Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent. View details
Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration, leaching pulp. View details
Wet Drum Magnetic Separators(WLIMS)-CTS (N.B) series is a widely used magnetic separator for iron ore beneficiation.Lots of iron ore plant will installate a batch of WLIMS to concentrate the low grade iron ore.The WLIMS means Wet low intensity magnetic separator,as it just need the low intensity magneic force to concentrate the strong magnetic material-iron ore.
Selection of orifices for bottom spigots to controlpulp level in tank This particular tank design is mainly used for processing of material with particle sizes up to 6 - 8 mm (3 mesh). The pulp density should bemaintained from 30 to 50 % solids by weight with best results normally obtained in the mid range.
Jet water furnished in feed channel (optional)This tank design is suitable for (non-magnetic)particle sizes up to 0,8 mm (20 mesh) and is the most effective separator for cleaning and finishing.Optimum pulp density range is 25 to 35 %solids by weight.
This tank design is particulary suitable for cobbing and roughing of fine to coarse particles up to 3-8 mm(4 mesh) at medium to high densities (30 to 50% solids).. It is excellent for capacity and recovery, butshould not be used as a single unit when highest concentrate grade is required.
Hydraulic capacity. Ferromagnetic recovery is directly related to the flowrate through the separator. As the flowrate increases, the slurry velocity and consequently the fluid drag force increases which tends to detach more magnetite particles from the opposing magnetic field.
Percent solids. The percent solids of the feed directly affects the selectivity of the separation. As the percent solids increases, the slurry becomes more viscous minimizing the effects of the fluid drag to assistin the separation of the silica.
Ferromagnetic content. Any given wet drum magnetic separator has the characteristic of removing a limited amount of ferromagnetics based on the diameter of the drum, peripheral speed, and the magnetic field strength. This is referred to as the magnetic loading.Exceeding the limits of this magnetic loading will result in increased magnetite losses.
The magnetic separation of magnetite and other magnetic minerals is a complex process.During the separation process, each particle is subjected to a number of forces, including gravity,drag, etc.The simplified equation below describes the magnetic force the particles are subjected to:
The magnetic system produces a magnetic flux density mesaured in Tesla or Gauss and a magnetic field gradient (T/mm or G/mm). Generally,smaller pole pitches produce a lower flux density but a higher gradient. The smaller pole pitch normally has a higher magnetic attraction (expressed as B dB / dx) close to the drum which decreases rapidly with the distance away from the drum. Hence, the smaller pole pitch(referred to as high gradient, HG) has a greater ability to pick up finer or less magnetic particles but has a lower throughput capacity when compared to a magnetic assembly with a larger pole pitch.
The heart of the magnetic separator is the magnetic drum assembly which is composed of a stationary magnetic array mounted inside of a non-magnetic drum. During operation, the drum revolves around the magnetic assembly thereby transporting magnetically attracted material on the drum to the area designated for discharge.The drum heads are normally cast from nonmagnetic aluminium alloy and the drum shell is manufactured from non-magnetic stainless steel. Drum shells are normally rubber or stainless steel covered against abrasion.
Right now,Tianli have developed more than thirty series of Tianli brand magnetic separators,Deferrization magnets,and mining equipments,etc.which include hundreds of products with different specifications.Tianli is good reputaion magnet supplier,magnetic separator supplier in china.If you are looking for the quality magnetic separator vendor,magnetic separator distributor,magnetic separatorfactory,or magnetic separator company. Tianli is your good choice.
Since the development of magnetic separators in the last century, magnetic separation has been regarded as an effective method for mineral recovery. With the continuous development of new machines and the continuous improvement of performance, we can now say with certainty that magnetic separation is highly accurate.
The choice of magnetic separator depends on a variety of considerations, the most important of which is the particle size distribution, the magnetic performance distribution of the particles to be separated from each other, and the required machine output.The selected magnetic separator must be suitable for the purpose of use and have sufficient capacity. In order to select the most suitable separator, when inquiring about the separator, conditions like purpose of use, material grain are important to our engineer, as detailed below:Usage (improving purity, collecting valuable magnetic minerals, etc.)Type, composition of raw materialsRaw material granularityMoisture content bulk densityType, shape and particle size of mixed magnetic substanceThe amount of raw materials processed per hour (kg/h, m3/h)Other special conditions
Dry low-intensity magnetic separatorThere are two types of dry low-intensity magnetic separator1. Use suspended magnets, magnetic pulleys and plate, and grate magnets to remove iron and strong magnetic impurities2. The magnetic drum is mainly used to concentrate the valuable components of strong magnetism.
Wet low-intensity magnetic separatorsDrum magnetic separator is currently the most commonly used wet low-intensity magnetic separator. With the advent of ferrite permanent magnets, the concept of electromagnetic drums has been almost completely replaced by permanent magnet-based components. This type of magnetic separator is mainly used for the recovery of heavy media, such as the recovery of magnetite or ferrosilicon used in the separation of heavy media.Concentration of ferromagnetic ores (such as magnetite) is another application of drum magnetic separators. The availability of rare-earth permanent magnetic materials and their ever-increasing availability further expand the applicability of cylindrical magnetic separators to media and even weak magnetic materials.Dry high-intensity magnetic separatorsThe mineral industry has always had a great demand for beneficiation equipment capable of performing coarse and weak magnetic minerals.The development of permanent magnetic materials and the improvement of their magnetic properties are undoubtedly one of the main driving forces for the progress of dry magnetic separation technology.
The magnetic force generated by the magnetic roller separator constructed with the rare earth permanent magnet material exceeds the magnetic force generated by the electromagnetic high-strength magnetic separator.Although the rare earth permanent magnetic field cannot be changed easily, we can optimize the configuration of this type of magnetic roller by reasonably selecting permanent magnetic materials, so as to design a magnetic separator for processing materials of different sizes and different magnetic susceptibility distributions.Wet high-intensity high-gradient magnetic separatorsContinuous wet high-strength high-gradient magnetic separators (WHIMS or HGMS) are designed and manufactured to recover materials that were previously considered to be too fine and too magnetically weak, which greatly expanded the applicability of magnetic separation.Kaolin purification, beneficiation of very weakly magnetic iron ore, titanium oxides, and beach sand are examples of successful applications of high-strength and high-gradient magnetic separators.
High gradient magnetic separatorThe high gradient magnetic separator greatly increases the types of optional minerals and widens the upper and lower particle size limits.Handle occasions where the content of magnetic materials is extremely low and the particle size is very thin. The high-gradient magnetic separator effectively improves the separation rate and recovers valuable minerals, which not only saves a lot of water resources, but also improves the concentration of concentrate slurry and simplifies the process flow.
Zircon ore mining process is the process of remove the impurity and promote the content of zircon. According to the characteristic of raw ore, we design methods of gravity separation, magnetic separation, flotation separation, or combined those methods.
Combination of gravity separation, magnetic separation, flotation separation is applied to the Zircon ore with more associated mineral. As for other kind of zircon ore, we will design appropriate line.
zircon ore consist in titanic iron ore, and associated some heavy mineral like hematite or chromite. At first stage of those raw ore, we will applied gravity separation. For example, concentrating table can separate heavy mineral with other gangue (quartz ore, feldspar ore, black mica, etc.), then other beneficiation method will be used to get the concentrate ore.
in heavy mineral, there is magnetic mineral, like titanic iron ore, chromite, hematite, garnet, black mica, monazite, etc. magnetic separation divided into two methods, dry magnetic separation and wet magnetic separation. Dry magnetic separation required that the selected material have a preprocessing, which included heating curing, classifying, etc. Wet high intensity magnetic separator sort a wider particle size, and particle size limit is up to 20um. Therefore, fine zircon ore often applied wet magnetic separation.
However, zircon ore usually consist many associated mineral. So we combine gravity separation, magnetic separation, and flotation separation and design a more efficient method. In stage of wet treatment, raw ore will apply spiral chute or concentrating table to separate heavy mineral with other gangue (quartz ore, feldspar ore, black mica, etc.). The heavy mineral (rough concentrate) will remove the light mineral through 2~4 times of cleaning. After thickening, dewatering, heating, cooling, the mineral will go through the process of dry treatment. The stage of dry treatment include low intensity magnetic separation, strong magnetic separation, etc.
One of case in Hainan zircon plant, raw ore is beach placer. The main mineral in it is titanic iron ore and zircon ore. There are monazite, rutile, magnetite, tin, trace gold and so on. Zircon cover 4%. we, ording to the features of raw ore, designed process of magnetic-gravity process, which made the good profit.
Sand Washing Machine, Sand Washing Plant, Attrition Scrubber manufacturer / supplier in China, offering Ore Grinding Processing Wet Type Ball Mill, Hydraulic Stone Crushing Machine HP Cone Crusher for Hard Stone, Hard Rock Crusher, Secondary Tertiary Stone Crusher Machine, Cone Crusher and so on.
Sinonine is a high-tech enterprise and a leading mining equipment manufacturers and mining engineering EPC service providers in China, our products and services are sold all over the world. In the field of quartz sand, Sinonine Heavy Industry is committed to the purification of quartz sand and the manufacturing of processing equipment, which integrates scientific research, design, equipment manufacturing, installation and commissioning services. Over the years, we have dedicated to the study of quartz ...
Low-intensity separators are used to treat ferromagnetic materials and some highly paramagnetic minerals.Minerals with ferromagnetic properties have high susceptibility at low applied field strengths and can therefore be concentrated in low intensity (<~0.3T) magnetic separators. For low-intensity drum separators used in the iron ore industry, the standard field, for a separator with ferrite-based magnets, is 0.12 T at a distance of 50 mm from the drum surface. Work has also shown that such separators have maximum field strengths on the drum surface of less than 0.3 T. The principal ferromagnetic mineral concentrated in mineral processing is magnetite (Fe3O4). although hematite (Fe2O3) and siderite Fe2CO3 can be roasted to produce magnetite and hence give good separation in low-intensity machines.
Permanent magnetic drum separators combine the attributes of a high-strength permanent magnetic field and a self-cleaning feature. These separators are effective in treating process streams containing a high percentage of magnetics and can produce a clean magnetic or non-magnetic product. The magnetic drum separator consists of a stationary, shaft-mounted magnetic circuit completely enclosed by a rotating drum. The magnetic circuit is typically comprised of several magnetic poles that span an arc of 120 degrees. When material is introduced to the revolving drum shell (concurrent at the 12 oclock position), the non-magnetic material discharges in a natural trajectory. The magnetic material is attracted to the drum shell by the magnetic circuit and is rotated out of the non-magnetic particle stream. The magnetic material discharges from the drum shell when it is rotated out of the magnetic field.
Permanent magnetic drum separators have undergone significant technological advancements in recent years. The magnetic circuit may consist of one of several designs depending on the application. Circuit design variations include:
The standard magnetic drum configuration consists of series of axial poles configured with an alternating polarity. This type of drum is simple in design and can be effective for low-intensity applications such as the recovery of ferrous metals and magnetite. This configuration typically does not provide a sufficient field strength or gradient for the recovery of paramagnetic minerals at high capacities. A typical axial circuit is shown in Figure 3.
The high-gradient element, as the name implies, is designed to produce a very high field gradient and subsequently a high attractive force. Several identical agitating magnetic poles comprise the element. The poles are placed together minimizing the intervening air gap to produce the high surface gradient. Due to the high gradient, the attractive force is strongest closer to the drum making it most effective when utilized with a relatively low material burden depth on the drum surface and, thus, a lower unit capacity. A high-gradient magnetic circuit is shown in Figure 4.
The interpole-style element utilizes a true bucking magnetic pole or interpole between each main pole. The magnetic field of the bucking element is configured to oppose both of the adjacent main poles resulting in a greater projection of the magnetic field. As a result, the interpole circuit allows for a relatively high material burden depth on the drum surface and thus higher unit capacity or improved separation efficiency. An interpole magnetic circuit configuration is shown in Figure 5.
A second interpole configuration consists of steel pole pieces placed between the magnetic poles. This is commonly termed a salient-pole element. The steel interpoles concentrate the magnetic flux providing a very high magnetic gradient at the drum surface. The magnetic field configuration is similar to the high- gradient type element but with an intensified surface gradient. This configuration offers the strongest field projection of any of the previously described circuits. The salient-pole circuit design is shown in Figure 6.
The magnetic elements described above are axial elements. The magnetic poles run across the width of the drum and are of alternating polarity. Magnetic elements are typically assembled with a minimum of five magnetic poles that span an arc of 110 degrees. (For all practical purposes, an arc of only 80 degrees is required to impart a separation. Non-magnetic particles usually leave the drum surface with a natural trajectory at a point of 60 to 70 degrees from top dead center dependent on the drum speed, particle size, and specific gravity.) The poles have alternating polarity to provide agitation to the magnetic components as they are transferred out of the stream of the non-magnetics. A magnetic particle will tend to rotate 180 degrees as it moves across each pole. This agitation is functional in releasing physically entrapped non-magnetics from the bed of magnetics. Agitating magnetic drums are most effective in collecting fine particles or where the feed contains a high magnetics content.
Dense-medium circuits have been installed in many mineral treatment plants since its original development about thirty years ago. In the intervening period the process has been thoroughly evaluated and many innovations have been introduced. The Heavy Density Cyclone is one of the newer systems which has extended the operating range of this process to 65 mesh size.
Medium recovery is obviously important since any loss is a direct cost against production. In coarse coal dense-medium plants a loss of 1 pound of magnetite per ton is usually acceptable but reduction to pound per ton as has been obtained in some plants.
Efficient cleaning maintains fluidity in the bath and increases sharpness of the coal-waste separation. Most dense-medium systems will tolerate some non-magnetic dilution of the bath but the magnetic separator must be capable of keeping this within workable limits, particularly on difficult coals. In some plants a partial bleed of the operating dense-medium bath is maintained through the magnetic separator to keep it clean.
Operating gravities of dense-medium coal plants are usually low enough so that a straight magnetite bath can be used. The return of a magnetic separator concentrate having 50% or more solids will maintain gravity without need for a thickening device. The use of a drum wiper has permitted the return of a 70% solids concentrate back to the separatory vessel. Operation at a high solids concentrate discharge is recommended since medium cleaning is improved. The colloidal slimes carried over with water are more completely rejected at high solids discharge.
Several types of magnetic separators have been used in magnetic medium recovery.The first magnetic drum separators were electro magnetic types but the development of efficient wet permanent drum separators has resulted in nearly universal acceptance of permanent drums in new plants.
The basic construction of each drum is the same. It consists of a stationary magnet assembly held in a fixed operating position by clamp bearings mounted on the separator support frame. An outer rotating cylinder driven through a sprocket bolted to one of the drum heads carries the magnetic material to the magnetic discharge point.
Normally, extreme cleanliness of the magnetic concentrate is not of prime importance in dense-medium plants but this can be a factor in some coals that separate with difficulty. The concurrent tank, reduced separator loading and in some instances dilution of the feed pulp will improve magnetic cleaning. Recleaning of a primary concentrate would improve cleaning but has not been used in commercial plants.
Magnetic Dewatering Tank is mainly used for fine mineral separation to separate the magnetic particles from the nonmagnetic particles (mineral mud) under the gravity force, magnetic force as well as th
The equipment can improve the grade of magnetic concentrate observably, and recovery of fine particle magnetic minerals effectively, ore dressing performance has achieved international leading level...
Electromagnetic Separator is custom designed equipment for removal of tramp iron from magnetic material. It separates magnetic material and tramp iron effectively with the least or no magnetic material
Magnetic Separator, Air Classifier, Metal Locator manufacturer / supplier in China, offering Mineral Separator Dry Process Three Rollers Permanent Magnetic Separator, 12000 GS Dry Permanent Double Rollers Magnetic Separator, Dry Process Roller Enclosed Permanent Magnetic Separator with Two Rollers and so on.
Weifang Guote Mining Equipment Co., Ltd. is located in weifang city, shandong province qingzhou economic development zone, covers an area of 50000 square meters, registered capital of 63.38 million yuan, is a high-tech enterprises in shandong province, the company has passed ISO9001 quality system certification, the environment system certification, safety management system certification, the European Union CE certification, more than a dozen countries useful invention patents. Has been awarded as the ...
FMS has been in close cooperation with various mines and industries nationwide and international. The state of the art technologies are laid behind wear resistance AF190 rolls of pelletizing plant roller screen with 3 years life time (Availability+) and high recovery magnetic separators (Recovery+). In addition, FMS has known as sole national manufacturer and globally top rated manufacturer of pelletizing roller screen.
Considering experiences of Fakoor Sanat Tehran Co. (FST), and enjoying specialized and qualified groups in design, quality control, planning, manufacturing, R&D, and extensive after-sales services, FMS has acted successfully in providing beneficiation facilities as well as iron ore concentrate essential equipment.
Regarding the mission of FMS, we have been involved in providing solution for beneficiation plants and has achieved a great success in optimizing the design and production methods by creating innovations.
Nowadays, by developing complete engineering, machining, fabrication, and manufacturing departments to design and manufacture customized mineral equipment, we have been the professional manufacturer of drum separator, WHIMS, roller screen/feeder, coated AF190 roll, vibratory screen/feeder and flotation cells to meet demanding conditions of use.
FMS roller screen availability+ series comes enhanced with its unique AF190 roll which introduces maximum screening efficiency with more than 3 years life time. Since, no roller gap adjustment or roller replacement is required, therefore, the equipment is always available with the efficiency a brand new screen.
AF190 rolls enhanced with high wear and corrosion resistant thermal spray coating can easily bears abrasion, sticking material and impact of material flow. 3 years lifetime with consistent working efficiency makes the roller screen available+.
FMS produced more than 1000 of magnetic drum separators (in over 100 plants and process above 50 million tons concentrate yearly) both wet and dry types. All the magnetic drum separators have been developed and optimized in accordance with plant builders and operators requirements in a closed three lateral cooperation between FMS, EPC contractor and Iron ore mining industry.
As the main separation challenge, WHIMS equipment enables to effectively recover low grade ferrous metal such as magnetite tail and hematite, chromite, and manganese ores. It is also successfully implemented for rare earth ore separation issues such like titanium iron ore.
We have comprehensive strength of one-stop EPC service. We can also provide various complete sets of equipment and technical services for ferrous and non-ferrous metal mine, non-metal mine, coal mine, electric power environmental protection industry, chemical and fertilizer industry etc.
Technical department will analyze washability of ore or coal according to mineral elements analysis list or coal washability research report which is provided by customers and preliminary work out feasible beneficiation process, and compare advantages and disadvantages of each process. Then technical and design department will estimate brief quotation and economic benefit analysis for customer according to different process which help customer to analyse and make final decision.
Technical department cooperates with the most famous Chinses university in coal preparation and beneficiation industry such as China University of Mining and Technology and Northeastern University to conduct comprehensive mineral analysis of coal sample and ore sample which is provided by customer. Also operate an laboratory experiment in view of beneficiation method. Experiment result will be writtern into mineral processing experiment report according to industry standard and play a guiding role for the coal preparation plant, dressing plant design, equipment selection and actual production.
On the basis of detailed field investigation, according to the coal or mineral processing test results, we work out the feasibility study report and do comparative analysis of various processes in detail. Then we select the optimal technological process. Technology center and design departments draw on the basis of equipment selection and drawings, respectively. Our aim is never miss any details.
Haiwang Technology Group has won good comment from domestic and foreign customer in product quality and technical service for years. From design drawing to production manufacture and product test, we have strict control on equipment quality to ensure that equipment installation accuracy has reached the standard.
Installation and commissioning is a key link of truly realizing mineral processing test, mine design, equipment manufacture and it is directly relates to whether concentration plant production and standard can be achieved or not. It includes: equipment packing, shipment, site installation and commissioning. Our company has more than one hundred professional engineers which can be dispatched to site and do technical guidance to customers' concentration plant in installation and commissioning.
Personnel training is carried out simultaneously with installation and commissioning in order to save construction time cost for the customer. There are two purposes: first is to let customer's concentration plant put into production as early as possible and bring benefit; second is to let customer train their own technical team to guarantee normal operation of concentration plant.
Production and standard achieved includes: achieve expected recovery rate, reach production capacity which is designed for customer's concentration plant, product quality arrived requirement, every consumption index meets requirement, production cost under effective control, process equipment stable operate. After project, our company will keep supplying technical guidance service for customer.
Wet drum separators are used in magnetic media recovery, purification of solids carried in liquid suspension and in iron ore concentration. Heavy media plants require a wet drum magnetic separator that meets the following criteria:
1. Magnetic separators which recover magnetics contained in feed slurries as efficiently as possible, to reduce the per ton/media consumption of treated product to a minimum. 2. Recovery of magnetic solids in as clean a magnetic concentration as possible, to keep the separating bath at a low viscosity and eliminate misplaced product. 3. A high gravity magnetic discharge to eliminate, in many cases, the need for a densifier. A high gravity concentrate simplifies the plant operation. 4. Trouble free operation with minimum down time, minimum operator attention and minimum maintenance cost.
Con-Current Single Drum Wet Magnetic Separator. This is probably the most commonly used type of wet drum magnetic separator used in heavy media plants today. Tank arrangement is illustrated above. It gives the maximum cleaning of magnetic solids, recirculation of material passing through the wash spray back to the feed, and the highest magnetic solids discharge of the types discussed herein.
Counter-Current Single Drum Wet Magnetic Separator. This configuration is illustrated above. The advantages of this type of separator are maximum magnetic recovery, can tolerate heavy mag- netic loads, is less susceptible to loss of magnetic efficiency at high feed volumes (up to 80 GPM/Ft.), and the magnetic discharge is on the feed side of the separator.
1. Volume of rinse slurry to be handled. 2. Percent of solids in rinse slurry. 3. Percent of magnetics in the feed solids of the rinse slurry. 4. Required magnetic recovery efficiency. 5. Cleanliness required in the magnetic concentrate product.
One of the features of our magnetic separators is its ability to handle widely fluctuating loads. Therefore applications can be fount lying outside the service limits indicated. However, the limits outlined below are basic guide lines which will assure efficient magnetic separator performance. These guide lines will indicate changes that can be made in existing plants to improve media recovery efficiency. Each factor is considered separately, but all factors must be considered jointly for each particular application.
Feed volume should not exceed 75 GPM/Ft. of magnet width on a 30 inch diameter single drum separator. If feed volumes up to 90 GPM/Ft. must be handled, a double drum separator (rougher, scavenger model), in which the primary drum tailings and overflow product are sent to the secondary drum, should be applied. Efficient magnetic recovery cannot be expected at rates beyond 90 GPM/Ft..
The ratio of magnetic to non-magnetic solids cannot be effectively insulated from total percent solids in evaluating magnetic recovery. As a general rule, the limiting recommended feed solids in a media circuit is 50 percent. Variations of the ratio of magnetic to non-magnetic solids within this solids range can produce many potential feed slurries. The recommended maximum percent solids for a single drum separator is 15% for con-current separators, 20% solids maximum can be tolerated without losing magnetic efficiency. Beyond 20% solids, double drum separators (rougher, scavenger) are recommended.
In cases where the feed slurry goes above 30% solids, which sometimes occurs when a cyclone is being used to thicken a dilute rinse slurry product, sufficient water should be added in the feed box of the primary separator to bring the solids concentration down to 30% solids. For the discharge rate of a 36 diameter separator, add 20% to the above volume.
The ratio of magnetic to non-magnetic solids will influence the purity of the concentrate obtained. The non-magnetic content tends to deter effective magnetic cleaning when the non-magnetic to magnet ratio exceeds 40% by weight. If the feed pulp is sufficiently dilute (below 20% solids), purity of magnetic concentrate will not be seriously affected at the 40% concentration. When the total solids exceed 20% and when the non-magnetic solids exceeds 40%, it is difficult to obtain a high purity concentrate. This lopsided condition usually occurs in plants using reclaimed water and is alleviated by pulp dilution; or by running the media through the magnetic separator while the plant is not running, thus further rejecting non-magnetics.
A primary limitation in magnetic separator selection influenced by percent solids and percent magnetics in the solids, is the magnetic discharge loading on the magnetic separator. Single drum 30 inch diameter concurrent separators should be limited to 3 TPH of magnetic discharge per foot of magnet width. These magnetic recovery discharge limits are suggested in line with good magnetic recovery efficiencies. Counter-current separators can retain magnetic recovery at a sacrifice in magnetic cleaning at a discharge rate 30 percent higher than the above figures.
A double drum magnetic separator will permit the magnetic discharge to increase to as much as 30% above the indicated single drum rate. Optimum magnetic cleaning and recovery can be obtained with a double drum separator with con-current primary drum separator and with counter-current secondary drum separator.
Sepor, Inc. began business in 1953 with the introduction of the Sepor Microsplitter , a Jones-type Riffle splitter, developed by geologist Oreste Ernie Alessio for his own use in the lab. Sepor grew over the next several decades to offer a complete line of mineral analysis tools, as well as pilot plant equipment for scaled operations.
Redhills, Chennai Plot No. 28 & 29, Athivakkam Main Road, Gomathi Amman Nagar, Annex 7 Extension Redhills, Near R. B. Gothi Jain College For Women, Redhills, Chennai - 600052, Dist. Chennai, Tamil Nadu
The magnetic separator uses the magnetic difference between minerals for sorting, plays the role of improving the grade of ore, purifying solid-liquid materials, and recycling waste. It is the most widely used and highly versatile machine in the industry. One.
Magnetic separators are widely used in mining, wood, kiln, chemical, food and other industries. For mining, the magnetic separator is suitable for wet or dry magnetic separation of manganese ore, magnetite, magnetite, roasted ore, ilmenite, hematite and other materials with a particle size below 50mm. , Non-metallic mines, building materials and other iron removal operations and waste disposal operations
The magnetic separator (take wet permanent magnetic cylinder magnetic separator as an example) is mainly composed of 6 parts: cylinder, magnetic roller, brush roller, magnetic system, tank and transmission part. The cylinder is welded into a cylinder by 2-3mm stainless steel plate, and the end cover is cast aluminum or workpiece, which is connected to the cylinder with stainless steel screws. The motor drives the cylinder, magnet roller and brush roller to rotate through a speed reducer or a step-less speed regulating motor.
After the ore slurry flows into the tank through the ore feed box, the ore particles enter the ore feeding area of the tank in a loose state under the action of the water flow of the ore spray pipe. Under the action of the magnetic field, the magnetic ore particles are magnetically aggregated to form a magnetism group or magnetism chain. The magnetism group or magnetism chain is subjected to a magnetic force in the slurry and moves toward the magnetic pole and is adsorbed on the cylinder . Since the polarities of the magnetic poles are alternately arranged along the direction of rotation of the cylinder and are fixed during operation, the magnet or flux rotates with the cylinder, and the magnetic stirring phenomenon occurs due to the alternating magnetic poles and is mixed. The non-magnetic minerals such as gangue in the magnetism or magnetism chain fall off during the tumbling, and the magnetism or magnetism chain that is eventually attracted to the surface of the cylinder is the concentrate. The concentrate is transferred to the weakest part of the magnetic system edge with the cylinder, and it is discharged into the concentrate tank under the action of the flushing water sprayed from the unloading water pipe, and the non-magnetic or weakly magnetic minerals are left in the slurry and discharged out of the tank with the slurry , That is tailings.
Dry magnetic separator: Separation in the air, mainly used to separate large and coarse particles of strong magnetic ore and fine particles of weak magnetic ore. At present, it is also trying to sort fine ferromagnetic ore;
In addition, it can be classified according to the way the magnetic ore particles are selected, the movement direction of the feed material, the method of discharging the selected products from the selected section, and the structural characteristics of the discharged magnetic products.
The closed circuit through which magnetic flux is concentrated is called a magnetic circuit. The magnetic system of the magnetic separator needs to generate a certain intensity of magnetic field, and most of the magnetic flux in the magnetic field can be concentrated through the separation space. The height, width, radius and number of poles of the magnetic system, the magnetic potential difference between adjacent poles, the pole distance, the width of the pole face width and the pole gap width, the shape of the pole and pole face, and the pole face to the center of the arrangement The distance and so on have no small effect on the magnetic field characteristics.
The magnetic separator shown in the following figure is an example. The magnetic circuit part adopts a five-pole magnetic system. Each magnetic pole is formed by bonding a ferrite and a neodymium-iron-boron permanent magnet block. It is fixed to the magnetic guide plate with a screw through the center hole of the magnetic block On the upper side, the magnetic guide plate is fixed on the shaft of the cylinder through the bracket, the magnetic system is fixed, and the cylinder can rotate. The polarities of the magnetic poles are alternately arranged along the circumference, and the polarities are the same along the axial direction. Outside the magnetic system is a roller made of stainless steel non-magnetically conductive material. The non-magnetically conductive material is used to avoid that magnetic lines of force cannot enter the selected zone through the cylinder and form a magnetic short circuit with the cylinder. The part of the tank close to the magnetic system should also be made of non-magnetic materials, and the rest should be ordinary steel plates or hard plastic plates.
For the permanent magnet separator, the permanent magnet is the most important component, and the quality of the permanent magnet determines its performance characteristics. The permanent magnets of magnetic separators are generally made to a certain size (for example, length width height = 85 65 21 mm), so they are traditionally called permanent magnet blocks or magnetic blocks for short. The permanent magnet materials that can be used in the magnetic system of the magnetic separator include permanent magnet ferrite, aluminum nickel cobalt, iron chromium cobalt and manganese aluminum iron, samarium cobalt permanent magnet materials, and neodymium iron boron permanent magnet materials. At present, the mainstream permanent magnetic materials used in domestic magnetic separation equipment are mainly permanent ferrite (strontium ferrite, barium ferrite), followed by neodymium iron boron permanent magnetic materials.
In the design of the magnetic system, it is necessary to choose which permanent magnetic material to use according to the specific conditions of various aspects. The influencing factors can be summarized into the following aspects:
Magnetic field strength: A constant magnetic field must be generated in the designated workspace. The strength of this magnetic field determines which permanent magnetic material is required. The magnetic properties of NdFeB permanent magnets are much higher than ferrites.
[Improvement]: Magnetic system materials adopt the NdFeB with high magnetic energy product and high coercivity, strong magnetic density and high affect depth; the surface of the cylinder is lined with Xinhai wear-resistant rubber.
Counter flow type permanent magnetic drum separator: slurry flows over against the drum, which create great conditions for cleaning of non magnetic ores. The non magnetic ores approach the clean surface of the drum and the magnetic ores can be absorbed in the strongest magnetic field.
Semi-counter flow type permanent magnetic drum separator: slurry is fed into the cavity from the bottom of the drum, and the magnetic ores fall into the concentrate tank after reaching a certain height, while the non magnetic ores will enter into tailings tank along with slurry in the opposite direction with drum.
Eriez Drum Separators are setting industry standards. The newest advances in magnetic circuitry design, plus over a quarter of a century of experience with solid/liquid separation, are combined in Eriez Wet Magnetic Drum Separators.
Innovations in both magnetic circuit design and materials of construction are applied to Eriez wet drum magnetic separators. This results in maximum magnetite recovery while operating with a minimum amount of wear and maintenance. Refinements in the magnetic circuit, tank design, and drive system have resulted in further improvements in metallurgical performance and operation.
Wet drums in heavy media applications provide continuous recovery of magnetite or ferrosilicon. Eriez has set the industry standards in the heavy media industry developing both the design criteria of the magnetic circuit and the benchmark of operation. The 750 gauss Interpole magnetic element, developed by Eriez, is the most acclaimed magnet of engineering standards in the industry. Eriez has also set the benchmark for wet drum performance. The culmination of various inplant tests has demonstrated that the separators will achieve magnetite recoveries in the 99.9+ percent. (This is based on magnetite losses of less than 1 gram/gallon of nonmagnetic effluent).
Two basic tank styles are offered. The drum rotates in the same direction as the slurry flow in the concurrent tank style. The slurry enters the feedbox and is channeled underneath the submerged drum. The slurry then flows into the magnetic field generated by the drum. The magnetite is attracted by the magnetic field, collected on the drum surface, and rotated out of the slurry flow. This tank style results in a very clean magnetic product.
The counterrotation tank style is preferred for heavy media applications. The drum rotates against the slurry flow in the counterrotation tank style. The slurry enters the feedbox and flows directly into the magnetic field generated by the drum. The magnetite is attracted by the magnetic field, collected on the drum surface, and rotated out of the slurry flow. Any magnetite that is not immediately collected will pass through to a magnetic scavenging zone. The short path that the magnetic material must be conveyed between the feed entry point and the magnetics discharge lip, combined with the magnetic scavenging zone, results in high magnetite recoveries.
Wet drum magnetic separators are the most vital part of the upgrading process in magnetite concentration. The upgrading of primary magnetite is always accomplished with wet drum separators. Mill feed is typically upgraded to 65+ percent magnetic iron using a series of wet drum magnetic separators. The number of magnetic separation stages required to upgrade the ore is dependent on the magnetite content and the liberation characteristics of the ore.
The Eriez Wet Drum Magnetic Separators is engineered and fabricated to provide reliable operation in demanding applications. The separator is designed for the continuous treatment of coarse milled ore providing a high level of availability. The tank and drum are fabricated from heavy gauge stainless steel with wear plate in impact areas. Wear areas are protected with hot vulcanized rubber. The drum utilizes heavyduty spherical roller bearings with a B10 life of 100,000+ hours. The drive system utilizes a Mill and Chemical Duty motor coupled to a shaft mounted gear reducer complete with Taconite Seals.
The feed enters the separator at the bottom of the tank and the drum rotates in the same direction as the slurry flow. This tank also has a scavenging zone. The nonmagnetics must migrate through the magnetic field to a full width overflow. This design, with the full width overflow, allows the tank to be selfleveling. There are no tailings spigots that must be adjusted to match the flow of the separator feed. This design is most effective for producing a clean magnetite concentrate. The magnetic element should incorporate several agitating magnetic poles to provide a high degree of cleaning. Since the finisher feed consists of fairly well liberated magnetite, extreme magnetic field strengths are not required for collection.