type gold ore jaw crusher

ganzhou gelin mining machinery co., ltd

Ganzhou Gelin Mining Machinery Co., Ltd. is an over 30 years experience expert manufacturing mining machines in China, covering an area of over 30,000 square meters, having more than 25 sets of heavy processing equipments and with an annual output of more than 2000 sets of mining machinery.We have international level & experienced engineer team and a strong R&D department and have been cooperating with domestic and oversea Scientific Research Institutes for many years. Our purpose is to track i...

mini rock crusher

The 1 X 2 911MPEJAC12Small Rock Crusheris designed to finely crush rock and stone like aggregates or your favourite ore type (gold, silver, copper, etc.) from 3/4 (20mm) feed size down to a D50 50% passing 50 Mesh (300um).

This small jaw crusher and its miniature opening gape of25 mm X 50 mm, can easily adjust by hand. The CSS, known as the closed-side-setting, can be choked down to effectively pulverize the rocks you feed in. With a short throw at fast 500 RPM, this small rock breaker acts as a quasi-sample pulverizer without the dust of your typical cheap hammermill, chain beating, impact crusher amateur prospectoroften fall for and purchase online.

The 911MPEJAC12 with a crushing capacity of 10pounds (5 kg) per hours, ultra-portable (20 lbs.), and Small Rock Crusheris a Blake type crusher with a high-speed eccentric overhead. The product from this crusher is generally liberated enough and ready to pan or table for gravity gold separation. When you buy this Small Rock Crusher, you also get: An operating manual, the pulley, pre-installed AR450 jaw plates. Without the 1 HPmotor or mounting frame. This crusher canoperate with gas/diesel engine as well as electric motor. Be sure to ration your speed/sheaves to have 500 RPM on the jaw and you are set to crush-those-rocks.

jaw crusher gold ore processing plant manufacturer

The Jaw Crusher is mainly for cutting down the size of stones. Its the first main machines in a rock mining processing plant. Your can choose the type of jaw crushers according to your rock capacity and application. There are 4 types for you choice. small jaw crushers for 1-20 TPH capacity, Large jaw crushers for 15-350 TPH capacity, Mobile jaw crusher for using in different mining site, the fine discharge crushers are always be used as the second jaw crusher.

gold processing,extraction,smelting plant design, equipment for sale | prominer (shanghai) mining technology co.,ltd

Prominer maintains a team of senior gold processing engineers with expertise and global experience. These gold professionals are specifically in gold processing through various beneficiation technologies, for gold ore of different characteristics, such as flotation, cyanide leaching, gravity separation, etc., to achieve the processing plant of optimal and cost-efficient process designs.

Based on abundant experiences on gold mining project, Prominer helps clients to get higher yield & recovery rate with lower running cost and pays more attention on environmental protection. Prominer supplies customized solution for different types of gold ore. General processing technologies for gold ore are summarized as below:

For alluvial gold, also called sand gold, gravel gold, placer gold or river gold, gravity separation is suitable. This type of gold contains mainly free gold blended with the sand. Under this circumstance, the technology is to wash away the mud and sieve out the big size stone first with the trommel screen, and then using centrifugal concentrator, shaking table as well as gold carpet to separate the free gold from the stone sands.

CIL is mainly for processing the oxide type gold ore if the recovery rate is not high or much gold is still left by using otation and/ or gravity circuits. Slurry, containing uncovered gold from primary circuits, is pumped directly to the thickener to adjust the slurry density. Then it is pumped to leaching plant and dissolved in aerated sodium cyanide solution. The solubilized gold is simultaneously adsorbed directly into coarse granules of activated carbon, and it is called Carbon-In-Leaching process (CIL).

Heap leaching is always the first choice to process low grade ore easy to leaching. Based on the leaching test, the gold ore will be crushed to the determined particle size and then sent to the dump area. If the content of clay and solid is high, to improve the leaching efficiency, the agglomeration shall be considered. By using the cement, lime and cyanide solution, the small particles would be stuck to big lumps. It makes the cyanide solution much easier penetrating and heap more stable. After sufficient leaching, the pregnant solution will be pumped to the carbon adsorption column for catching the free gold. The barren liquid will be pumped to the cyanide solution pond for recycle usage.

The loaded carbon is treated at high temperature to elute the adsorbed gold into the solution once again. The gold-rich eluate is fed into an electrowinning circuit where gold and other metals are plated onto cathodes of steel wool. The loaded steel wool is pretreated by calcination before mixing with uxes and melting. Finally, the melt is poured into a cascade of molds where gold is separated from the slag to gold bullion.

Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.

blanket gold mine - caledonia mining corporation plc

The current Blanket mining area has eight ore shoots in the producing section of the mine. The majority of the mine production is sourced at present from the AR Main and AR South ore bodies with a lesser contribution from the Blanket, Eroica and Lima reefs.

Significant early production milestones were: in 1965 Falconbridge acquired the property and increased gold production to an average of approximately 45 kg per month; in 1993 Kinross took over the property and built an enlarged Carbon-in-Leach (CIL) plant with capacity of approximately 3,800 tonnes per day (tpd) to treat an old tailings dump together with the run-of-mine ore.

On April 1, 2006 a wholly-owned subsidiary of Caledonia Mining Corporation completed the purchase of the Blanket Mine from Kinross. Caledonia has allowed Blanket to make considerable capital investments in its underground, surface and township facilities. These investments culminated in the commissioning of the No 4 Shaft Expansion Project at the end of September 2010 whichincreased Blankets hoisting capacity from the No. 4 Shaft from 500 tonnes per day to 3,000 tonnes per day.

The current Blanket mining area has eight ore shoots in the producing section of the mine. The majority of the mine production is sourced at present from the AR Main and AR South ore bodies with a lesser contribution from the Blanket, Eroica and Lima reefs. AR Main and AR South are massive ore bodies up to 30 m wide and are ideally suited to the long-hole open stope mining method, while the remainder of the Blanket ore bodies are tabular and better suited to underhand stoping methods.

Following the successful commissioning of the No. 4 Shaft Expansion Project in September 2010, the underground workings have increased production to approximately 1,200tonnes of ore per day using both long-hole open stoping and underhand stoping methods. Broken ore is trammed along the 22 Level rail system by battery locomotives and the ore cars trains are self-tipped onto one of three grizzlys above the ore bins which are located between 22 Level and the 765m level crushing station. The minus 300 mm rock held in three underground storage bins, Payable ore and waste ore are held in separate storage bins and handled accordingly. Ore is gravity fed from these ore bins onto the 765m Level crushing station conveyor which discharges the ore onto a vibrating grizzly feeder which discharges the oversize into a 30 x 20 Telsmith jaw crusher.

The underground crushing station ensures that all the run-of-mine ore is reduced to minus 150 mm in size as this provides for the optimisation and greater efficiency of the automated skip loading and hoisting operations. This allows mining and hoisting activity to continue without interruption.

Blanket No. 4 Shaft has been equipped with the first automated loading system in Zimbabwe which sequentially fills the two six tonne ore skips which are hoisted from the 789m level to surface. The use of this state of the art automation reduces the risk of ore loading accidents and injuries, reduces manpower costs, minimises spillage, reduces skip loading times, increases hoisting capacity, ensures precise ore tonnage accountability, and enhances winder efficiency while lowering loading and hoisting costs.

The double compartment No. 4 Shaft is Blankets main shaft for hoisting ore to surface from the loading stations at 510m and 789m below surface, and it has a proven hoisting capacity of 110 tonnes per hour from 789m. The Jethro and Eroica Shafts and the No.5 and No.6 Winzes are used for transporting personnel and materials underground, and the No.2 and Lima Shafts are also used for hoisting ore to surface.

The entire underground and surface operations of the Blanket mine, except for the Lima Shaft, including the surface compressors and the No 4 Shaft Winder can be operated by the 10,000kVA standby diesel powered generating sets which were installed and commissioned in May 2011.

This standby generating station ensures that all mining and metallurgical operations continue notwithstanding any interruptions to the electrical power supply from the grid. The level of interruptions to Blankets power supply has diminished considerably following the agreement of an un-interrupted power a supply agreement between Blanket and ZESA. In the year to 31 December 2012, the standby generators were used for a total of 108 hours (2011, 121 hours).

The Blanket Mine is situated in the Gwanda Greenstone Belt, a typical Archaean greenstone-hosted gold deposit. The deposit is situated on the northwest limb of the Gwanda Greenstone Belt along strike from several other prominent gold deposits. Blanket is the largest producing mine in a belt which at one time had 268 operating mines.

The Gwanda Greenstone Belt extends 80 km in an east-west direction and consists predominantly of basaltic rocks (greenstones) with minor felsic and ultramafic units. The belt has been intensely sheared and intruded by granites resulting in complex deformation structures and vertically dipping strata. The shape of the gold ore bodies is controlled by these structures, resulting in their near vertical orientation.

Near vertical shear zones are developed throughout the belt and are the loci of most of the small mines that have been discovered in the area. Most of Blankets prospects are of this type. Many of these now defunct small mines were shallow, had historically high recovered gold grades and closed towards the end of the 1960s when the gold price was low and the mining and metallurgical techniques available at that time were such that the mines became un-economic. The area has a long history of gold production and remains highly prospective and must therefore be regarded as an attractive exploration area as it has never been subjected to modern exploration techniques.

Active mining at the Blanket mine takes place over a 3 km strike that includes 8 discrete ore shoots. Fig NN provides a north-south vertical projection of the various Blanket ore shoots. Mineralisation occurs in near vertical shoots aligned along an approximately north-south axis. The ore shoots vary in shape from the tabular to lensoidal quartz reefs to the massive to pipe-like disseminated sulphide reefs (DSR).

Gold mineralisation occurred as a result of the reaction between rising hot fluids and the iron rich minerals in the shear zones. The reaction involved the formation of sulphide minerals, predominantly arsenopyrite, as the sulphur in solution reacted with iron in the rocks. Gold, which was also transported by the fluids, became attached to the arsenopyrite to form the gold ore. These reaction zones are located within the more ductile tensional high strain areas of the shear zone.

Blanket Mine is part of the group of mines that make up the North Western Mining Camp otherwise also called the Sabiwa group of mines. What is today referred to as Blanket Mine is a cluster of mines extending from Jethro in the south, through Blanket itself, Feudal, AR South, AR Main, Sheet, Eroica and Lima in the north. These ore shoots occur in the Blanket shear zone, a low angle transgressive shear characterised by the presence of biotite relative to the massive amphibolites forming the country rocks.

A regional sub horizontal dolerite sill intruded the above sequence and is emplaced about 500 meters below surface. The sill does not cause a significant displacement and although it truncates all the ore shoots, the mineralised shoots continue undisturbed below the sill.

Since the rock units of the Gwanda Greenstone Belt are tilted on their side and strike north-south in the vicinity of Blanket Mine, the stratigraphic sequence is exposed from the oldest in the east to the youngest in the west. The Felsic unit consisting of quartzite and sericite-quartz schists forms the base of the stratigraphy. No gold deposits have been recorded in this unit. Overlying this unit to the west is the Ultramafic-Mafic unit interlayered with banded iron formations. Gold occurs in this unit at Vubachikwe mine, which is adjacent to Blanket, where the deposits are confined to steeply dipping folds in the banded iron formation layers. The Ultramafic-Mafic unit is in turn overlain to the west by the Mafic unit, a thick sequence of tholeiitic and pillow basalts. Within the Mafic unit a prominent shear zone up to 50 meterswide runs the length of the property and is the locus of all ore bodies on the Blanket property. The sequence is completed by an Andesitic unit which caps the stratigraphic sequence.

The first type is the disseminated sulphide replacement type which comprises the bulk of the ore shoots. Typically these zones have a silicified core with fine sprays of disseminated arsenopyrite hosting the best grades. Disseminated sulphide replacement ore bodies range up to 50m in width with a strike between 60m and 90m. Free-milling gold constitutes up to 50% of the total metal content with the remainder occluded within the arsenopyrite.

Quartz-filled shear zones form the second type of mineralisation. Two quartz shears are mined at Blanket Mine, the Blanket Quartz Reef and the Eroica Reef. These reefs tend to have long strikes but are not uniformly mineralized although continuous pay shoots of over 100 m on strike are not uncommon. The Quartz Reef at Blanket has a surface strike of some 500 m, but economic mineralisation is restricted to three 90 m shoots which were defined on surface by the early workers. Grade fluctuations are more extreme in the quartz reefs than in the disseminated type reefs but on average these shears have higher grades and are used as a sweetener of ore to the mill.

Caledonias Board and Management have completed a review of alternative expansion and diversification plans for Caledonia. Both the Board and Management have also addressed the revised production projections for the Blanket Mine and the possible benefits of diversifying Caledonias production base. Caledonia has concluded the best returns on investment remain at the Blanket Mine in Zimbabwe, which continues to be cash generative in the current adverse market conditions and also offers significant investment returns that exceed alternative investment opportunities.

The objectives of the Revised Plan are to improve the underground infrastructure and logistics and allow an efficient and sustainable production build-up. The infrastructure improvements will include the continuation of the No. 6 Winze, the development of a Tramming Loop and the sinking of a new 6-meter diameter Central Shaft from surface to 1,080 meters.

The increased investment pursuant to the Revised Plan is expected to give rise to production from inferred resources of approximately 70-75,000 ounces in 2021, this being in addition to projected production in 2021 from proven and probable mineral reserves of approximately 6,000 ounces. The Revised Plan is also expected to improve Blankets long term operational efficiency, flexibility and sustainability.

The skips automatically tip ore hoisted to surface into the Shaft Bins on the No4 Shaft headgear. Ore is gravity fed from the Shaft Bins onto the No1 belt which conveys the ore over the automated belt scale and to vibrating screens and 1424 Telsmith jaw crushers. This crushing circuit reduces the ore to minus 50 mm and it is then deposited by the No 2 belt stockpile conveyor onto the coarse ore stockpile which has a live capacity of approximately 2,000 tonnes of material. Ore from the coarse ore stockpile is then fed onto the triple-deck vibrating screen with the oversize being crushed to minus 12 mm by one of two 38H Telsmith Gyrasphere crushers. The 12mm ore is then fed into the 600 tonne Mill Bin which feeds the two (of the three installed) 1.8 x 3.6 m rod mills where it is milled down to approximately 70% passing 75 microns, before being passed through two 30 inch continuous Knelson Concentrators where approximately 49% of total gold production is recovered. The Knelson Concentrator tails are pumped through cyclones and into a 3.66 x 4.9 m x 750kW (1,000 HP) regrind ball mill. As part of the No.4 Shaft Expansion Project, the capacity of the secondary crushers was increased to over 2,000 tpd and the capacity of the rod mills was increased to 1,800 tpd. The slurry from the regrind mill is pumped into a carbon in leach (CIL) plant consisting of eight, 600 cubic meter leach tanks equipped with 45 kW agitators where leaching at 50% solids and simultaneous adsorption of dissolved gold onto activated carbon takes place. The CIL plant has a nameplate capacity of 3,800 tonnes of milled ore per day. Elution of the gold from the loaded carbon and electro winning is done on site. Gold is deposited onto steel wool cathodes, the loaded cathodes are acid-digested and the resultant gold solids are smelted in an induction furnace to produce gold bullion of approximately 90% purity, after which the bullion is sold as required by Zimbabwean law to Fidelity Printers and Refiners (Fidelity) in Harare which undertakes final refining and sale. The proceeds of sale (i.e. 98.5% of the value of the gold contained before payment of any royalty) are paid directly into Blankets foreign currency account with its commercial bank in Zimbabwe within 7 days of receipt of the gold by Fidelity.

Overall gold recovery rates have been increased from 85% at the time of acquisition by Caledonia to over 94% as a result of the re-design of more efficient CIL agitators and the installation of an automated liquid sodium cyanide facility which allows for multiple stage cyanide dosing and monitoring of the CIL. The PSA (Pressure Swing Adsorption) Oxygen Generator has been re-commissioned and the controlled sparging of oxygen into the CIL has resulted in an increase in leach recoveries to approximately 94%.

No. 1 Conveyor feeding the two Primary Jaw Crushers. Tailings from the CIL circuit contain less than 30 ppm of cyanide, and are pumped to one of two tailings dams which are operated and maintained by Fraser Alexander, and are inspected and monitored daily by Blanket.

Historical operating statistics for the Blanket Mine are available in Caledonias MD&A, which can be found in the Investor section of Caledonias website. Blankets historic financial performance up to February 2009 was accounted for in Zimbabwean dollars until 2009. Due to the extreme hyper-inflationary environment which prevailed in Zimbabwe until early 2009 and the resultant devaluation of the Zimbabwean dollar, Blankets stated historic financial statements are unhelpful for the purposes of evaluating Blankets historic financial performance. The Zimbabwean dollar was abolished in February 2009 and all financial transactions in Zimbabwe now take place using other currencies, including the US Dollar, the South African Rand and the Botswana Pula. With effect from 1 January 2009, Blanket has prepared its accounts in US Dollars.

The proposed Central Shaft will be a 3,000 tonne per day, 6-meter diameter, 4-compartment shaft that will transport men, equipment and material from surface to 1,080 meters below surface. The shaft will be located between the AR Main and AR South ore bodies, in the middle of Blankets mining area. Construction on the shaft is expected to commence in July 2015, following completion of the Tramming Loop. The capital cost of the Central Shaft is expected to be approximately US$23 million. The shaft will be sunk in two simultaneous phases: from surface from 750m below surface and is expected to be completed in July 2017. Once complete, the Central Shaft will provide access for horizontal development in two directions on two levels below 750m.

The increased investment pursuant to the Revised Plan is expected to give rise to production from inferred resources of approximately 70-75,000 ounces in 2021, this being in addition to projected production in 2021 from proven and probable mineral reserves of approximately 6,000 ounces. The Revised Plan is also expected to improve Blankets long term operational efficiency, flexibility and sustainability.

The Revised Plan includes a revised life of mine plan for the Blanket Mine (the LOM Plan) in terms of which it is anticipated that the approximate production from existing proven and probable mineral reserves above 750 m level will be as set out below.

Central Shaft and the associated capacity improvements in the Blanket Processing Plant are expected to enable an increase in gold production at Blanket to 75,000 ounces by 2021 and 80,000 ounces from 2022 onwards. Improved access to Inferred Mineral Resources at depth is expected to enable the maintenance of this 80,000 ounce per year production rate until approximately 2034.

The new Central Shaft and the deepening of No 6 winze will provide access to the current inferred mineral resources below 750 meters and allow for further exploration, development and mining in these sections along the known Blanket strike, which is approximately 3 kilometers in length. The PEA has been prepared in respect of the inferred mineral resources below 750 meters. Based on the PEA, additional approximate production from current inferred mineral resources (excluding the projected production set out above) may be achieved in the following indicative ranges:

The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the PEA will be realised. Diamond drilling and development will continue with the objective of increasing confidence in order to upgrade the categorization of the resources.

The LOM Plan and the PEA have been reviewed by Minxcon Consulting, an independent mining consulting company. A technical report prepared in compliance with National Instrument 43-101 which summarizes the revised LOM Plan and the PEA will be filed on SEDAR before December 17, 2014. The most important assumptions on which the PEA is based include, a gold price of US$1,200 per ounce, achievement of the targeted production set out above and the accuracy of the projected capital costs.

It is also intended to continue exploration at two of Blankets satellite projects, Mascot and GG. No production forecasts are attributed to mining activity at either GG or Mascot at this stage as neither of these currently have defined NI43-101 mineral reserves or resources.


Getting the right mining equipment can help you see success in the mining industry. Finding the right equipment does not have to be difficult. Here are some of the more common questions that may come up when searching for mining equipment to complete your supply.

Jaw crushers work well with medium to fine crushed materials. The quality of the materials produced from this type of equipment are suitable for lab or production use. Jaw crushers can be used on materials including iron ore, calcite, slag, basalt, and others.

gold ore rock crusher impact flail processing quartz crushing mill - gold-mill.com

These portable impact mill rock crushers that we produce are high quality, made in the USA impact mills that crush rocks and realease gold bearing ore. These

are made of the highest quality, super thick, high carbon, industrial steel materials for years of trouble free use. We then use an industrial quality high

temperature powder coating to protect the mill from corrosion and to keep its beauty for many seasons to come. We also show you how to crush, grind

and process your gold ore bearing quartz material and offer information on gold recovery with these units. (800) 688-4080

NEW Gold Stryker GS-4000 HV (High Volume) is a high output / dual adjustable discharge / heavy duty version flail impact rock crusher gold mill that is very portable and perfect for the small gold mining operation. The Gold Stryker GS-4000HV uses a 13 HP Honda Industrial engine for many years of trouble free use. It can process and crush up to 3-3.5 tons of material in a day, all the way down to #300 mesh through the mill to release the gold. $6499 Sale

(The quantity of material the GS can process depends on the size, density and hardness of the rock being fed into the hopper. The smaller the rock, the more material you can run in a day.)

The New Gold Stryker GS-5000HD is a large flail impact rock crusher gold mill that is very portable and perfect for the small gold mining operation The Gold Stryker GS-5000HD uses a HP Honda Industrial engine for many years of trouble free use. It can process and crush up to 5+ tons of material in a day, all the way down to #300 mesh through the mill to release the gold. $7899 Sale

(The quantity of material the GS can process depends on the size, density and hardness of the rock being fed into the hopper. The smaller the rock, the more material you can run in a day.)

Gold Stryker GS-7000-LD is a very large flail impact rock crusher gold mill that is very portable and perfect for the small gold mining operation. The Gold Stryker GS-7000-LDuses a large 25 HP Honda Industrial engine for many years of trouble free use. It can process and crush up to 7 tons in a day, all the way down to #300 mesh through the mill to release the gold. $15999 Sale

(The quantity of material the GS can process depends on the size, density and hardness of the rock being fed into the hopper. The smaller the rock, the more material you can run in a day.)

Our Gold Stryker impact rock crusher mill is a very portable unit and a serious work horse. Not a small toy for testing a few rocks. They will also process the gold

daily. Many of our customers are located in South America, Canada, Africa, Alaska, The Bahamas and other far away places. If you can see this web page, then we can ship to you!

rock crushers for commercial gold mining operations

Rock crushers usually hold the rocks to be crushed in between two solid surfaces and apply a force that forces the molecule of the materials to separate or change alignment. Rock crushers are extensively applied in the mining sector where rocks containing the ore are crushed before the mineral is extracted.

In most cases, mining operations may have more than one crusher depending on the desired outcome of the crushing process. The primary crusher handles course rocks while the secondary, tertiary and sometimes the quaternary works on finer gradations that can allow for effective extraction of minerals.

Unlike the alluvial gold found in river beds, most of the gold mined underground is found in hard rocks that contain a lot of other materials. To get pure gold from these gold-bearing rocks has to be processed. The first stage is to crush the rocks to smaller fine gravels that will allow for gold molecules to be extracted.

The crushing of gold-bearing rocks is not as easy as it may seem. This is because the rocks have to be crushed to very fine gravels that can allow for gold molecules to be dissolved in mercury or any other chemical used to extract gold from the ore. What this means is that in large scale mining the mines may have more than one crusher (primary, secondary and tertiary crushers) in order to achieve the desired crushing levels.

This type of rock crusher employs the compressive force to break up larger rocks into smaller pieces. The crusher has two vertical jaws; a fixed jaw and a swing jaw. The rocks to be crushed are filled into the crushing chamber (the gap between the two jaws) and then a weighted flywheel is used to create an eccentric motion in the swing jaw to provide the required inertia to crush the rocks.

Jew crushers are designed to be heavy duty machines used as the primary crushers in many mining operations. Because of this, the crushers are robustly constructed. The outer shell of the crusher is made from strong steel or cast iron while the jaws are fashioned from hardened cast iron with a Ni-hard or manganese steel removable lining.

Dodge crushers are designed with the swing jaw fixed at the lower end enabling material to be crushed progressively as they move down the crushing chamber. Dodge crusher as more effective in crushing tough and abrasive rocks.

The gyratory crusher works on the same principle as the jaw crusher but has a conical head and a concave surface. The crushing chamber is lined with a hardened manganese steel material. The rock crushing is caused by a circular movement in the crushing surface and the materials are progressively crushed until they are of a smaller size that can fall off the narrow end of the chamber. The gyratory crusher is often used as either primary or secondary crusher in many mining operations as it delivers sufficient force to crush large ore bearing rocks.

The cone crusher is the most widely used crusher in mining operation across the world. The crusher is designed in a similar fashion as the gyratory crusher but the crushing chamber is less steep with the sides near parallel.

Crushing is done by a gyrating spindle as the rocks move from the wider upper section until they are small enough to fall off the lower narrow opening. Cone crushers are perfect for hard to mid hard ore bearing rocks and are highly productive making it perfect for use in crushing intensive mines. There four major types of Cone Crushers

The Symons cone crusher is widely used to crush medium harness to very hard rocks. Its size allows it to be used as a secondary or tertiary crusher in mining operations and as a mobile crusher in building and construction and chemical industries.

As the name suggests a single cylinder hydraulic cone is made up of a single crushing cone, a hydraulic control system, an eccentric shaft, bowl liner, adjusting sleeve and a hydraulic safety system. It is perfect as a secondary or a tertiary crusher in mining.

Impact crushers do not use pressure to crush rocks but rather employ impact. The material is placed in a cage where an impact is used to crush them. The cage has narrow openings to allow crushed rocks of the right size to escape. There are two major types of impact crushers:

manual & hand operated rock crusher

HOW TO SETUP AND USE THE HAND OPERATEDROCK CRUSHER:The rock crusher is shipped with the handle screwed to the inside of the flywheel. This must be reversed. In the case of the double flywheel version there are two handles. The handle has two flats to accept a 24mm spanner right against the flywheel. Use a 24 spanner or a shifting spanner to hold it still. The nut on the other side of the flywheel is a 30mm spanner. Unscrew the nut and re-mount the handle(s) on the outside so the flywheel can rotate.

The crusher should be mounted on a base for a safe operation. For mobile work it is desirable to mount it on a metal plate or bolt it down on a temporary concrete slab. If the crusher is used on one place only, a sloping base (see picture) can be made for it. The slope makes it very easy to remove the crushed stone. The surface the machine is being bolted onto must be flat. If it is not the frame will be twisted as it is bolted down and it will not work properly. If the surface is already finished and it is not flat, use steel shims under the feet so that when it is bolted tight to the base the frame has not been twisted.

1. There are three adjustment one can make on the Rock Crusher: Top adjustment of the fixed jaw, bottom adjustment of the fixed jaw and stroke adjustment for the swing jaw. Remember that the Fixed Jaw is invertible (can be turned upside down). So it can last you twice as long.

1.1 The adjustment on the top of the Rock Crusher allows you to move the top of the Fixed Jaw (which does not move when the handle is turned) closer to the Swing Jaw (the one that does move). It is used wide open (150mm opening) for crushing large pieces of rock down to a smaller size about 25-40mm. When crushing stone or rubble to a small size (i.e. below 16mm) it will be done in two or more stages for maximum production. The Swing Jaw setting is normally set on the bottom hole which gives the most movement back and forth. To crush rubble (broken cement blocks and concrete), first set the top of the Fixed Jaw to the maximum opening (150mm) and the bottom of the Fixed Jaw also to the maximum size. On the second pass, or when crushing small pieces, set the top of the Fixed Jaw to the 100 position. This is the centre of the three holes. Set the bottom of the Fixed Jaw to give you the final size you want. These smaller settings use a larger proportion of the jaws and crushes more pieces at a time. If the raw material will fit into the 100 or 50mm top opening, make the first pass with a smaller opening unless the material is particularly hard.

1.2 The second adjustment is at the bottom of the Fixed Jaw. This sets the distance between the bottom of the Fixed Jaw and the bottom of the Swing Jaw. The smaller the setting, the smaller the stone has to be in order to pass out of the machine. Do not try to crush stone or rubble down to a small size in one pass. It takes too much time as the lowest teeth have to do most of the grinding.

Pull the pin out of the square bar at the bottom of the Fixed Jaw and align it with the hole that suits the job at hand. There are 5 pin holes and three positions for the Square Bar. This gives 15 steps of 2 mm each. There are four holes in a row with the lowest one giving the smallest size and the top one much larger. The hole out of line near the bottom hole gives the biggest size.

Make the bottom spacing between the jaws in the range of 25 35mm (pin in top hole or in the hole that is out of line). This is the normal setting for the First Pass. After crushing rubble (which will generate some dust and small pieces) use a sieve and take out the larger pieces for re-crushing and make cement blocks with what passes through the sieve.

The third adjustment is the pin at the back of the Swing Jaw. See the three numbered holes in the picture. The pin is much tighter to remove than the other two because it passes through two bearings. Give it a good stiff yank. Clean it if necessary.

The bottom pin has three possible settings. When the pin is in the bottom position (1, and passes through the bearings) the bottom lip of the Swing Jaw moves up and down as well as back and forth slightly. This position passes the most material through the machine per turn. It also allows a large range of sizes to pass through. For example, if the bottom position is used and the Fixed Jaw is set so that the gap between the jaws is 15mm then the Rock Crusher will actually pass out 15-20mm pieces.

If you put in the third pin in the top-most position (3), the range of size produced is reduced. The capacity in wheelbarrows per day is also reduced as it takes more time to pass the pieces through as the Swing Jaw no longer opens and closes at the bottom releasing the stones. The middle setting (2) is a compromise between the two others, allowing a modest range of sizes through. Another type ofhand powered rock crusher.

Crushing rubble for brick making: Set the bottom pin of the Fixed Jaw to the bottom hole nearest to the Swing Jaw. This will make the gap about 6 to 8mm. The handle on the Square Bar cannot be turned to a fine adjustment (2mm each) when the jaws are this close together the pin must be removed, the Square Bar rotated, and the pin re-inserted if you want to change the spacing of the jaws. Re-grind the material sieved out of the first pass. It might be as little as 1/4 of the original volume. It will generate a lot of very small particles and has a slower throughput than before. Sieve the output again for any flat flakes that have made it through the whole process uncrushed. Keep these aside and dump them in when the next batch goes through for a second pass.

gold ore processing solution - eastman rock crusher

There is no metal in the world that can intervene in human economic life like gold, and have such a major impact on human society. Its dazzling luster and unparalleled physical and chemical properties have a magical eternal charm. Although the social status of gold has experienced vicissitudes, ups and downs, and ups and downs in the history of human civilization for thousands of years. But so far, it still maintains a sacred aura among many people, the wealth that the world seeks together.

The process of gold ore processing and production mainly includes three processes: crushing, grinding and beneficiation.In the crushing process, the three-stage closed-circuit crushing is more modern and suitable for high-hardness gold ore crushing, which can complete the work of ore crushing and partial dissociation, thereby improving the subsequent grinding efficiency;In the grinding process, the second stage and one closed grinding is an efficient grinding process, which can make the gold ore grinding more fully;Among the beneficiation processes, the representative new processes that have emerged in recent years mainly include: gravity separation, amalgamation, cyanidation, flotation, etc.

Gold is loved by consumers around the world. Not matter placer gold, or rock gold, Eastman can provide products and technical support for large scale and small scale gold mining plants. Contact us to do free design.

Large pieces of gold ore are evenly sent to the jaw crusher or coarse crushing mobile station (primary crushing) by the vibrating feeder for coarse crushing; After coarsely crushed gold ore are screened by vibrating screens, they are sent to a single-cylinder hydraulic cone crusher (second crushing) for intermediate crushing; The crushed gold ore materials are sent to a multi-cylinder hydraulic cone crusher for fine crushing;

Jaw crusher is mainly used for medium size crushing of various ores and bulk materials. It can crush materials with a compressive strength of up to 320Mpa, divided into two types: coarse crushing and fine crushing. Eastman has PE and PEX series jaw crushers with complete product specifications. Its feed size is 125mm1020mm, and the single machine output is as high as 600TPH. It is an ideal choice for primary crushing equipment.View More>>>

The GP (single-cylinder) hydraulic cone crusher is widely used in the medium and fine crushing process of iron ore, copper ore, gold ore and other metal mines. Eastman single-cylinder hydraulic cone crusher is a high-efficiency crusher designed with advanced American technology and the performance of high-quality materials in the industry.Automatic control and easy operation: using PCL touch screen operation and hydraulic adjustment of the discharge method, the discharge port is easy to adjust, easy to maintain, and it is more convenient and efficient to remove and replace the fixed cone, reducing downtime.<>

HP (Multi-cylinder) hydraulic cone crusher is a new generation of high-efficiency hydraulic cone crusher based on nearly 30 years of crusher research and development experience, combined with domestic and foreign advanced technology, after several generations of product development and application. On the basis of the traditional multi-cylinder hydraulic cone crusher spindle fixed, eccentric sleeve rotating around the spindle structure and laminated crushing principle, the HP series has carried out a breakthrough optimization of the equipment structure, which significantly improves the use performance and crushing capacity of the equipment. The hydraulic lubrication system is designed to ensure the reliable operation of the equipment, while the operation control is more intelligent and humane.<>

The tire-type mobile crushing station is widely used in the crushing process of mines. It can overcome the obstacles that the crushing site, environment, complex infrastructure and complex logistics bring to customers crushing operations, and truly provide customers with efficient and low-cost project operation hardware facilities . Eastman mobile tyre crusher has been successfully applied to mine crushing projects at home and abroad and plays an important role.<>

Ball mill is a commonly used and efficient grinding equipment. It is suitable for grinding various ores such as iron ore, gold ore, gold ore and lead-zinc ore in metal beneficiation, and is used to grind the ore to below 0.075mm for subsequent beneficiation processes. According to different ways of discharging, it can be divided into grid type and overflow type. The grinding method can be divided into dry and wet grinding methods.<>

Spiral classifier is a kind of equipment for mechanical classification based on the principle that the solid particles have different specific gravity, so the speed of precipitation in the liquid is different. It can filter the powder ground out of the mill, and then screw the coarse material into the feed port of the mill using a spiral blade, and discharge the filtered fine material from the overflow pipe.<>

The SF series flotation machine can suck air and pulp by itself. The tank body is forward inclined, which is conducive to the front return of the foam; the double-blade impeller has a good stirring effect on the coarse sand at the bottom.The BF series flotation machine is an improved version of the SF flotation machine, which is mainly used for the separation of minerals with a large proportion such as iron ore.<>

The dryer is a commonly used equipment after the mine beneficiation. The drying drum adopts the principle of the drum forward and reverse to achieve the non-winding effect of the dried items, so that the moisture in the material can be removed.<>