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mineral magnetic separators in nigeria

magnetic disc separators supplied to nigeria - euro bulk systems

magnetic disc separators supplied to nigeria - euro bulk systems

A Nigerian mineral processor is installing two magnetic disc separators to separate individual minerals in a Coltan plant. This latest export project reflects Buntings position as a recognised global leader for the design, manufacture, and supply of high-intensity magnetic separators for mineral processing. The origins of the magnetic disc separator date back to the early 1900s, with subsequent design improvements following advances in material and manufacturing technology.

The Nigerian mineral processor first contacted Bunting after viewing previously supplied magnetic disc separators operating successfully in other local Coltan processing plants. Following a review of the project specification and subsequent recommendations by Buntings mineral application engineers, the Nigerian processor ordered two model MDS 3-375 magnetic disc separators.

Coltan (an abbreviation for columbite-tantalites) is a dull black metallic ore that includes the minerals columbite and tantalite. Tantalum is extracted from tantalite for capacitors used in mobile phones, personal computers, and electronics. Columbite is a source of niobium, which is used in superconducting materials as well as in the nuclear, electronics, optics, and electronics sectors.

In operation, an even layer of approximately 500kg/h of Coltan raw mineral feeds via a vibratory feeder onto the Magnetic Disc Separator's 375mm wide belt. The monolayer of material initially passes under a permanent ferrite Plate Magnet, suspended at 75mm above the belt, which captures strongly magnetic particles. The Coltan then feeds under a series of three (3) individual spinning high-intensity electromagnetic discs, each generating different magnetic field intensities and positioned at an increasingly lower suspension height above the conveyor. The magnetic intensity of each electromagnetic disc increases along the length of the conveyor, starting at approximately 10,000 Gauss (1 Tesla) and ending with 23,000 Gauss (2.3 Tesla).

As the Coltan mineral mix passes under the rotating magnetic disc, magnetically susceptible particles lift and deposit into a discharge chute to the side of the conveyor. Each magnetic disc stage focuses on a particular magnetic mineral including tantalite, tin, and columbite.

Our superior magnetic disc separator design is exceptionally popular with Coltan processors due to the ability to vary the magnetic field and the manufacturing quality, explained Adrian Coleman, the general manager of Bunting-Redditch. This latest project is particularly important, resulting from seeing our equipment successfully working in another Coltan installation: the perfect recommendation.

the history of the development of the magnetic separators - minerallurgy

the history of the development of the magnetic separators - minerallurgy

The application of magnetic separation techniques have been largely developed and applied for specific purposes for example, in mineral beneficiation and recovery as a means of eradicating pollution and in recycling applications (Dahe, 2004).

Since it is difficult and costly to treat ultra-fines and slimes by conventional methods such as gravity and flotation processes, it was necessary to continue to investigate the feasibility of new magnetic separation techniques (Arol and Aydogan, 2004). This is especially so for complex mineral compositions as the iron impurities are often locked within non-metallic ores and minerals, such as kaolin, feldspar and quartz which reduce the commercial values of these ores.

Magnetic separation is also favoured due to its simple design and operation, renewability and its low cost (Newns and Pascoe, 2002; Jiao et ai., 2007; Chen et ai., 2012). It is thus to review its development history.

Numerous magnetic separation techniques have been developed over the years to meet the requirements of the mineral processing industry, with the available equipment having its own benefits and limitations.

The selection of a separator is based on the susceptibility difference of particles within a material, the magnitude of the magnetic field generated within the separator, the desired product quality, material throughput and design configuration of the equipment for beneficiating different ores.

The fact that materials experience different forces in the presence of magnetic field gradients, is responsible for the physical separation of the components and mixtures under an applied external field (Svoboda and Fujita, 2003; Joseph et al., 2010). For example, iron being a paramagnetic material will be separated from its associated diamagnetic gangues phases (Chakravorty, 1989; Dahe, 1998; Zheng and Dahe, 2003; Dahe, 2004; Dobbins et al., 2009; Angadi et al., 2012).

Magnetic separators are grouped into either low intensity or high intensity, and can be either dry or wet operational types (Svoboda, 1987; Dobbins et al., 2007 and Joseph et al., 2010, Chakravorty, 1989).

In general, the view within industry is to reduce operational costs thus the wet process is more favourable in the early stages of the flow-sheet as a means for reducing both the drying and storage costs (Svoboda 1987; Chakravorty, 1989; Dahe, 1998; Zheng and Dahe, 2003; Svoboda 2003; Dahe, 2004; Dobbins et ai., 2007; Dobbins and Sherrell, 2009, Angadi et al., 2012).

The dry magnetic separators are used for beneficiating coarse and highly susceptible mineral particles. They are also used for removing tramp iron and magnetic impurities, concentrating highly susceptible magnetic values and in a cleaning stage for a variety of minerals (Svoboda, 1987; Svoboda and Fujita, 2003; Dobbins et al., 2009; Chen et ai., 2012; Angadi et al., 2012).

The different types of dry separators include the high intensity roller and drum type magnetic separators. The roIler type separators are of magnitude between 5% and 10% higher in magnetic field, they offer better separation efficiencies at low costs per ton compared to their drum type counterpart (Arvidson and Henderson, 1996). The commercial drum separators can treat up to 8 mm size fraction at feed rates of over 150 tlhr (Chakravorty, 1989).

The main operational limitation experienced by the dry magnetic separators is that the feeds are commonly wet ground and have to be completely dry prior to processing which means additional operational cost. In this case, separation efficiency at fine sizes to reduced and requires high magnetic field intensity and monolayer feeding for effective separation.

The magnets as the source of the magnetic field are best operated at ambient temperatures due to their sensitivity to high temperatures (Arvidson and Henderson, 1996). At elevated temperatures of 120C to 150 C, which is normally experienced the dry approach, the magnets tend to lose their magnetism and a cooling system may be required in order to prevent overheating and to maintain an efficient separation. This is also an added operational cost (Arvidson and Henderson, 1996; Dobbins et al., 2009).

The generation of dust during dry processing is also a major setback meaning that some efforts for dust pollution control will be required. Finally there is the need for sufficiently high magnetic field to achieve separation (Dobbins et al., 2009).

Cross-belt magnetic separators are used in the beneficiation of moderate magnetically susceptible ores, and they consist of two or more poles of electromagnets as the source of the magnetic field. A continuous cross-belt allows for the magnetic particles to be attached and collected in a separate container. While the conveyor pulls towards its end pulley, the non-magnetic particles are discharged and also collected in a separate container.

For efficient separation, the feed needs to be sized into narrow size ranges and the height of the poles should be adjusted to 2.5 times the coarsest size particles ranging between 75 !lm and 4 mm. The main benefit of this unit is that a single pass of the feed through the separator is sufficient to recover almost all the magnetic particles compared to other dry separators which require several passes (Chakravorty, 1989).

Permanent Roll Magnet (Permroll) uses a Samarium-Cobalt (Sm-Co) and Neodymium-Iron-Boron (Nb-Fe-B) permanent magnet as the source for generating a magnetic field of up to 1.6 Telsa (T), which facilitates separation of economic values from gangue minerals.

The benefit of this equipment is their capability to treat large particle sizes of material up to 25 mm. Energy consumption the by Permroll is low at 10% of the electrical energy required by Induced Roll Magnets (Svoboda 1987; Svoboda and Fujita, 2003).

The limitation of these separators is their low throughputs capacity, the high cost of replacing worn magnets and belts, along with the speed of the belt determining the separation efficiency of the system. The use of a belt affects separation by reducing the magnetic field, magnetic intensity and electrostatic interactions generated by the fine particles attached to the belt (Svoboda, 1987).

Rare Earth Roller (RER) separators are low capacity units when compared to Rare Earth Drum (RED) separators. However they are high in capacity when compared to Induced Roll Magnetic (IRM) separators. They are mostly used in the beneficiation of mineral sands, in multi process stages, for example in the final cleaning and scavenging stages to improve the quality of the product and increase recovery (Dobbins et al., 2007).

They use thin and open designed belts with the aim of minimising the interference with the magnetic force. The open design has limitations in that, fine particles are easily blown off and build up on the belt, thus reducing the belt life and increasing the maintenance cost. In another instant, as the material travels along the belt, there is a possibility of the particles rubbing against each other, causing the particles to be magnetised and attached to the belt.

Separation efficiency can be compromised and can only increase by ensuring that the feed is in a monolayer to prevent compaction which can lead to non-magnetic particles being trapped within the feed bed and fine particle reporting to the bottom of the feed bed (Dobbins and Sherrel, 2009).

Its limitation is that it is generally of low capacity due to the narrow allowable gap size situated between the feed pole and the roll, and also limited to a particle size range of 100 11m to 2 mm (Chakravorty, 1989). Treating particles sizes >2 mm on the IRM will require a much bigger gap size thus reducing magnetic field strength.

The feed material is fed at the top of the equipment in a controlled thin layer by means of a vibrating feeder. The gap between the feed pole and the roll together with the splitter are adjustable and are of great importance for an efficient separation.

In order to achieve good and effective results, the material to be treated must be dry, free-flowing and within the size range of 100 11m to 2 mm. The gap size should be adjusted to approximately 2.5 times the average particle size as with the cross-belt separators (Chakravorty, 1989). With the many operational limitations of the IRM, it is increasingly replaced by rare earth rollers (RER).

A cross-belt magnetic separator was used by AI-Wakeel and EI-Rahman, 2006 in beneficiating iron ore from Egypt. The ore treated was at +53 /Jm size fraction and a reported head grade of 34.30% Fe. An upgrade to 49.85% Fe and a low Fe recovery were obtained. The author reported that a finer grind is required to liberate the locked iron ore mineral in order to meet the commercial grade product specification.

The application of a Permroll separator was used by Alp, 2008 in beneficiating colemanite tailings at +75 /Jm size fraction and a head grade of 31.52% B203 An upgrade to 43.74% B203, and recovery of95.06% with a mass reduction of 31.47% was obtained using only magnetic separation. This was compared to a previous investigation conducted on the same tailings by Ozdag and Bozkurt (1987) where a better B203 recovery of 97.7% was achieved but at a lower grade using a multi stage process consisting of attrition scrubbing/washing.

Dobbins et al. (2007) used an Outotec RED magnetic separator to recover mineral sands and to validate previous results obtained of 70% ilmenite from aeolian tailings. The results showed that a good quality product at 66% ilmenite was produced at the acceptable commercial specification.

In order to improve both grade and recovery of the low magnetic susceptible material, Bhatti et al. (2009) conducted investigations on a low grade chromium ore from Balochistan in Pakistan with a head grade of 28% Cr203. The investigations were carried out under different test parameters including the magnetic field intensity, particle size and feed rate. The results showed that a magnetic field intensity of 4000 Gauss was the optimum and any increase above this point resulted in a reduced product grade. It was noted that, as the particle size was reduced and the feeding rate increased the efficiency of separation was reduced. However, a product grade of 40% Cr203 and 90% Cr203 recovery was obtained.

The industrial use of dry high intensity magnetic separators such as the cross belt, Permroll, RER, RED and fluidised bed are sharply declining due to the difficulties experienced in their operations (Svoboda, 1987; Svoboda and Fujita, 2003; Dobbins et al., 2007 Dobbins et aI., 2009; Chakravorty, 1989). Fine materials are difficult to beneficiate as the result of mechanical entrapment of non-magnetic particles, thus causing inefficient separation, high maintenance and replacement costs (Svoboda, 1987; Chen et al., 2012).

Researchers have noted that better liberation of coal through grinding will improve the efficiency of separation. The difference in the coal magnetic properties has led to various research programmes being conducted in order to increase the magnetic susceptibility mainly for those rich in pyrite prior to magnetic separation.

Microwave energy has been used in treating coal to facilitate the change of FeS2 into a more magnetically susceptible FeS (Zavitsanos et al., 1978; Zavitsanos et al., 1982; Butcher and Rowson 1995; Cicek et ai., 1996). The authors used flash pyrolysis prior to the magnetic separation. The results showed that pyrite was converted into iron sulphides based on the temperature of the pyrolysis test. In addition, the result showed that after beneficiation of the -100 !lm particle size, a reduction of 35% sulphur content was obtained by flash pyrolysis and magnetic separation.

A study on sulphur and ash removal from low-rank lignite coal by low temperature carbonization and dry magnetic separation was investigated by Celik and Yildirim (2000). The result was successful but there was a serious concern regarding air pollution by sulphur during the low-temperature carbonization. There appears to be an improvement in the magnetic susceptibility potential of coal for High Gradient Magnetic Separator (HGMS) beneficiation technique, at least for pyrite removal, but it was found that much work still has to be done to improve this process and to evaluate the technical and economic feasibility of the whole process for coal cleaning.

Wet magnetic separators were introduced as a result of the many limitations faced by dry magnetic separators. The inability of the dry separators to beneficiate high magnetic susceptible minerals such as magnetite more efficiently, at high throughput rates for a very fine size particle, and to separate minerals under high magnetic field intensity, was responsible for the design of the currently available wet high intensity magnetic separators. These separators have shown capabilities of treating various ore types and fine fractions less than 1 mm, for either strong or weakly magnetic minerals.

The benefits of wet separators are that they are robust with high capacity, ease of operation and in addition, they also use an electromagnet as a source for generating the magnetic field or matrixes such as groove plates or filaments for generating disturbance within the magnetic field commonly referred to as high intensity (Corrans et al., 1979; Svoboda, 1987; Chakravorty, 1989; Hearn and Dobbins, 2007).

All WHIMS units operate under the same principles but, they differ in the magnitude of the magnetic field, the type of matrix and in some instances the arrangement of the rotating rotor (Chakravorty, 1989).

The application of a matrix as the point for collecting magnetic particles in WHIMS made a huge impact and improved the magnetic separation process of materials that were previously considered too fine or to have too low magnetic susceptibility. These traditional types of separators came about as a result of Joness idea for a magnetised matrix in the form of steel wool and Frantzs idea of a high magnetic field with the aim of increasing the localised magnetic force (Svoboda and Fujita, 2003).

The simple design is composed of a horizontal rotor with the matrix packed in a chamber and placed between the poles of electromagnets to generate the localised magnetic field gradient. The feed in slurry form is fed onto the matrix, the magnetic particles are collected and attach onto the matrix and the non-magnetic particles pass through the matrix and into a separate container. When the current is switched off, the magnetic particles are released from the matrix and flushed with water to ensure that all particles are collected into a separate container. Based on this idea, many advanced designs came into being (Chakravorty, 1989).

Although traditional WHIMS is relatively easy to operate, for effective separation it is important to use a suitable matrix for the feed under investigation, and an appropriate feed rate, particle size, magnetic field intensity, and location of the feed and wash water.

The matrixes in high intensity separators generate a strong localised magnetic field as high as 104 %, with the selection of the matrix based on the characteristics of the slurry being treated. There are many types of matrixes available; steel wool, groove plates or steel balls or rods to capture the weakly magnetic particles (Svoboda, 1981; Zeng and Dahe, 2003). They serve as the collecting points for magnetically susceptible material and also as a region where the highest magnetic field is experienced, while the gaps facilitate a passage for the removal of the non-magnetic particles (Hearn and Dobbins, 2007). It is also observed that effective separations are achieved at particle sizes> 1 00 ~m (Corrans et ai., 1979 Dobbins and Hearn, 2007).

The many limitations of the traditional WHIMS have resulted in low separation efficiency of very fine size fractions as a result of entrainment, clogging of the matrix and low throughputs, compared to the latest technology of high intensity magnetic separators (Dobbins and Hearn, 2007; Das et ai., 2010). Poor selectivity during separation and the clogging of the matrix has resulted in diminished industrial use.

These limitations drove the development of a vertical magnetic separator (VMS) which was designed in the Czech Republic and later became the foundation for developing the SLon VPHGMS (Zeng and Dahe, 2003; Hearn and Dobbins, 2007).

The improvements on the VMS included a vertical rotor instead of the horizontal one, reverse water flush to keep the matrix clean and a bottom feeder with a mechanism for controlling the velocity of the slurry. This design configuration made it possible to treat finer particles which were considered untreatable or too fine for processing under gravity techniques (Dobbins, 2007).

China made further improvements on the VMS to achieve better separation efficiencies by introducing the SLon VPHGMS. It has a similar design to the VMS but it has an additional feature, a pulsating mechanism that agitates the slurry and keeps particles in suspension to assist in improving the product quality and recovery (Dahe et af., 1998; Zeng and Dahe, 2003; Dahe, 2004).

Another set of separators are the superconducting magnetic separators. These are considered to be of highly advanced technologies which are able to generate high magnetic field strengths of up to 2T. With the initiatives put forward by both Jones and Frantz, many high intensity magnetic separators have been designed and commercialised (Svoboda, 1987, 2003).

Extensive work has been conducted using different wet high intensity magnetic separators. The early successful application of the WHIMS separator was on kaolin purification, iron-ore and beach sand beneficiation (Svoboda and Fujita, 2003). Investigations were conducted for the removal of gangue phases from a low grade iron ore using WHIMS by many researchers. For example, Angadi et af. (2012); Arol, (2004); Jamieson et af. (2006); Dobbins et af. (2007); Das et af. (2010) and Padmanabhan and Sreenivas, (2011) concentrated different ores from their gangue minerals and attained grades suitable for commercial applications. Iron ore with suitable grades for blast furnace application was also recovered from a low grade ore by AI-Wakeel and EI-Rahman, (2006).

The inferior separation efficiency experienced by the high intensity magnetic separator when processing fines was investigated by Chen et af. (2011). These investigations were in contrast to those reported on the influence of key variables such as magnetic field intensity, matrix type and shape and slurry velocity on the performance of the high intensity magnetic separator (Li and Watson, 1995; Newns and Pascoe, 2002). The results showed a higher recovery for finer magnetic particles due to the smaller magnetic leakage factor, higher magnetic induction and no direct contact of feed flow on the magnetic deposits on the vertical magnetic matrix elements of the newly designed separator.

With continuing research on improving the separation efficiencies of the existing high intensity separators, a new separator called the superconducting magnetic separator was used by Li et al. (2011) to beneficiate extremely fine red mud particles at <100 /-lm. The results showed that the ability to separate fine weakly magnetic minerals, and the capability to generate a very high magnitude of magnetic field makes this separator a potentially superior separator to other units.

Investigations into the optimisation of a high intensity magnetic separator to beneficiate scandium (Sc) by removing the Fe contaminant were conducted by Likun and Yun, (2010). The head grade for the material treated was reported to be 48.90 glt Sc, 11.45% Fe. Mineralogical analysis showed that scandium was the major mineral and biotite, tremolite, ilmenite, and tantalite were the dominant gangue mineral phases present.

Ilmenite was separated from the other gangue minerals by using its high specific gravity, and it was removed by a gravity technique. A -37 /-lm sized fraction feed was used and the results showed that a magnetic product containing 62.34% Fe and Sc grade of8.l4 glt with a loss of 0.97% Sc was achievable, and a non-magnetic Sc product with an upgrade to 51.40% Sc was also attained.

Pilot scale investigations were carried out on the same size fraction using the same material and flow-sheet, along with the same low magnetic separator followed by high intensity magnetic separators. The results showed that 315 glt Sc at 78% recovery was achievable and that other rare earth elements which have low magnetic susceptibility could also be concentrated through high intensity magnetic separation.

Fine and super fine bauxite was treated by magnetic separation with the potential to evaluate the occurrence of iron bearing minerals and to verify the possibilities of minimising the iron content of the bauxite by Kahn et al. (2003). The results showed that for bauxite fine and superfine products, Fe203 grades of 8% Fe203 and 6% Fe203, with 53 to 55% of total Ah03 were obtained from fine and superfine bauxite feed, with 19.50% Fe203 and 18.40% Fe203 grades, respectively. The author concluded that without further comminution, potential aluminum recoveries of about 90% by gravity concentration or magnetic separation could be attained.

The separation of gangue from a low grade iron ore using traditional WHIMS (Gaustec G-340) with a capacity of 200 tlhr was conducted by Angadi et af. (2012) to enhance the quality of the low grade ore. A low grade iron ore from Kolkata, India was used with a head grade of 49.27% Fe. The mineralogical report showed that the iron mineral was mainly present in the hematite and goethite phases with quartz and kaolinite as the major gangue mineral phases within the ore. The results showed that an upgrade of up to 62% Fe in the concentrate stream was achievable using WHIMS.

An iron and titanium material containing vanadium as gangue was treated in a SLon VPHGMS (Dobbins et af., 2007). The objective was to remove 17% to 20% gangue in order to improve the product quality of the fine magnetite and titanium. The results reported an upgrade to 47.50% Ti02 and doubling the recovery at the same time. By discarding the majority of the mass by magnetic separation, the SLon VPHGMS technology also showed that it could be used as a waste rejecting stage prior to the flotation process.

Zheng et af. (2003) used the SLon VPHGMS separator in a test in a Qidashan mineral processing plant in China. The aim of the investigation was to meet metallurgical specifications of 66% Fe and reduce the high energy used in the plant. Previous tests with the WHIMS 2000 in the same plant showed that it was only capable of beneficiating up to a grade of 63% Fe, 3% short of meeting the required specifications. The material was then treated by a SLon-1500 and the results showed magnetic products with much higher Fe grades and recoveries, with low Fe losses to the tailings streams. The improved quality product was a result of the pulsating mechanism provided by the SLon VPHGMS, preventing the matrix from clogging. By keeping the matrix clean the particles have more attaching space which increases the recovery.

Mohanty et af. (20I0) conducted a set of experiments on slimes from mines around the Barbil area, eastern India. One set of the experiments comprised of desliming prior to magnetic separation and another test was a direct magnetic separation using traditional WHIMS. The feed used was -150 ~m at a head grade of 58.64% Fe, and was analysed through polished sections at size range of -150+ 1 00 ~m. The result showed that the major phases are hematite with a substantial quantity of goethite. The slimes were then subjected to magnetic separation using Jones WHIMS at various intensities.

The investigation showed that by increasing the magnetic field intensity of the WHIMS, low magnetic susceptible iron minerals were attracted thus reducing the product grade. However, the authors concluded that beneficiation by WHIMS was capable of beneficiating Fe to >61% Fe grade with a high mass yield of -80%. Another investigation was conducted by Srivastava and Kawatra (2009) on a low grade hematite ore from Minnesota in a USA stockpile. Mineralogical investigations on the ore showed that hematite (Fe203), silica (Si02), and manganite (MnO.OH) were present as major phases. The magnetic separation results reported a beneficiation of the feed from 27.30% Fe to 45.24% Fe with a 42.06% Fe recovery for the -25 ~m size fraction. However major Fe losses to the tailings stream were reported, indicating that WHIMS was not entirely efficient in beneficiating this particular ore at this fine size.

magnetic separator for mineral processing - jxsc machine

magnetic separator for mineral processing - jxsc machine

Three discs high intensity dry magnetic separator is a dry type magnetic adjustable separating machine, special for separation minerals such as coltan, tungsten, tantalite, cassiterite, wolframite, ilmenite, rare earth ore, chromite, limonite, columbium and tantalum ores, zircon, rutile, monazite, andalusite, garnet, kyanite, feldspar, quartz and other minerals with magnetic differences and removal of iron in nonmetallic minerals.

3pc high intensity dry magnetic separator consists of four electric magnetic coils, three magnet discs, and under the feeding hopper, theres a small low-intensity magnetic drum, which is used for remove iron sand or other high magnetic intensity minerals. The electric control cabinet section consists of components of control, voltage regulation, rectification, instrument and so on.

The disc belt magnetic separator consists of a single belt upon which the feed is distributed across and is transported slowly underneath a series of four electromagnets, the magnetic fields of which lift the magnetic grains off the belt depending on their susceptibility. Underneath each magnet is a smaller faster moving belt across the main belt at right angles which picks up the magnetic grains and transports them away from the magnetic field to discharge into launders. The gap between the main belt and the magnets becomes progressively smaller until only the non-magnetic grains unaffected by the magnetic fields remain on the main belt and discharge off the end.

Three-disc electromagnetic separator is for a variety of strong magnetic minerals mixed ore separation, according to the difference of magnetic minerals, can achieving efficient separation of minerals can form different intensity magnetic disk by adjusting the excitation current levels, can also be adjusted each level disk and sensing distance between dressing grain is to get different magnetic induction intensity, reaching a one-time separation of various minerals. This device is widely used in ilmenite, monazite, tungsten, tin, tantalum, iron ore and other minerals with magnetic and non-magnetic dry sorting.

The magnetic separator machine can get an extremely high separating efficiency, which could get 4 kinds of high-grade minerals to concentrate at one time.Operations can be adapted to water-lack mines, which is very popular in the unwatered areas.

The three-disc electromagnetic separator is sorting mineral with size less than 2-3mm of weakly magnetic minerals and rare metal ore selection, The moisture of the feeding material should be under 1%. it is a very important mineral processing equipment. Three-disc electromagnetic separator have 2 models: 3PC-500 & 3PC-600, 3PC-500 with magnetic disc diameter of 500mm, while model 3PC-600 is with disc diameter 600mm.

1. This belt magnetic separator could separate four different useful minerals at one time. 2. 4 varieties of final concentrate can be obtained by separation of this Dry Intensified Magnetic Separator. 3. Ta & Nb grade could reach 60% by using our dry magnetic separator. 4.compact structure, stable performance, easy installation, and convenient operation and maintenance. 5.magnetic intensity can be adjustable, also can be used for other mineral concentrations.

3pc disk dry magnetic separator is a dry intensified magnetic separator, special designed for separation of ilmenite, rare earth ore, chromite, tungsten and tin ores, limonite, columbium and tantalum ores, zircon, rutile, monazite, andalusite, garnet, kyanite, feldspar, quartz and other minerals with magnetic differences or removal of iron in nonmetallic minerals.

JXSC establish a professional mineral laboratory for sample testing from 2017, we can do magnetic separation test of sample ores for gold, tin, tungsten, chromite, tantalum-niobium, tantalite, ilmenite, limonite, magnetite, and other magnetic minerals test. Welcome to send your sample ores for our analysis.

JXSC has been providing magnetic separators for mineral processing since 1985, different types of magnetic separators, electromagnetic separator for handling various mineral materials, wet type, dry type, high intensity, weak intensity, etc. Contact us for a convenient separator machine selection service.

magnetic and electrostatic separation | sgs

magnetic and electrostatic separation | sgs

SGS uses mineral separation in situations ranging from small-scale projects to full-scale pilot plants. Our capabilities include wet and dry magnetic separation in both low and high intensity magnetic separations with field strengths up to 25,000 gauss. Our equipment base includes both bench and pilot scale equipment:

Magnetic separation is a well-established separation technique and has become increasingly popular as new equipment on the market enhances the range of separations possible. It is an attractive process choice because of low capital and operating costs and the lack of chemicals to cause environmental concerns.

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