines), and it fulfills the condition that it can be choke-fed. Owing to the smaller movement of the head, however, the capacity for a given range is much less than that of the equivalent size of cone crusher, and the latter is therefore preferred when choke-feeding can be avoided.

The Symons Shorthead Cone Crusher, which is constructed on the same general principles as the larger machine, is designed to follow the latter, taking its product at 1-in. and reducing it to about -in. size. The strains imposed on the crushing members, however, would be very heavy if the machine were run with the discharge opening set to -in. or less. It is usual, therefore, to crush in closed circuit with a screen, the discharge opening of the bowl being set to 5/8 or in. Thus a circulating load is built up and a certain amount of choke-crushing takes place, but the method actually gives greater efficiency with a finer product than can be obtained in an open circuit, whatever the discharge setting of the bowl in the latter case.

In ordinary crushing practice, the grinding section is supplied with -in. or 3/8-in. material direct from Symons Cone Crushers. But the demand is for a finer feed and it seems likely that the Shorthead Cone Crusher will satisfy this demand to the exclusion of fine crushing rolls.

Symons Cone Crushers have been used extensively for secondary crushing in metallic, non-metallic, rock products, and industrial operations. The Symons Cone was developed to give large capacity, fine crushing. The combination of high speed and wide travel of the cone results in a series of rapid, hammer-like blows on the material as it passes through the crushing cavity and permits the free flow of material through the cavity.

Reduction in size of any particle, with each impact of the head, is regulated by the opening between the head and bowl at that point. A threaded arrangement of the bowl affords a quick and easy method for changing the size of the product or to compensate for wear. This adjustment can be made while the crusher is operating. A parallel zone between the lower portion of the crushing members assures uniform sizing.

Frame, adjustment ring, and cone are made of cast steel; gears are made of specially treated steel and have cut teeth; all bearings are bronze; mantle and bowl liners are manganese steel. The head and shaft can be removed as a unit, and other parts such as the eccentric and thrust bearings can easily be lifted out after the head is removed. The countershaft assembly can also be removed as a complete unit.

The circle of heavy coil springs, which holds the bowl and adjustment ring down firmly onto the frame, provides automatic protection against damage due to tramp iron. These springs compress, allowing the bowl to rise the full movement of the head until non-crushable material passes through. The springs then automatically return to their normal position.

Symons Cone Crushers are made in Standard and Short Head types. They are of the same general construction but differ in the shape of the crushing cavity. The Standard cone is used for intermediate crushing. The Short Head cone is used for finer crushing. It has a steeper angle of the head, a shorter crushing cavity, and greater movement of the head at the top of the crushing cavity.

If you observe the illustrations you will notice that the center line of the main shaft is at an angle to the center line of the crusher. The center of the main shaft bisects the center line of the crusher at the opening of the crushing chamber. As the MANTLE revolves that point is the pivot point of the mantle. This means that both the top and the bottom of the crusher mantle have a circular gyrating motion.

Tramp iron had long been a source of worry to those engaged in fine crushing.Here is what one operator had to say.Shutdowns were frequent, costs were uncertain because of enforced delays due to excessive breakage. Plugged machines had to be freed continually with a torch tocut out frozen and wedged-in tramp iron.The cone crusher overcame these troubles,helped reduce and stabilize costs. The bestevidence of this statement is the universalacceptance of the cone as the outstandingcrusher in its field.

While tramp iron is not recommended as a regular diet for a Cone Crusher, its construction is such that damage will not result should any ordinary noncrushable material get into the crushing cavity. The band of heavy coil springs encircling the frame allows the bowl to lift from its seat with each movement of the head until Such non-crushable object passes off into the discharge. The tramp iron shown in the accompanying illustration passed the protective devices installed for its removal and would have resulted in expensive repairs and long shutdown periods for any crusher except the Symons Cone.

Cone crushers can have two types of heads, standard and short head types. The principle difference between the two is in the shape (size and volume) of the crushing cavities and feed plate arrangements. Standard head cone crushers have cavities that are designed to take a primary crushed feed ranging up to 300mm generating product sizes around 20mm to 40mm. For finer products, short head cone crushers are normally used. They have a steeper angle of the head and a more parallel crushing cavity than the standard machines. Due to the more compact chamber volume and shorter working crushing length, the much needed higher crushing forces/power can be imparted to the smaller-sized material being fed to the crusher. Cavities for the short head machine are designed to produce a crushed product ranging from 5mm to 20mm in a closed circuit.

At the discharge end of the cone crusher is a parallel crushing section, where all material passing through must receive at least one impact. This ensures that all particles, which pass through the cone crusher, will have a maximum size, in at least one dimension, no larger than the set of the crusher. For this reason, the set of a cone crusher can be specified as the minimum discharge opening, being commonly known as the closed side setting (CSS).

Here are facts about the conecrusher known as Hydrocone. This line of hydraulically adjusted gyratory crushers was developed in smaller sizes some fifteen years ago by Allis-Chalmers to meet a demand for improved secondary or tertiary crushing units. The line is now expanded to include sizes up to 84-in. diameter cones.

This modern crusher is the result of many years of experience in building all types of crushing equipment, when the first gyratory or cone crusher, the Gates, was put into operation. Overall these years AC has followed a continuing policy of improvement in crusher engineering, changes in design being based on operating experience of crushers in actual operation.

The Hydrocone cone crusher is the logical outgrowth, a crusher having a means of rapidly changing product size or compensating for wear on the crushing surfaces a crusher which produces a better, more cubical product than any comparable crusher and a crusher so designed that it can be operated and maintained with a minimum of expense.

The most important fact about the Hydrocone crusher is its hydraulic principle of operation. Hydraulic control makes possible quick, accurate product size adjustments fast unloading of the crushing chamber in case of power failure or other emergency protection against tramp iron or other uncrushable materials in the crushing chamber. Another important fact about this crusher is its simplicity of design and operation. The accompanying sketch shows the simplicity of the Hydrocone crushers principle of operation. The main shaft assembly, including the crushing cone, is supported on a hydraulic jack. When oil is pumped into or out of the jack the mainshaft assembly is raised or lowered, changing the crusher setting.

Since the crushing cone is supported on a hydraulic jack, its position with respect to the concave ring, and therefore the crusher setting, can be controlled by the amount of oil in the hydraulic jack.

Speed-Set control raises or lowers the crushing shaft assembly hydraulically, and permits quick adjustment to produce precise product specifications without stopping the crusher. Speed-Set control also provides a convenient way to compensate for wear on crushing surfaces.

On Hydrocone crushers in sizes up to 48-in., the Speed-Set device is a hand-driven gear pump; on the larger sizes a motor-driven gear pump operated by push-button. On all sizes the setting can be changed in a matter of minutes by one man without additional equipment, reducing downtime materially.

Protection against tramp iron or other uncrushable materials is afforded by an accumulator in the hydraulic system. This consists of a neoprene rubber oil-resistant bladder inside a steel shell. This bladder is inflated with nitrogen to a predetermined pressure higher than the average pressures encountered during normal crushing.

Ordinarily, the Automatic Reset remains inoperative, but if steel or some other foreign material should enter the crushing chamber, the oil pressure in the hydraulic jack will exceed the gas pressure in the accumulator. The bladder will then compress, allowing the oil to enter the steel shell. This permits the crushing cone to lower and discharge the uncrushable material without damage to the crusher.

After the crushing chamber is freed of the foreign material, the gas pressure in the accumulator will again exceed the oil pressure in the hydraulic system. Oil is then expelled from the accumulator shell and the crushing cone is returned to its original operating setting automatically.

A Hydrocone crusher will produce a cubical product with excellent size distribution and a minimum of flats and slivers. This is especially important in the crushed stone industry where a cubical stone is required to meet rigid product specifications. It is also of considerable significance in the mining industry where the elimination of large amounts of tramp oversize reduces circulating loads or makes open circuit crushing possible.

The reason why the Hydrocone crusher will produce such a uniform, cubical product is that it has a small eccentric throw with respect to the crusher setting. This means a smaller effective ratio of reduction during each crushing stroke, and therefore, the production of fewer fines and slivers. Likewise, a small eccentric throw means a small open side setting, which results in a smaller top size of the product. A large percentage of the product from a Hydrocone crusher will be of a size equal to or finer than the close side setting.

For fine crushing, or in installations where the feed to the crusher is irregular, the use of a wobble plate feeder is recommended. This feeder is installed in place of the spider cap and affords a means of controlling the feed to the crusher, as well as a means of distributing the feed evenly around the crushing chamber.

Essentially, the feeder consists of a plate that is oscillated by a shaft extending down into the crushers main shaft. The motion of the main shaft oscillates or wobbles the feeder plate. The plate is supported on a rubber mounting which permits its motion and, at the same time, positively seals the top of the spider bearing against the entry of dust. Maintenance is reduced by the use of self-lubricating bushings between the feeder plate shaft and the crusher main shaft.

Hydrocone crushers are mounted on rubber machinery mountings in order to reduce installation costs and make it possible to locate these machines on the upper floors of crushing plants. These mountings operate without maintenance, absorb the gyrating motion of the crusher, thereby eliminating the need for massive foundations. Rubber mountings also prolong the life of the eccentric bearing, since this bearing is not subjected to the severe pounding encountered when rigid mountings are used.

The exclusion of dust and dirt from the internal mechanism of the crusher is of extreme importance from a maintenance standpoint. To accomplish this, Hydrocone crushers are equipped with one of the most effective dust seals yet devised.

This seal consists of a self-lubricating, graphite impregnated plastic ring which is supported from the head center in such a way that it is free to rotate, or gyrate, independently of the head center.

The plastic ring surrounds the dust collar with only a very slight clearance between the two parts. With the plastic ring being free to move as it is, it accommodates the rotation, gyration, and vertical movement of the main shaft assembly, maintaining the seal around the dust collar at all times. Because of its lightweight and self-lubricating characteristics, wear on the plastic ring is negligible.

The ease with which any wearing part can be replaced is of the utmost importance to any crusher operator. With this in mind, the Hydrocone crusher has been designed so that any part can be replaced by disturbing only a minimum number of other parts.

For example, the Mantalloy crushing surfaces are exposed by simply removing the top shell from the crusher. This can be done easily by removing the nuts from the studs at the top and bottom shell joint. The eccentric and hydraulic support mechanisms are serviced from underneath the crusher without disturbing any of the feeding arrangements, or the upper part of the crusher.

Efficient lubrication of all wearing parts is one of the reasons why crushing costs are low with the Hydrocone crusher. On most sizes, lubrication is divided into three distinct systems, each functioning independently.

This bearing, whether of the ball and socket type as on the smaller sizes, or of the hourglass design (as shown) found on the larger Hydrocone crushers, is pool lubricated. On the 51, 60 and 84-inch sizes, provision is made for introducing the lubricant from outside the top shell through the spider arm. On the smaller crushers, oil is introduced through an oil inlet in the spider cap. On all sizes, oil is retained in the bearing by a garter-type oil seal located in the base of the spider bearing.

All Hydrocone crushers are provided with a compact external lubrication system consisting of an oil storage tank, an independently motor-driven oil pump, a pressure-type oil filter, and a condenser-type cooler.

Cool, clean oil is pumped into the crusher from the conditioning tank, lubricating first the three-piece step bearing assembly. The oil then travels up the inner surface of the eccentric, lubricating the eccentric bearing and main shaft.

At the top of the eccentric, the oil is split into two paths. Part of the oil flow passes through ports in the eccentric and down its outer surface, lubricating the bronze bottom shell bushing, driving gears and wearing ring. On the 48-in. and smaller crushers, the balance of the oil overflows the eccentric and returns over the gears to the bottom of the crusher where it flows by gravity back into the conditioning tank. On the 51-in. and larger Hydrocone crushers, any oil which overflows the top of the eccentric is returned directly to the conditioning system without coming into contact with the gears.

On all but the 36 and 48-in. Hydrocone crushers, the countershaft bearings are of the anti-friction type with separate pool lubrication. Both ends of the countershaft bearing housing are sealed by garter spring-type oil seals to prevent dirt or other contaminants from entering the system.

Rather than use one eccentric throw under all operating conditions, Hydrocone crushers are designed to operate most efficiently with a predetermined ratio of eccentric throw to the crusher setting. By operating with an eccentric throw specifically selected for a given application, the most desirable crushing conditions are attained the most economical use of Mantalloy crushing surfaces reduced crusher maintenance a more cubical product.

The eccentric throw is controlled by a replaceable bronze sleeve in the cast steel eccentric. This sleeve, being a wearing part, can be renewed readily in the field. Also, should operating conditions change, the throw or motion of the crushing head can be changed accordingly.

Because of the large choice of eccentric throws available and the variety of crushing chambers that may be obtained a Hydrocone crusher may be selected that will fulfill the requirements of almost any secondary or tertiary crushing operation.

They may be used in the crushed stone industries to produce a premium cubical product in the mining industries to produce a grinding mill feed having a minimum of oversize, thereby reducing circulating loads and making open circuit crushing possible. The Hydrocone crusher is used in the cement industry to reduce cement clinker prior to finish grinding.

One of three general types of crushing chambers can be furnished for any size Hydrocone crusher to suit your specific needs. The selection of the proper chamber for a given application is dependent upon the feed size, the tonnage to be handled and the product desired. A crusher already in use can be readily converted to meet changing requirements, making this machine highly flexible in operation.

The Coarse crushing chamber affords the maximum feed opening for a given size crusher. Crushers fitted with a Coarse chamber can be choke fed, provided that product size material in the feed is removed.

The Coarse chamber has a relatively short parallel zone and is designed to be operated at a close side setting equal to or greater than the eccentric throw. For example, a crusher with a 3/8-in. the eccentric throw should be operated at a 3/8-in. (or more) close side setting, and therefore a -in. open side setting. Optimum capacity and product will result when operated under these conditions, as well as most economical wear on the mantalloy crushing surfaces.

One way dimension (slot size) of the feed to a crusher fitted with a Coarse chamber should not exceed two-thirds to 70 percent of the feed opening. The maximum feed size to an 848 Hydrocone crusher would therefore be about 5-in. one way dimension.

The use of a wobble plate feeder, furnished as optional equipment, is recommended if the feed size is relatively large, if the crusher is to be operated in closed circuit, or if the feed to the crusher is irregular.

If the Hydrocone crusher is operated with a Coarse crushing chamber, the product will average about 60% passing a square mesh testing sieve equal to the close side setting of the crusher. On certain materials which break very slabby, this percentage will be somewhat lower, and on cubically breaking material the percentage will be somewhat higher. As an average, approximately 90% of the product will pass a square mesh testing sieve corresponding to the open side setting, although this percentage frequently runs higher.

The Intermediate crushing chamber has a feed opening somewhat less than a coarse crushing chamber, but because of its longer parallel zone, is designed to be operated at a close side setting equal to or greater than half the eccentric throw. For example, with a -in. eccentric throw, the minimum close side setting would be 3/8-in.

Crushers fitted with this type of chamber can be choke fed, provided that product size material in the feed be removed ahead of the crusher. The one-way dimension or slot size of the feed to a crusher should not exceed approximately half the receiving opening. A 436 Hydrocone crusher with a 5/8-in. the eccentric throw could be operated at 5/16-in. close side setting and feed size should not exceed 2-in. one-way dimension.

The wobble plate feeder, although not required under most circumstances, is recommended if the feed is irregular, or if the crusher is operated as a re-crusher, at a relatively close setting, or in a closed circuit.

Because of the longer parallel zone in this crushing chamber, a somewhat greater percentage of the product will pass a square mesh testing sieve equal to the close side setting. This will usually average about 65 to 70%, with this percentage varying, depending on the material being crushed. Very frequently, 100% of the product will pass a square mesh testing sieve equal to the open side setting of the crusher.

The Fine crushing chamber has the longest parallel zone and therefore the smallest feed opening for any given size crusher. It can be operated at ratios of eccentric throw to close side setting of up to 4 to 1. With a -in. throw, for example, a 236 Hydro-cone crusher could be operated at 3/16-in. on the close side.

Because of their design, crushers with Fine crushing chambers cannot be choke fed but must be equipped with the wobble plate feeder. The maximum one-way dimension of the feed approaches the crusher feed opening. A 348 Hydrocone crusher can be fed with material up to 3-in. one-way dimension.

The Fine crushing chamber will give the highest percentage passing the close side setting of any of the chambers discussed here. The product will average approximately 75% passing a square mesh testing sieve equal to the close side setting. Because of the long parallel zone, the top size of the product will be only slightly larger than the close side setting of the crusher.

In addition to the three general types of crushing chambers described here, special chambers can be designed to meet varying operating requirements, giving the crusher even greater flexibility than can be obtained with these three main types.

For example, a special concave ring can be used in a 636 Hydro-cone crusher which will reduce the feed opening to 5 inches and permits a two to one ratio of eccentric throw to close side setting. Thus, the crusher can be furnished to fit the exact requirements of any application.

The following capacity table gives a complete range of all Hydrocone cone crusher capacities with varying crushing chambers and eccentric throws. This table shows the minimum recommended setting for any given eccentric throw, the recommended maximum one-way (slot size) dimension of the feed, and the maximum recommended horsepower for any eccentric throw.

Capacities given are based on crushing dry feed from which the product size material has been removed. The material must readily enter the feed opening and be evenly distributed around the crushing chamber. The table is based on material weighing 100 lb per cubic foot crushed. Any variation from this must be accounted for.

The curves on the following page can be used to approximate the screen analysis of the product from any given Hydrocone crusher. These curves are only approximations since the actual screen analysis of the product of a Hydrocone crusher will depend upon the nature of the material being crushed, the feed size and a number of other considerations which could not be taken into account in these curves. Within these limits, the curves should give fairly accurate estimates.

Note that the Coarse crushing chamber is represented as giving a product of which 60 percent will pass the close side setting, the Intermediate chamber 67 percent and the Fine chamber 75 percent passing the close side setting. These percentages are the averages of a large number of tests and some variations from these must be expected. If material breaks slabby the percentage with a coarse crushing chamber may be as low as 50 percent; if it breaks very cubically it might be as high as 70 percent, or even higher.

These curves have been prepared so that they can be used for any crushing chamber. To estimate the product of any Hydrocone crusher, it is necessary to know the type of crushing chamber used (Coarse, Intermediate or Fine), the close side setting and the eccentric throw.

If the crusher is a 636 Hydrocone crusher with a 3/8-in. throw and a 3/8-in. close side setting, the approximate screen analysis would be the curve that would pass through the 3/8-in. horizontal line and the vertical line representing the close side setting for the Coarse crushing chamber, which is the 60 percent passing line. If no curve passes through the precise point of intersection between the horizontal and vertical lines, an approximate curve can be sketched in which parallels the other curves. The same procedure can be used for approximating the products from any other crushing chamber.

Barite..170 Basalt.100 Cement Clinker.95 Coal..40-60 Coke.23-32 Glass..95 Granite100 Gravel.100 Gypsum..85 Iron Ore.125-150 Limestone..95-100 Magnesite.100 Perlite..95 Porphyry.100 Quartz..95 Sandstone..85 Slag..80 Taconite125 Talc..95 Trap Rock100

We canprovide testing to solve the most difficult crushing problems. Laboratory equipment makes it possible to measure the crushing strengths and characteristics of rock or ore samples accurately, and this data is used in the selection of a crusher of proper size and type.

Impact and batch tests are frequently sufficient to indicate the type and size crusher that will be the most economical for a particular application. However, batch testing is often followed by pilot plant tests to provide additional information about large-scale operations, or to observe rock or ore reduction under actual plant operating conditions.

Pilot plant tests duplicate a continuous crushing operation provide a practical demonstration of the commercial potential of the process on a pilot scale. Such tests are useful because they may disclose factors that affect the full-scale operation, favorably or otherwise, but which remain hidden in tests on limited samples.

All Laboratory tests are guided by modern scientific knowledge of crushing fundamentals and by ourinvaluable backlog of experience in engineering and building all types of crushing equipment for any crushing application.

In addition to the facilities for crushing tests, the Laboratory maintains complete batch and pilot mill facilities for use in investigating an entire process. Tests in grinding, sizing, concentrating, thickening, filtering, drying, and pyro- processing can be made.

cone crushers | mclanahan

A Cone Crusher is a compression type of machine that reduces material by squeezing or compressing the feed material between a moving piece of steel and a stationary piece of steel. Final sizing and reduction is determined by the closed side setting or the gap between the two crushing members at the lowest point. As the wedge or eccentric rotates to cause the compression within the chamber, the material gets smaller as it moves down through the wear liner as the opening in the cavity gets tighter. The crushed material is discharged at the bottom of the machine after they pass through the cavity.

A Cone Crusher will deliver a 4:1 to 6:1 reduction ratio. As we set the closed side setting tighter to create a finer output, we also reduce the volume or throughput capacity of the machine. Generally speaking, multiplying the closed side setting by two is a good guide to the top size of the gradation exiting the machine.

The technology that makes a MSP Cone Crusher outperform competitive cones on the market is the combination of all of the factors of performance i.e. balanced eccentric, higher speeds, fulcrum point position, and stroke. By using sound engineering with years of field testing a truly tried and tested new Cone Crusher has emerged.

A balanced eccentric coupled with a fulcrum point ideally placed over the crushing chamber yields highly effective compression crushing. This allows higher eccentric speeds to maximize performance without disruptive forces. The eccentric stroke is designed to work with the eccentric speed and fulcrum position to produce higher yields and minimize recirculating loads. The torque and resultant crushing forces are as effective as virtually any Cone Crusher on the market.

Spiral bevel gears provide the turning force to the eccentric. The spiral gear is mounted on a sturdy countershaft of the Cone Crusher, which rides in bronze bushings. The gears are precision cut for quiet operation. Misalignment problems are eliminated.

The MSP Cone Crusher features one of the largest volume displacements by a crusher head. When there is a large volume of material displaced this way, it means that more material is crushed in each cycle, more material can be fed to fill the larger void left when the crushing head recedes, and more material flows through the crusher due to the larger throughput and gyrating cycles allowing material to drop further. The benefits of high efficiency, greater crushing force and high capacity coupled with the durability the market expects are the reasons why this design is the best way to increase your productivity and profitability.

Sleeve bearings make removal and installation of the MSP Cone Crusher head and main shaft simple. The tapered main shaft fits into a large opening at the upper end of the tapered eccentric bushing. The shaft does not require precise alignment. It can be inserted from a vertical position and will self-align.

With the MSP Cone Crushers automatic hydraulic overload relief system, the crusher immediately opens in the event of an overload. This action reduces the crushing pressure, allowing the obstruction to pass through the chamber. After the chamber has been cleared, the hydraulic control system automatically returns the crusher to its original setting. Shock loads on the crusher are reduced for longer component life.

MSP Cone Crushers are built to make your operations run more smoothly and easily. Its simple and easy to read control panel provides you with the necessary information to properly run your crusher. For example, the MSP Cone Crusher shows you the exact cone setting to allow the operator to stay on top of a critical set point.

To enhance your Cone Crusher's life and maintain optimal crushing capacities, an automatic liner change reminder is included for your convenience. When the new mantle and liners are installed, the automated reminder is reset. As the crusher operates, the system will track production capacities and calculate the liner wear rate. When the cone liners reach the maximum wear point, it sends a flashing reminder to 'change cone' on the cone setting meter. After the wear parts are changed, simply reset the automated reminder system and continue efficient, reliable crushing.

The MSP Cone Crushers are built heavier than most competitive Cone Crushers. The extra weight means lower stress on the machine, which results in longer operational life. There is no question that the proper use of mass makes for more durable crushers. Additionally, a broad array of manganese liners is offered for each size MSP Cone. A unique and patented feature allows the Liners to fit without the use of any backing material. Improved Chamber matching with crusher feeds virtually eliminates any trial and error.

All these factors combine to give producers more effective compression crushing. This reduces liner wear, which reduces wear cost and allows higher yields, resulting in decreased overall cost per ton of finished product.

In the Symons principle, which is utilized by the MSP Cone Crusher, each cycle is timed so that the feed material and the upward thrust of the crushing head meet at the moment of maximum impact. The optimum speed of gyration and the large eccentric throw produce two important results: 1) the rapidly closing head catches the falling feed material and delivers the extremely high crushing force and 2) on the other side of the chamber the rapidly receding head allows material to fall freely to the next point of impact or exit the chamber. The combination of superior crushing force and free flow of material in the MSP Cone Crusher results in production levels that are unsurpassed and means lower power consumption per ton.

Ten years of testing went into the final combination of speed, stroke, and head angle to deliver the most efficient use of power. Greater efficiency delivers lower power consumption, reduced cost per ton, less maintenance and higher profits.

The power input imparted by the driven eccentric results in a bearing force in opposition to the crushing force at a point on the lower portion of the main shaft. The bearing force as it is transmitted to the main shaft provides the required moment to crush the rock. The distance between the bearing force and the fulcrum point is called the force arm. The longer the force arm, the greater the momentum, which produces a greater crushing force.

Crushing loads are distributed over a large spherical bearing. The socket liner keeps full contact with the crushing head ball and carries all of the vertical component and part of the horizontal. The long force arm, represented by the main shaft, reduces the load transmitted through the eccentric bushing.

Capacities and product gradations produced by Cone Crushers are affected by the method of feeding, characteristics of the material fed, speed of the machine, power applied, and other factors. Hardness, compressive strength, mineral content, grain structure, plasticity, size and shape of feed particles, moisture content, and other characteristics of the material also affect production capacities and gradations. Gradations and capacities are most often based on a typical, well-graded choke feed to the crusher. Well-graded feed is considered to be 90% to 100% passing the closed side feed opening, 40% to 60% passing the midpoint of the crushing chamber on the closed side (average of the closed side feed opening and closed side setting), and 0 to 10% passing the closed side setting. Choke feed is considered to be material located 360 degrees around the crushing head and approximately 6 above the mantle nut. Maximum feed size is the average of the open side feed opening and closed side feed opening.

Minimum closed side setting may vary depending on crushing conditions, the compressive strength of the material being crushed, and stage of reduction. The actual minimum closed side setting is that setting just before the bowl assembly lifts minutely against the factory recommended pressurized hydraulicrelief system.

Overall, industry acceptance of the Symons principle and performance, the McLanahan Cone Crusher works to deliver lower recirculating loads at higher tonnage rates with lower maintenance costs by combining:

A general rule of thumb for applying Cone Crushers is the reduction ratio. A crusher with coarse style liners would typically have a 6:1 reduction ratio. Thus, with a 34 closed side setting, the maximum feed would be 6 x 34 or 4.5 inches. Reduction ratios of 8:1 may be possible in certain coarse crushing applications. Fine liner configurations typically have reduction ratios of 4:1 to 6:1.

The difference between the volume displaced by the crushing head when it is fully closed and fully open is called the displacement volume. A large displacement volume results in greater capacity because:

In order to maintain the maximum levels of capacity, gradation, and cubical product, a Cone Crusher must be choke-fed at all times. The best way to keep a choke-feed to the ConeCrusher is with a surge bin (or hopper) and feeder that are located prior to the crusher. Choke-feeding is almost impossible to achieve without a hopper and feeder.

There are a number of different criteria to consider when selecting the right chambers for your crushing needs. However, the one that must always be considered isthat you have a well-graded feed to the chamber. A well-graded feed is generally thought to be 90 to 100% passing the closed-side feed opening, 40 to 60% passing the midpoint, and 0 to 10% passing the closed-side setting.

One thing you should never do is place a new concave liner in a crusher with a worn mantleor place a new mantle in a crusher with a concave liner. Why? If you have properly selected the replacement component, you will change the complete profile of the Cone Crusher by mating new and worn components. The receiving opening will tend to close down, restricting the feed from entering the chamber and causing a reduction in tons per hour.

If the liner is wearing evenly throughout the chamber, you should consider changing out the manganese when it has worn down to about 1" (2.5 cm) thick at the bottom. At about 3/4" to 5/8" (1.9 to 1.6 cm) thick, the manganese will crack, causing the backing material to begin to disintegrate. This, in turn, will cause the liners to break loose. If this should happen, continued operation could destroy the seat on the support bowl or the head of the Cone Crusher.

McLanahan Symons Principle (MSP) Cone Crushers utilize a combination of improved factors of performance, which are enhanced by the Symons Principle of crushing, as well as the latest hydraulic features and electrical features that create a modern, efficient, reliable and durable Cone Crusher that ultimately leads to a faster ROI. MSP Cone Crushers are designed to make your operation run more smoothly and easily, as well as ensuring lower operating costs and minimal downtime so that MSP Cone Crushers are more frequently fully operational and processing optimal amounts of material.

Efficiency can be defined by the ratio of the work done by a machine to the energy supplied to it. To apply what this means to your crusher, in your reduction process you are producing exactly the sizes your market is demanding. In the past, quarries produced a range of single-size aggregate products up to 40 mm in size. However, the trend for highly specified aggregate has meant that products have become increasingly finer. Currently, many quarries do not produce significant quantities of aggregate coarser than 20 mm; it is not unusual for material coarser than 10 mm to be stockpiled for further crushing.

nordberg hp4 cone crusher - metso outotec

Nordberg HP4 cone crusher is one of the latest models in the new generation of Nordberg HP Series cone crushers family. It has proven to be productive in both aggregates production and mining operations. Nordberg HP4 cone crusher is often utilized in the second, third or fourth stage of the crushing process.

Designed for your needs, the new generation Nordberg HP4 cone crusher is safe and easy to maintain. Guard protection, a new liner attachment and the lack of backing material are some of the features that reduce maintenance downtime. Furthermore, power consumption is up to 20% lower than with other cone crushers.

Nordberg HP4 cone crusher features a unique combination of crusher speed, throw, crushing forces and cavity design. This combination is renowned for providing higher capacity and superior end-product quality.

Increasing the stroke, the power and the retaining force while improving crusher body design and weight to withstand the force are principles of kinematics. A higher density in the crushing chamber improves the inter-particle crushing action, resulting in superior product shape, high reduction ratio and high capacity.

In a size-class comparison, Nordberg HP4 cone crusher has a higher output capacity, higher density in the crushing chamber and better reduction ratio, producing higher on-spec yield end products with the same energy consumption. Nordberg HP4 cone crusher is equipped with the latest high-efficiency motors, making it efficient and ecological crushing machine.

Nordberg HP4 cone crusher produces finer products by limiting crushing stages, which lowers your investment cost and saves energy. This is achieved through a combination of optimized speed, large throw, crushing chamber design and increased crushing force. The efficient crushing action of Nordberg HP4 cone crusher gives it the best power utilization per cone diameter.

Designed for your needs, Nordberg HP4 cone crusher is safe and easy to maintain. Fast and easy access to all the main components from the top, dual-acting hydraulic cylinders, and no backing material significantly reduce downtime and are more environmentally friendly.

Because we are working in potentially hazardous environments, Nordberg HP4 cone crusher is engineered to ensure maximum operator safety and easy maintenance. Accessibility from the top of the crusher to the principal components, easy access for liner maintenance, mechanical rotation of the bowl for removal with a simple press of a button, and no backing compound on liners, make Nordberg HP4 cone crusher safe to use and maintain.

Nordberg HP4 cone crusher delivers less downtime and increased operator confidence. Dual-acting hydraulic tramp-release cylinders are used to let the crusher pass tramp iron and to provide a large clearing stroke if needed. The double accumulator combination provides better reactivity of the hydraulic system.

With Metso IC70C you can control maintenance, setting modifications, production follow-up and data extraction. All parameters can be adapted to your plant characteristics, and you can easily do all this close to the crusher or remotely from the control room.

You set the goals and Metso IC70C helps you reach them. It allows you to monitor the feeding, change the settings automatically depending on the load or liners wear, and select the product size distribution according to your preference of coarse or fine aggregate production.

hydraulic cone crusher, cone crusher parts,cone rock crusher

Overview Hydraulic cone crusher is suitable for crushing all sorts of ores and rocks whick is medium or above medium hardness. Compare with jaw crusher, cone crusher is high efficiency, easy adjustment, economic operation and has stable structure, etc.It is widely used in metallurgical industry, hydro-dam construction, transportation, chemical industry and building materials.

Advantages of Hydraulic Cone Crusher: 1. High crushing ratio and production efficiency The high turning speed and stroke of a hydraulic cone crusher generates greater power and this helps the machine to pass the material at an excellent speed. So eventually it delivers a high production and crushing rate. 2. High quality product shape output A hydraulic cone crusher uses the method of pressuring two surface layers to crush objects and has adjustable turning speed. A hydraulic cone crusher can selectively smash objects while crushing and this can help increasing the quality output of fine objects and cubic shaped objects as wishes. 3. Automatic discharging The bidirectional metal releasing part of a hydraulic cone crusher automatically adjusts and discharges the bulk while crushing. So there is no need to halt the crushing process and clean the objects manually. 4. Thin oil lubrication system The thin oil lubrication system of a hydraulic cone crusher plays a very important role in increasing the life of a crusher. This further helps in making the production process cost efficient.

Working Principles of Hydraulic Cone Crusher The crushing principle of hydraulic cone crusher machine is finished between fixed cone plate and movable cone plate. The motor drives the horizontal axis of the crusher machine through triangle belt and pulley, the horizontal axis drive the eccentric shaft bush to rotate through gear transmission. The eccentric shaft drives the main shaft to make the movable cone plate swing at a regulated track from time to time, the materials are crushed due to constant pressed and crooked in the crushing cavity. The finished products are discharged from the discharging opening.

how to choose the cone crusher correctly | hxjq

Cone crusher is one of the widely used mining machinery and equipment. With the development of the market, there are many types of cone crushers at home and abroad which have various performances. Therefore, how to correctly select the models has become one of the most concerned issues for users. And at the following introduction, we will take the three mainstream cone crushers on the market as examples to help users choose the most suitable machine by analyzing their structural characteristics, advantages and disadvantages.

Symons cone crusher is the earliest cone crusher, as well as the most widely used crusher in the world. Based on the introduction and absorption of foreign technology and according to the customer's needs, it has been developed into a modern and high-performance cone crusher integrated with high swing frequency, optimized cavity and reasonable stroke by adopting the principle of laminating crushing and the concept of more crushing and less grinding. After the optimization and improvement of the experts, Symons cone crusher has a more reasonable structure and advanced technology, and performs excellently in manufacturing, installation, use and maintenance.

It can be widely used in metal and non-metal mines, cement plants, building construction, sand making and metallurgy, etc. It is also suitable for iron ore, non-ferrous metal ore, granite, limestone, quartzite, sandstone, pebbles, etc.

However, since the Symons cone crusher crushes by reducing the size of the discharge port to control the particle size of the product, the machine is not suitable for use as ultrafine crusher or sand making.

Many types of crushing chambers: According to the site conditions, the user can choose three different chambers which have high crushing efficiency, uniform product size, well-shaped granule, uniformly worn concave and wear parts with long service life.

Support for large crushing ratios: Key parts are manufactured by special material. The space when the crushing cone leaves the concave is large in each stroke, allowing more material to enter the crushing chamber and forming a larger discharge volume, which speeds up the passage of the material through the crushing chamber.

High efficiency: The main shaft of the machine has support at both upper and lower ends, which can withstand greater crushing force and larger stroke. In addition, it has a special crushing cavity shape suitable for the lamination principle, which makes the machine have higher crushing efficiency.

Low maintenance cost for daily operation: Because of reasonable part selection and structural design, long service life of parts and long crushing arm length, load on sliding bearings, gears and frames have been reduced greatly; uniform particle size of crushed products reduces cyclic load; hydraulic clearing system is easy to operate and control, reducing downtime and power consumption.

Lubrication circulation system: Special light oil lubrication circulation system ensures that the oil return temperature is within60; the new oil filtration system ensures that the transmission device is not accidentally worn, thus stabilizing the service life. This advanced and reliable double pump oil supply lubrication system ensures the temperature rise of the main shaft and copper tile, long service life, reliable operation and extended maintenance period.

The single-cylinder hydraulic cone crusher is developed with the world's advanced crushing technology, integrating mechanical, hydraulic, electrical and intelligent technologies. The new crushing structure, optimized laminated crushing chamber and fully automatic control system make the single-cylinder hydraulic cone crusher special with the performance characteristics that traditional cone crusher does not have.

However, the crushing force of the single-cylinder hydraulic cone is slightly insufficient, especially for crushing hard materials. Because the adjustment method is to lift and lower movable cone, the wear and tear of concave is not uniform under the condition of uneven feeding. Besides, the oil cylinder is at the bottom, leaving small space for lower parts, which brings certain difficulties to maintain.

More uniform grain size: The single-cylinder hydraulic cone crusher adopts the unique crushing cavity shape and laminating crushing principle, so that the proportion of cubes in the finished product is obviously increased, the needle-like stones are reduced, and the grain size is more uniform;

Large production capacity: The high swing frequency and large inclination of steep slope design make the throughput of the single-cylinder hydraulic cone crusher 40% larger than the ordinary cone. In addition, the feed port of the machine is also larger than the ordinary cone. So it will be destined to have a higher production capacity than the general ones;

High degree of automation: Compared with the old version of the spring cone crusher, the new single-cylinder hydraulic cone crusher can automatically adjust the size of the discharge port without stopping the machine, and can also be equipped with a computer control system for remote operation;

The multi-cylinder hydraulic cone crusher is suitable for crushing various ores and rocks of medium and or above hardness, such as limestone, iron ore, pebbles, non-ferrous metal ore, granite, basalt, limestone, quartzite and sandstone.

Its high speed, high crushing capacity and unique patented design make the finished product with an extremely high-quality cube shape, and the easy maintenance features ensure extraordinary high stability operation. It is a new generation of products that replaces spring cone crushers and newer general hydraulic cone crushers.

Its high speed, high crushing capacity and unique patented design make the finished product with an extremely high-quality cube shape, and the easy maintenance features ensure extraordinary high stability operation. It is a new generation of products that replaces spring cone crushers and newer general hydraulic cone crushers.

However, since the multi-cylinder cone crusher has small a R radius of the spherical surface, so the radius of the swing is small, causing unstable phenomena such as swaying, tipping, and flying of the moving cone, as well as problems such as poor contact between the main shaft and the bushing, and large impact force, which affects the normal work of the machine. But its processing capacity is higher, and the material smaller than the discharge port can even account for 70%~80% of the total volume.

Hydraulic motor adjusts the discharge port: The whole hydraulic operation is adopted from the insurance clearing chamber to the adjustment and locking, and hydraulic lubrication combined oil station is small in size and simple to wire.

Fixed shaft structure design: It adopts a unique structure that the main shaft is fixed and the eccentric sleeve rotates around the main shaft. Optimized transmission components and internal structure design make it strong in bearing capacity with advantages of large installed power, small size, high efficiency and low noise.

Laminated crushing chamber design: The material is crushed by the principle of laminating crushing, and the crushing efficiency is greatly improved by optimizing the equipment and cavity type; the finished material has a cubic shape, uniform fineness with high quality.

Various crushing chamber configuration: When equipped with the medium and fine crushing chamber, only a small number of parts such as the corresponding cavity liner are needed to replace, meeting the needs of medium and fine crushing process and achieving a versatile use of the machine.

Through the above details, the three mainstream cone crushers have their own characteristics and outstanding advantages. But which one is the best suitable one, the users can also make a decision according to the following form:

Under the background that the world's mineral resources are in short supply and countries are robbing resources overseas, the cone crusher market will be even broader. Compared with jaw crusher and impact crusher, cone crusher has a higher demand on technology. And tiny details can affect the lifespan of the equipment.

Although there are many kinds of cone crushers and countless manufacturers available on the market, but users should choose the professional and reliable manufacturers when purchasing. In addition, through the above introduction, users can choose the cone crusher that suits them best according to their economic strength, crushed materials and target output.

fixed crusher is a stone crusher equipment

Generally, fixed crusher(also called stone pulverizer) is a type of rock equipment breaking materiallike granite, gold mine, construction wasteand so on. There are different types of fixed crusher which all should be installed at the fixed worksite to reduce materials into small size products.

A fixed crusher is designed to crush series of materials includingaggreate, gravel and mine ores. It is widely used in many fields like mineral industry, building material, highway, hydro project and chemistry industry.

Out of safety and performance, it's necessary to drive a pile which is an engineering project depending on the soil condition, the number of piles, construction expertise, rock crushing machines and labors needed. It commonly takes 6-10 days to drive a pile with 10m in depth. And several workers are required to make regular inspections on a fixed crusher during the operating work, its aim is to eliminate unanticipated glitches and save its operating time, which we call manpower cost on a fixed crusher machine. Here comes a more specific chart regarding the total cost of driving a 10m*10m*10m (length*width*depth) pile as bellow:

Freight cost refers to the capital required for transporting raw materials by trucks with cranes to the operating site for crushing and the end products generated from a series of process including crushing and screening to another spot for transaction.

How much is a fixed crusher? Whether rock crusher mining equipment is cheap or not depends on its capacity, model, performance and manufacturer. Before you get started, you'd better learn more information about a stone crushing machine. For example, what's the best materialsmaking fixed blade of a fixed crusher so that its service life of can be prolonged.

Product: Fixed crusher is a kind of versatile rocks machine with large series of models. The more premium and larger a fixed crusher is, the more it will take. Thus it's wise to figure out the exact requirements on end products and the features such as type and size of raw material needing crushing before purchasing a fixed crushing machine.

Supplier: Other than retailers who are dedicated to supplying crushing equipment which is also called mining crushers, almost small-scale and large-scalestone crusher manufacturers also join the big party to make profits.

Market: To some degree, market always regulates the selling situation of any kind of commodities through the demand and supply rule, so is the fixed crusher. When the demand for fixed crushers is greater than its supply, an obvious increase in the price will be noticed soon, and vice versa.

A fixed crusher is usually teamed up with a series of side equipment to improve the efficiency and reliability of productivity, thus they are made up the whole rock crusher plant, and what are these side equipment?

Take a stationary stone crushing line with the capacity of 100t/h as an example, it consists of more than fixed crushers and several kinds of side equipment like cone crusher machine is also needed. This stone crushing plant could be deployed through the following configurations:

Section 1 includes vibrating feeder, a fixed jaw crusher, cone stone crushers, vibrating screen and sand washer. This section is a perfect option for processing relatively moist materials, for the feeding chute and impact plate could be equipped with heating machine to avoid materials from caking and clogging effectively.

Section 2 contains vibrating feeder, a fixed jaw crusher, hammer crusher, vibrating screen and sand washer. This option is capable of having materials shaped once for good, for the hammer crusher in this line contains rotors with hammer head that could be driven by the rotors rotating at a high speed to crush and reshape the materials crushed by the fixed jaw crusher.

Section 3 Hydraulic cone crusher is mainly composed of many parts, such as: feeder, chute, magnetic separator, cone crusher, wheels or crawlers, etc. Hydraulic cone crusher is the host part of crusher plant and it can be freely matched with single-cylinder cone, multi-cylinder hydraulic cone, full hydraulic cone and spring machines. Based on that, hydraulic cone crusher is featured in integrated design, compact structure, best qualityand good performance, etc.

No matter what kind of mining machine it is, it is supposed to get inspected and maintained after serving in an engineering project for as long as 20 hours, which means that each kind of crushing machine should be maintained once every 20 hours. In the case of a fixed crusher, its maintenance is mainly about overall maintaining and changeable wearing parts, including the purchase of several new pairs of wearing part backups, which constitute the main part of maintenance cost. So, if you want to purchase a fixed plant crusher, apart from the after-market services that the manufacturer provide, you have to master some simple and easy maintenance skills about your stone crusher machine.

Light maintaining: light maintaining mainly refers to inspecting and adjusting, for example, adjusting the clearance of discharging opening and lubrication system of the fixed crusher, as well as changing worn-off wear parts such as liner plate.

Regular maintaining: regular maintaining of the fixed crusher not only includes all the work of light maintaining, but also refers to getting pull rod, axle bush, toggle plate and other worn-off parts changed on the basis of a regular period.

Super maintaining: super maintaining (thorough maintaining) is primarily regarding inspecting and maintaining the fixed crusher as a whole so as to update each of spare parts even achieve the technological innovation of a fixed crushing machine.

How often a super maintenance should be done depends on the daily performance and inspection of the fixed crusher, which says there is not a certain frequency on deploying a thorough maintenance.

Environmental law, also known as environmental and natural resources law, is a collective term describing the network of treaties, statutes, regulations, common and customary laws addressing the effects of human activity on the natural environment. The core environmental law regimes address environmental pollution. A related but distinct set of regulatory regimes, now strongly influenced by environmental legal principles, focusing on the management of specific natural resources, such as forests, minerals, or fisheries. --Wikipedia

The issue of environment protection in mineral industry has been on the table. And more and more companies engaged sandstone business have been shut down owing to severe environmental pollution, which reveals that a fixed stone crusher could bring users long-term benefits one the basis of eco-friendly. Then how to make a fixed crusher machine friendly to environment? The code could be cracked in terms of keeping down dust and noise.

The complete installation of a fixed crusher mainly contains: preparing sitesite designequipment deliverylocating a spot for machinepile drivinginstallationsoft operating (without materials) soft operating (with materials).

Before purchasing a fixed crusher, a series of paperwork needs to be applied from local government to make the mining project legitimate, then locating a right place for that mining project, which is also followed by confirming final requirements and making a good budget according to budget lists shared above. Finally comes the trading part of selecting a worthwhile crusher supplier to cooperate with. After everything related to purchase is settled down, it's time to install the fixed crusher and test the machine, if none of glitches even breakdown happen during the processing of the machine, this mining project is technically setting up.

Regarding of how long it will take to get a fixed crusher installed, a small fixed crusher is going to take approximately a whole week, a medium one is about a half month and a big one calls for around 1-2 months, thus running some real tests on the product you are going to buy in advance is undeniably a wise decision.

It is a kind of primary crushing machine widely applied to breaking gold mine, non-metallic ores and aggregate. With the maximum capacity of 2200 t/ph and large feeding opening, it is qualified to massively process fresh raw ore even in the size of 1500mm.

Besides, its jaw plate is made of high manganese steel with great wearing resistance and reliability, thus enabling it to continuously crush coarse tough materials within 20 hours. A fixed jaw crusher commonly consists of three main parts, frame, jaw plate and side guard plate, and plays a crucial role in stone crushing plant and sand production line.

Materials: It is mainly used to crush all series of tough and soft minerals with compressive strength (Compressive Strength refers to the capacity of a material or structure to withstand loads tending to reduce size) of lower than 320Mpa including rocks and ores such as concrete, gold mine, river stone, blue stone, coal, granite, quartz and limestone. So, there is funny thing that people sometimes name the crushers according to different materials, such as concrete crushers, coal crushers, lime crushers, granite crusher machine, gold mining stone crusher, ore crushers, rock crushers, etc.The maximal feeding size of the fixed jaw crusher machine could reach 1500mm and its discharging size could be adjusted between 10-400mm. There are different types of stone crusher machine, some of them are used in primary crushing, some are in secondary crushing and others are in tertiary crushing. The general differences of functions among these pulverizer are processing materials with differernt hardness, size, length and producing the various degree of partical shapes.

Pre-startup Checklist Condition Solution Whether gear plates are worn off badly Replace them with new ones Whether discharging opening is fitting Adjust it in time Whether some gold or non-metallic ores are left in crushing chamber Remove them out immediately Whether link toggle is loosing Tighten it up Whether boot caps on belt wheel and flying wheel remain intact Replace the boot caps with new ones Whether the tightness of triangle belt and pull rod springs is appropriate Adjust them accordingly Whether oil tank is full Refill it Whether electrical equipment and signal systems are working properly Get them fixed prior to operate is a must-have

Jaw plates of the fixed crusherinclude fixed jaw plate and movable jaw plate. The fixed jaw plate is fasten to the frame, while the top of movable jaw plate is connected with eccentric shaft and the bottom is supported by thrust plate. As the easiest worn part, the quality of jaw plate has a lot to do with users' operating sale and long-term return on investment. And it's suggested to replace the jaw plate when its wear loss makes it by 3/5, according to which, at least a pair of jaw plate backups should be prepared in case, because the average operating life of a jaw plate is about 4 months.

Because the average operating life of a jaw plate is about 4 months. What kind of materials should be selected to build jaw plates of the fixed crusher? High manganese steel could be regarded as the most ideal material candidate, due to its great reliability and tenacity.

Impact Rock Crusher is a type of crushing machine applied to metallurgy, gold mine, chemistry, building material and hydro project industry. With the capacity of 30-800t/h and maximal feeding size of 800mm, and it is more suitable for secondary crushing on various materials, compared with a fixed jaw crusher with a bigger productivity and feeding size.

Additionally, this kind of stone pulverizeris mainly made up of frame, drive mechanism, rotor, toggle, hammer and others and could be divided into two variations: single-rotor type and dual-rotor type, based on the number of rotors.

Checklist for Soft Operating on Impact Crushers Condition Solution Whether some debris is left inside the machine Clean it up timely Whether all of the spare parts are bolted well Fasten them up immediately Whether bearing shaft is in good lubricating condition Rub more grease on it Whether the clearance between liner plate and rotor reaches standard level Adjust it accordingly

It's mainly the rotor with hammed head that runs at a high speed to drive the stone pulverizer to work, thus the rotor has to be heavy enough to crush materials in large size and remain a stable performance, which is why the rotor is commonly made of high chromium gold with great impact resistance. It is also good at crushing materials like pebble, quartz, marble and other ores and these stone crushering equipment perform pertectly to produce various size of particle shape.

Unstable working condition of rotor could result in unsteady performance of machine out of strong inertia and cause overload inside the machine with huge vibration, leading to overheat the shaft bearing, which definitely influences the uptime and service life.

The Hongxing cone crusher can be divided into a spring cone crusher, a single cylinder hydraulic cone crusher, a spring hydraulic cone crusher(also known as the Symons cone crusher), a full hydraulic cone crusher, a multi-cylinder hydraulic cone crusher, etc.

According to the structure, it is widely applied in the industries such as sand stone material yard, concrete sand making, dry powder mortar, construction waste, mechanism sand, power plant desulfurization and other industries, and is used for crushing various ores and rocks of medium and medium hardness (below 350 MPa), such as calcite, limestone, granite, river cobble, dolomite, green stone, glass, cement clinker, iron ore, etc.

Ingeneral, how much you will spend on fixed crusher is affected by many factors, such as mining equipment manufacturers, specifications of the crusher, quality, technology, processing capacity, market demand, etc. Different crusher manufacturers have different performance and quality, therefore, customers must purchase at regular manufacturer when purchasing mining equipment. There are many types of crushers, including some star products like hydraulic cone crusher, fixed jaw crusher, rock jaw crusher, impact stone crusher, etc. In addition, Hongxing Machinery is known as sophisticatedtechnology, best quality, and good reputation. Come on and you'll see that we have different types of crushing equipment.

hydraulic cone crusher for hard stones | fote machinery

Applied Materials: stone, aggregate, gravel, limestone, quartz, basalt, iron ore, gold ore, etc. The automatic hydraulic system provides safety and setting-adjustment functions. This cone crusher also makes the ways of monitoring and maintenance much simpler and eaiser.

Multi-cylinder hydraulic cone crusher is the world's advanced level cone crusher developed on the basis of the latest technology introduced from Germany, which not only improves productivity and efficiency, but expands the scope of application.

Multi-cylinder hydro cone crusher has an unmatched level of crushing performance in general crushing, fine crushing and superfine crushing of various materials from limestone to basalt, from stone production to a variety of ore crushing.

Multi-cylinder hydraulic cone crusher is the latest generation of cone crusher which can replace spring cone crusher and update general hydraulic cone crusher in today's mining industry, and it is the ideal crushing equipment for large stone plant and mining crushing.

High efficiency: Both ends of the multi-cylinder hydraulic cone crusher have spindle support, so it's able to withstand greater crushing force and greater stroke. If added with special crushing cavity adapting lamination principle, the machine has higher efficiency.

The machine has a perfect design combination of crushing stroke, crushing speed and crushing cavity shape, which makes the machine have 35%~60% higher output than the old spring cone Crusher in case of the same fixed cone diameter.

The multi-cylinder hydraulic cone crusher uses special crushing cavity, as well as the principle of laminated design, so that the cube proportions of finished product is significantly increased, with less needle-shaped stones and more evenly particle levels.

Hydraulic overload system can enlarge discharge hole to discharge obstruction when the machine is jammed, so it plays a positive role as insurance and significantly reduces maintenance and increases productivity.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

cone crushers | crushing plants | dove

are designed for efficient application of crushing in mining industry, for efficient down sizing of various types of ores, prior to grinding operation and for efficient recovery of various minerals, as well as various quarry, aggregate and construction applications.DOVE Cone Crushers are proven in various secondary and tertiary crushing applications, including limestone, abrasive quarry rocks, granite, basalt, quartzite, river gravel, slag, silica sand, cement clinker, coral and glass.

The unique design combined with highest quality workmanship, casted and heat-treated steel material used for the fabrication, has resulted in producing the highest quality range of Cone Crushers. The main frame of the crusher is stress relieved after welding and heavy-duty reinforcements are installed at high stress points. High quality tension bolts secure the two sections of mainframe, insuring the top and bottom sections to be fastened securely and in order to withstanding strong impact during the years of operation.High quality wear-part is used in order to bring longer operating life for the crusher, which includes incorporating rib-liner in the bottom section of the main frame, as well as tungsten carbide wear pins in key locations.

Cone Crushers are configured with Hydraulic Lifting-Arm, where in the case of power failure, it allows the operator for rapidly rotating and removing the top-shell in order to remove the stuffed material inside the crushing chamber. The hydraulic adjustment unit will also allow easily and rapidly to perform the required setting adjustments, and changeovers of discharge openings, with minimum downtime. All models are configured with Hydraulic Cleaning unit with eight-frame mounted release cylinders.

Cone Crushers are configured with Hydraulic Lifting-Arm, where in the case of power failure, it allows the operator for rapidly rotating and removing the top-shell in order to remove the stuffed material inside the crushing chamber. The hydraulic adjustment unit will also allow easily and rapidly to perform the required setting adjustments, and changeovers of discharge openings, with minimum downtime. All models are configured with Hydraulic Cleaning unit with eight-frame mounted release cylinders.

Cone Crushers are configured with several safety features. The lubricating unit is interlocked with the main motor, in order to provide additional safety, which includes oil filtration and automatic shut-down in the event of high oil temperature, as well as low oil flow. Crushers are configured with Spring-Loaded release system, which allows any uncrushable material to pass through the crusher, withoutcausing damage to the crusher. The locking system (manual or hydraulic), will easily secure the crushing clearance. All models are configured with proven spring-type mechanism, in order to recover Tramp-Iron and provide protection to the unit.

tracked cones

Forward Product Conveyor Extra wide product conveyor with full length rubber side skirts utilising wear resistant steel clamp plates. Maximised discharge height for product stockpiling. Optional screen and recirculating conveyor can be provided.

Extra wide product conveyor with full length rubber side skirts utilising wear resistant steel clamp plates. Maximised discharge height for product stockpiling. Optional screen and recirculating conveyor can be provided.

Extra wide product conveyor with full length rubber side skirts utilising wear resistant steel clamp plates. Maximised discharge height for product stockpiling. Optional screen and recirculating conveyor can be provided.

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hydraulic cone crusher | shanghai dingbo heavy industry machinery co., ltd

DBM Hydraulic series Cone Crusher (Hydraulic) adopts computer optimization design to speed up main shaft speed. The unique crushing chamber replace system can quickly replace components in crushing chamber to meet different size requirement. The friction disc design and rotation of eccentric shaft bushing around fix cone plus more reasonable labyrinth seal system are unique features of HP series, which have more advantages like easier operation, larger application scope, more reliable, more smooth functioning comparing with spring and traditional cone crusher.