Magnetic Separator FAQ
Straight answers to the questions buyers ask before they order. For material-specific questions see kaolin, feldspar, quartz, ceramics and lithium battery.
General questions
What is an electromagnetic slurry separator?
It is a wet high-gradient magnetic separator (HGMS) that pumps a mineral or material slurry through a magnetized matrix. Fine iron and weakly magnetic impurities stick to the matrix and the clean slurry flows out. The matrix is then flushed while the magnet is switched off.
Which materials can PTMS separators purify?
Kaolin, potassium and sodium feldspar, quartz stone, quartz sand and silica sand, ceramic glaze and body slurry, bentonite, and lithium battery cathode and anode materials (lithium cobalt oxide, lithium manganate, lithium iron phosphate, ternary materials, graphite). Our separators are also used in chemical, food, pharmaceutical and hardware lines.
How do I choose between the 3A89, 7A190, 11A250 and 20A400 slurry separators?
The last number is the bore (magnetic cavity) diameter in millimetres, so larger models handle more slurry per hour. As a published reference point on our wet slurry line, the 7A160 Wet Magnet is rated about 10–30 m³/h for slurry below 40 mesh. Final model choice depends on solids content, particle size and target iron level, so we confirm it after a free sample test.
What magnetic field strength do PTMS machines reach?
It depends on the machine type. Published figures include about 30,000 GS theoretical field strength for the 7A160 Wet Magnet, 18,000–30,000 GS in the working cavity of the electromagnetic dry powder machine, 2.5 T for the PT20A600 dry powder separator, and up to 12,000 Gauss on the surface of a 1-inch NdFeB magnetic bar. We match field strength and gradient to your material after the sample test.
Water-cooled, oil-cooled or stainless steel: which do I need?
Water-cooled and oil-cooled coils keep the field stable during continuous operation. Full stainless steel construction is used where corrosion or product contamination matters, for example lithium battery materials and food-grade applications.
Dry or wet magnetic separation: which should I choose?
Dry separation suits free-flowing powders such as battery materials, quartz powder and other mineral powders. Wet separation suits slurries and glazes such as kaolin, feldspar and ceramic slip. We advise based on your material and process.
How do I choose between an electromagnetic and a permanent magnetic separator?
Electromagnetic separators use a powered coil to build a strong, adjustable field. They suit fine or weakly magnetic iron and lines where the field must switch off for automatic discharge. Permanent magnet units need no power and keep running cost low, which fits coarse, free-flowing material with a light iron load.
Can a PTMS separator be connected to my existing production line?
Yes. We design in-line pipe, drawer, rotary and U-type units that drop into existing pipelines with no extra floor space.
Can you customize a model for my material?
Yes. Field strength, coil cooling, throughput and layout are engineered to your feed size, capacity and target purity.
Can I test my material before buying?
Yes. Send 5–10 kg of your material to our factory at No. 9, Building 2, Shijin Industrial Park, Keyun North Road, Shishan Town, Nanhai District, Foshan, Guangdong, China. We test it free of charge and deliver a report within 5 days of receiving your sample, showing the iron removed and the achievable result.
How much sample do you need, and how long does the test take?
5–10 kg of your material is enough for the free sample test. We deliver the test report within 5 days of receiving your sample.
How low can your separator bring the iron content?
It depends on your feed material and the model. Send us a sample and we run a free test, then report the actual Fe reduction your line can expect. We do not quote numbers without a test.
What certifications do you hold?
Our separators are CE certified and backed by technical patents. Ask us for the specific certificates for your market.
Do you supply overseas customers?
Yes. We export to Southeast Asia, India, Africa and the European Union, with installation guidance, English documentation, remote technical support and on-site service by our engineers.
Can you deliver to African ports such as Lagos, Durban, Dar es Salaam and Mombasa?
Yes. Units are shipped to major African ports with export packing in wooden crates or framed steel skids with moisture-proof wrapping, and ocean booking through experienced freight forwarders. We can also advise on import documentation.
Can I visit your factory or arrange a third-party inspection?
Yes. We welcome factory visits and can arrange a third-party inspection, such as SGS or your appointed auditor, before production or before shipment.
What payment terms do you accept?
Common international methods such as T/T and L/C, typically a deposit to start production and the balance before shipment. Exact terms are confirmed in the proforma invoice.
What quality checks and after-sales service do you provide?
Every unit runs a 24-hour burn-in (aging) test before shipment. After delivery we provide installation guidance, operator training, remote support and on-site service, with field engineers able to reach your plant within 72 hours.
Do you stock spare parts?
Yes. Coils, matrices and IGBT/diode power modules are stocked so your separator can be restored to full capacity quickly.
What information do you need for an accurate quotation?
Your material type, particle size (mesh or mm), throughput (t/h or m³/h), solids content for slurries, current iron content and target, and destination port or country. A sample for testing lets us confirm the configuration before the final offer.
How do I get a quote?
Email [email protected] or WhatsApp +86 139 2990 7491 with your material, capacity, solids content and target iron level. We usually return a matched model and price within 24 hours.
Can PTMS dry powder electromagnetic separators be installed in series or parallel?
Yes. The PTMS electromagnetic dry powder machine can run as a single unit, or several units can be connected in series to push iron removal further, or in parallel to raise processing capacity. Each unit is PLC-controlled and completes excitation, feeding and iron discharge automatically, and one iron-cleaning cycle takes about 10 seconds. The machine vibrates during operation and monitors temperature to help prevent powder blocking, which suits fine powders such as quartz powder and feldspar powder. How many units and which layout your line needs depends on your powder and target iron level, so we confirm it with a free 5–10 kg sample test, reported within 5 days.
What is the difference between a vertical ring high gradient magnetic separator and an electromagnetic slurry separator?
A vertical ring high gradient magnetic separator works continuously: its vertical ring keeps rotating, captured magnetic material is washed out in the reverse direction, and a high-frequency vibration mechanism helps stop the magnetic medium from blocking. It suits weakly magnetic minerals in non-metallic ores. An electromagnetic slurry separator works in cycles: slurry passes through a magnetized matrix, then the valves close, the field switches off and the matrix is flushed to discharge the iron, fully automatically. It is widely used for fine iron removal from kaolin, feldspar and ceramic glaze slurry. The right choice depends on your ore, particle size and tonnage, so we recommend it after a free sample test.
How do you remove iron from lithium battery electrode slurry?
Electrode slurry is cleaned with pipeline or wet electromagnetic separators installed in the slurry line, as one stage of a multi-stage de-ironing plan that also covers raw materials and powders. PTMS supplies U-type, pipeline and rotary separators for lithium battery material slurry, with all-stainless-steel versions where product contamination matters. Iron in slurry often comes from worn milling media and from corrosion in slurry tanks and pipes, so the separator is placed downstream of those sources. The right model depends on your slurry, solids content and flow rate. Send us a sample for a free test, or WhatsApp +86 139 2990 7491 to discuss your line.
Why use a permanent magnetic separator before an electromagnetic slurry separator on a feldspar line?
Because the two machines remove different kinds of iron, and splitting the job protects the fine-iron stage. On a conventional wet feldspar line, a permanent magnetic separator first takes out strongly magnetic material. The electromagnetic slurry separator then removes the fine and weakly magnetic impurities, such as iron minerals, biotite, amphibole and tourmaline, which need a high-intensity field. This keeps the electromagnetic matrix from loading up with coarse iron. PTMS feldspar separators are used for both potassium and sodium feldspar. We confirm the stages for your ore with a free 5–10 kg sample test, reported within 5 days.
Where should the magnetic separator be installed in a ceramic glaze and slip line?
Install the electromagnetic separator after the glaze or body slurry has been prepared and sieved, and before the slurry goes to storage or production. Iron particles left in glaze and slip show up as black spots after firing, so this is the last point to catch them. Raw powders such as kaolin, feldspar, quartz and bentonite can also be cleaned earlier with dry electromagnetic or permanent magnetic separators. In the slurry stage, the ceramic glaze separator captures iron on its matrix, then switches off the field and flushes the matrix automatically. We adapt the sequence to your ceramic plant layout.
How much power does an electromagnetic slurry separator consume?
It depends on the model, and the coil is the main consumer. For the PTMS ceramic glaze separator series, published maximum coil power runs from 1.5 kW (WS1.5K160, 220 V) and 3 kW (WS3K89, 380 V) up to 7 kW, 11 kW and 20 kW (WS20K400, 380 V), with larger magnetic cavities and higher output on the bigger models. Coil power is a maximum rating, and actual consumption depends on the field you run and the duty cycle. For other series, ask for the current datasheet. Tell us your material and capacity, or WhatsApp +86 139 2990 7491, and we will size the most economical model.
How do you remove iron from lithium iron phosphate (LFP) powder?
For dry LFP powder, the usual tool is a magnetic rod box separator. The powder flows from the feed port through layers of permanent magnetic rods, which hold ferromagnetic particles while clean powder leaves through the discharge port. On the PTMS LFP magnetic separator, a 25 mm rod can reach up to 10,000 Gauss, and a cylinder pulls the rods so the captured iron drops out of a separate port without stopping the feed. Rod boxes can be built with 3, 5, 8 or 12 layers. For other battery materials, we can test 5–10 kg of your powder free and report within 5 days.
Which magnetic separator removes iron from quartz sand and powder for glass making?
For dry quartz powder used in glass, a dry electromagnetic powder separator such as the PTMS quartz sand electromagnetic separator is a common choice. It is designed to remove weakly magnetic oxides and flake-like surface contaminants, and the same machine is used for ceramic, glass and refractory raw materials. Whether you need a dry or wet stage depends on whether you process sand or powder, its particle size and your target Fe₂O₃ level, so we match the configuration to your quartz line. Send 5–10 kg for a free sample test with a report within 5 days, or WhatsApp +86 139 2990 7491.
What matrix is used inside an electromagnetic slurry separator for kaolin?
The matrix is the magnetic medium inside the separator's field that actually catches the fine iron, and its type is matched to your slurry. PTMS supplies grids for slurry separators, a matrix designed for kaolin and feldspar, and a customised steel wool matrix. The choice depends on particle size, slurry flow and how fine the iron and mica impurities are. Matrices are also stocked as spare parts, so you can replace them when needed. Send a 5–10 kg kaolin sample and we will recommend the matrix with the test report, within 5 days.
What slurry solids content is suitable for a PTMS electromagnetic slurry separator?
Published reference data for the PTMS-H-B13K89J electromagnetic slurry separator list a slurry solid content of 40–60%, with capacity of at least 500 kg/h. That range suits many kaolin, feldspar and quartz slurry lines, but the workable solids level still depends on particle size, viscosity and your target iron level. Too thick a slurry can slow flow through the matrix; too thin lowers throughput efficiency. We confirm the right solids window for your feed with a free 5–10 kg sample test and report within 5 days, or WhatsApp +86 139 2990 7491.
How do you remove iron from ternary (NMC) cathode powder?
For dry ternary (NMC) cathode powder, PTMS uses dry electromagnetic separators built for lithium battery cathode and anode materials. The lithium cobalt oxide material magnetic separator is also stated as suitable for ternary materials, as well as LCO, lithium manganate, lithium carbonate and LFP, with SUS304 contact parts so the powder is not polluted. Related lithium hosts use water-oil double cooling for continuous duty. The exact layout depends on powder stickiness and your target metallic-iron level. Send 5–10 kg for a free sample test with a report within 5 days, or WhatsApp +86 139 2990 7491.
What does water-and-oil dual cooling mean on a PTMS slurry separator?
Water-and-oil dual cooling means the coil is cooled by forced oil circulation and by water cooling together, so the field stays stable in continuous duty. Published examples include the PTMS-H-B13K89J on the electromagnetic slurry separator series (water + oil dual cooling; working temperature ≤50 °C with cooling water) and the A40K530J mineral slurry iron remover (oil-water dual cooling, 0–40 kW adjustable). Dual cooling is chosen when coil load and duty cycle need more than a single water or oil circuit. We match cooling to your feldspar or mineral line after a free 5–10 kg sample test, reported within 5 days.
What feed particle size suits a PTMS electromagnetic slurry separator?
It depends on the model and your slurry, but a published reference is the 7A160 Wet Magnet, which is specified for iron removal of slurry below about 40 mesh. Coarser feed is usually screened or milled first so the pulp can pass the magnetic cavity and matrix evenly. For kaolin, feldspar or quartz slurry lines we match cavity size and matrix to your actual particle size, solids content and target Fe₂O₃. Send 5–10 kg for a free sample test with a report within 5 days, or message us on WhatsApp +86 139 2990 7491.
Can a magnetic separator remove iron from ceramic body slip, not only glaze?
Yes. PTMS electromagnetic slurry separators are used on ceramic glaze, slip and body lines to catch iron particles that later show as black spots after firing. For wet ceramic pulp, a wet slurry unit such as the ceramic slurry separator or a WS glaze series machine is typical; dry ceramic powders may instead use a dry powder or permanent magnetic stage. Placement is usually after screening and before forming or glazing. See our ceramics application page, or send 5–10 kg for a free test report within 5 days.
How do you remove iron from graphite anode powder?
Graphite anode powder is usually treated dry with an electromagnetic dry powder magnetic separator. The PTMS graphite dry powder separator uses a multi-pole magnetic system so the field in the separation zone stays even, and the field strength can be set to match the raw powder. Non-magnetic graphite passes while ferromagnetic tramp metal is held and discharged. For other lithium battery powders we confirm the setup with a free 5–10 kg sample test and report within 5 days; contact us on WhatsApp +86 139 2990 7491.
How do I choose between the PT3A160, PT20A600, PT25A600 and PT1000 dry powder separators?
Choose by your powder, required capacity and target iron level, confirmed by a sample test. The current PTMS electromagnetic dry powder separator range is PT3A160, PT20A600, PT25A600 and PT1000. Published data is available for the PT20A600: 2.5 T field, 20 kW maximum coil power, 600 mm magnetic cavity, water + oil dual cooling and about 2–4 t/h, depending on the material. The other models are sized per project. For quartz or feldspar powder, send 5–10 kg for a free test with a report within 5 days, or message us on WhatsApp +86 139 2990 7491.
What routine maintenance does an electromagnetic slurry separator need?
Routine maintenance is mainly about keeping the cooling system and the matrix in good condition. Captured iron is washed out by the flushing cycle, so operators mainly check that cooling water flows freely on water-cooled units or that oil level and temperature are normal on oil-cooled units, and inspect the matrix (grids or steel wool) for blockage or wear, replacing it when separation drops. Every PTMS machine runs a 24-hour aging test before delivery, and we provide remote technical support and spare matrix. See our kaolin application page or ask on WhatsApp +86 139 2990 7491.
How is a PTMS magnetic separator installed at an overseas plant?
Installation follows a defined process: we confirm the model from your sample test, agree the process position and connections with your team, and then provide installation guidance and remote technical support during start-up. Each machine completes a 24-hour aging test at our Foshan factory before shipping, so it arrives ready to connect to power, feed and, where needed, cooling water. For ceramic glaze and slip lines, mineral slurry or powder lines, tell us your layout and existing equipment when you request a quote, or contact us on WhatsApp +86 139 2990 7491.
How much can magnetic separation lower Fe₂O₃ in potassium and sodium feldspar?
It depends on how the iron occurs in your ore, so the reduction is measured on your own sample rather than promised in advance. A magnetic separator removes free iron and magnetic iron-bearing minerals such as iron oxides and biotite from the feldspar; iron locked inside the feldspar grains cannot be pulled out magnetically. On wet lines a PTMS feldspar magnetic separator treats the slurry, while dry powder goes to the PT3A160, PT20A600, PT25A600 or PT1000 range. Send 5–10 kg of your potassium or sodium feldspar for a free test: the report, within 5 days, shows Fe₂O₃ before and after separation.
Should lithium battery materials be de-ironed as dry powder or as slurry?
Remove iron at the stage where the material actually flows in your process, and many plants do both. Cathode and anode powders such as LFP, lithium cobalt oxide, lithium manganate and graphite are treated dry in electromagnetic powder separators; our LFP magnetic separator publishes a field strength of 10,000 Gauss. After mixing, the electrode slurry is cleaned in a slurry separator installed in the pipeline before coating. Tell us your material, form and throughput on our lithium battery materials page, or send 5–10 kg for a free test with a report within 5 days.
Which magnetic separator removes iron from quartz used to make quartz stone (engineered stone) slabs?
For quartz stone, iron is usually removed from the quartz sand and quartz powder before they are mixed with resin, because remaining iron can show up as dark specks or a yellowish tint in white slabs. Dry quartz powder goes through an electromagnetic dry separator such as the double-discharge quartz powder separator or the PT3A160, PT20A600, PT25A600 and PT1000 range, while quartz sand is treated with a quartz sand electromagnetic separator. The right model depends on particle size and capacity, so send 5–10 kg for a free test (report within 5 days) or ask on WhatsApp +86 139 2990 7491.
Where should an electromagnetic slurry separator be installed in a kaolin wet processing line?
Install it on the prepared kaolin slurry after grinding and classification, when the slurry can be pumped steadily through the magnetic chamber, and before final bleaching, filter pressing or product storage according to your flowsheet. Published reference data for PTMS electromagnetic slurry separators include about 40–60% solids content on the stainless slurry series model. The high-gradient matrix captures weakly magnetic iron minerals that otherwise hold down brightness. Exact position and model depend on your ore and plant layout. Send 5–10 kg of sample for a free test with a report within 5 days via our kaolin application page, or WhatsApp +86 139 2990 7491.
How do I choose a WS-series model for my ceramic glaze line capacity?
Match your glaze throughput to the published yield range on the electromagnetic separator for ceramic glaze datasheet, then confirm with a sample test. Published WS models cover about 0.2–60 t of production: for example WS3K89 about 0.2–0.5 t, WS7K190 about 5–10 t, WS7K250 and WS11K250 about 10–25 t, and WS20K400 about 20–60 t, with water and oil cooling and magnetic cavity diameters from 89 mm to 400 mm. Magnetic field and coil power are listed per model on that page (about 2–3.5 T and 1.5–20 kW as published). Tell us your glaze type, solids content and required capacity on our ceramics application page, or send 5–10 kg for a free test with a report within 5 days.
What voltage and power supply do PTMS electromagnetic separators need?
It depends on the model, so always check the specific datasheet. Published examples include 380 V input on the PTMS slurry separator series and on most WS ceramic glaze models, 220 V on the small WS1.5K160 glaze unit, and 380 V / 50 A (20 kW maximum coil power) on the PT20A600 dry powder separator. Coil power is adjustable on many slurry units and is the main electrical load. Site supply frequency, cable size and any cooling-water pump load are confirmed when we size the machine for your plant. Share your local voltage with your material details when you request a quote, or ask on WhatsApp +86 139 2990 7491.
What is the A40K530J electromagnetic slurry iron remover used for?
The A40K530J is a high-intensity, high-gradient wet electromagnetic slurry iron remover for fine-particle slurries such as kaolin, potassium and sodium feldspar, quartz, ceramic materials and battery materials. Published data list a 530 mm magnetic cavity, theoretical field strength 0–20,000 GS, excitation power adjustable from 0–40 kW, oil–water dual cooling and 380 V input, with DN100 slurry pipes and counter-current flow (bottom feed, top discharge) through a stainless-steel matrix. Coil power is set to match your material. Confirm the model with a free 5–10 kg sample test; we report within 5 days of receiving the sample. See the A40K530J product page, or WhatsApp +86 139 2990 7491.
Do I need SHMP or STPP before magnetic separation on a kaolin line?
Often yes as a process aid, not as a replacement for the separator. SHMP (sodium hexametaphosphate) and STPP (sodium tripolyphosphate) are dispersants (deflocculants) used on kaolin and ceramic slurry lines. They help liberate and disperse iron-bearing particles so a wet electromagnetic slurry separator can capture them more effectively and support higher whiteness. STPP does not replace magnetic separation—it prepares the slurry; the separator removes the iron. PTMS supplies both chemicals and the slurry separators. Send 5–10 kg of your kaolin for a free sample test with a report within 5 days, or WhatsApp +86 139 2990 7491.
How much cooling water does the PT20A600 dry powder magnetic separator need?
Published datasheet figures for the PT20A600 list recyclable cooling water of about 5–8 m³, together with dual cooling (water + oil), a 2.5 T magnetic field, 380 V / 50 A supply, 20 kW maximum coil power, a 600 mm magnetic cavity and about 2–4 t/h output depending on the material. Cooling keeps the coil stable in continuous dry-powder duty on quartz, feldspar and similar powders. Other models in the current range—PT3A160, PT25A600 and PT1000—are sized per project. Confirm your layout with a free 5–10 kg sample test; we report within 5 days. See the dry powder separator series, or WhatsApp +86 139 2990 7491.
Is a higher magnetic field strength always better for iron removal?
Not necessarily: the best result comes from matching field strength and gradient to your material, not from the highest number. How the iron occurs, particle size, slurry solids, flow rate and the matrix inside the cavity all affect what a separator captures. Iron locked inside mineral grains cannot be removed magnetically at any field strength, and a stronger electromagnetic field also means more coil power and cooling. Published references include 2.5 T for the PT20A600 dry powder separator and about 30,000 GS theoretical for the 7A160 Wet Magnet. Results vary by ore, so send 5–10 kg of your feldspar, kaolin or quartz for a free pilot test; the report within 5 days shows the field setting that works.
How do you remove iron from lithium cobalt oxide (LCO) and lithium manganate (LMO) cathode powder?
LCO and LMO cathode powders are usually de-ironed dry, in an electromagnetic powder separator. On the PTMS lithium cobalt oxide material magnetic separator, the powder passes a special medium net with a micron-class wear-resistant coating that keeps the material flowing and protects its properties. During iron discharge the medium net demagnetizes quickly with no residual magnetism, so captured magnetic particles are flushed out cleanly. Forced oil cooling plus secondary water cooling supports long running, with a published operating temperature of no more than 55 °C. See also the lithium manganate separator. We can test 5–10 kg of your powder free and report within 5 days.
How are PTMS magnetic separators packed and shipped for export?
Each machine is packed for ocean freight after its 24-hour burn-in test at our Foshan factory. Export packing uses wooden crates or framed steel skids with moisture-proof wrapping, and ocean booking is arranged through experienced freight forwarders. We can also advise on import documentation for your country. Before you order, a free 5–10 kg sample test (report within 5 days) confirms the right model, and after delivery we provide installation guidance and remote support. To discuss shipping to your port, contact [email protected] or WhatsApp +86 13929907491, or see how we support overseas ceramic and mineral plants.
When is the A65K750J electromagnetic slurry iron remover used?
The A65K750J is used for high-intensity iron removal from fine-particle slurries such as kaolin, potassium and sodium feldspar and quartz sand. Compared with the A40K530J (530 mm bore, 0–40 kW), it has a 750 mm magnetic cavity, a theoretical field of 0–20,000 GS, adjustable excitation power of 0–65 kW at 380 V, oil cooling and DN150 slurry connections, and weighs about 11 t. It captures weakly magnetic oxides, rust flakes and other iron contaminants. Throughput depends on your material, so we confirm sizing with a free 5–10 kg pilot test, reported within 5 days of receiving the sample. See the A65K750J page.
Can PTMS supply a filter press and vibrating screen together with the magnetic separator?
Yes. Besides magnetic separators, PTMS supplies processing equipment for mineral and ceramic lines, including the PTMS-1200-3S three-deck vibratory sieve and the PTMS-FP-1250 high-pressure membrane filter press. The sieve grades dry powders and granules before or after magnetic separation and has 304 stainless steel contact parts. The filter press dewaters mineral and ceramic slurry, with feed pressure up to 1.6 MPa, squeeze pressure up to 2.0 MPa, 50 membrane plus 50 chamber plates and PLC control. Capacity depends on your line, so send your flow rate and material details for a matched layout. See the membrane filter press and vibratory sieve pages, or WhatsApp +86 13929907491.
Can PTMS separators remove iron from activated carbon powder?
Yes. The Activated Carbon Magnetic Separator is a dry electromagnetic powder machine for carbon materials used in lithium battery production, alongside graphite, LCO, LMO and LFP. It is a single-cylinder dry-type strong magnetic separator with a multi-pole magnetic system and a large wrap angle, and its field strength is designed around the properties of your powder; some versions add a vibration device that improves iron removal and makes iron discharge easier. In the current range, the PT20A600 has published data (2.5 T, 20 kW, 600 mm cavity, 2–4 t/h). We confirm the setup with a free 5–10 kg pilot test, reported within 5 days of receiving the sample.
How should I prepare and send a sample for the free pilot test?
Send 5–10 kg of the same material you will process, in sealed, double-bagged packaging labelled with the material type and your company name. Slurry can be sent as dried powder or as slurry in leak-proof containers; dry powder or sand should be sent as it leaves your current line. Tell us the current Fe₂O₃ or whiteness, the target you need, the particle size and your planned capacity, so we test under realistic conditions. The free pilot test report is issued within 5 days of receiving the sample and is the basis for model selection. Results vary by ore and material. Arrange shipping details with us on WhatsApp +86 13929907491 or via the contact page.
Do PTMS electromagnetic separators need an operator on duty during production?
No full-time operator is needed for the separation cycle itself. PTMS electromagnetic separators are PLC-controlled: excitation, feeding and iron discharge run automatically, and on the Electromagnetic Dry Powder Machine one iron-cleaning cycle takes about 10 seconds. The machine vibrates during work to help prevent material blocking. Staff still need to check feed, cooling and alarms during routine rounds and follow the maintenance plan. Cycle timing is set for your material after a free 5–10 kg pilot test, reported within 5 days of receiving the sample.
Does residual magnetism stay in the matrix after the coil is switched off on a glaze separator?
No. On the Electromagnetic Magnetic Separator for Ceramic Glaze, the mesh pieces are made of special materials, so there is no remanence after the exciting coil is switched off. That lets captured iron release easily: it is removed by vibration and high-pressure water flushing, the matrix is rinsed thoroughly with no residue, and the whole discharge runs automatically without manual operation. This keeps the matrix clean for the next cycle on glaze and body slip lines. Send a free 5–10 kg glaze or slip sample for a pilot test, reported within 5 days of receiving it.
What does counter-current (bottom feed, top discharge) mean on a PTMS electromagnetic slurry separator?
Counter-current means the slurry is fed at the bottom of the magnetic cavity and leaves at the top, so it travels against the natural settling of denser iron particles while it passes through the magnetized stainless-steel matrix. Published examples include the A40K530J (530 mm cavity), the A65K750J (750 mm cavity) and the stainless slurry series model with an 89 mm chamber. This layout is used on kaolin, feldspar and quartz slurry lines to improve contact with the high-gradient matrix. Sizing still depends on your solids content and flow, so send 5–10 kg for a free pilot test; we report within 5 days of receiving the sample.
Does magnetic separation change the particle size of lithium battery cathode or anode powder?
No. A PTMS dry electromagnetic separator does not grind, crush or mill the powder; cathode and anode powders such as LCO, LMO, LFP and graphite flow through a magnetized medium that captures magnetic particles while the host powder keeps its particle size distribution. On the lithium cobalt oxide material magnetic separator, a special medium net with a micron-class wear-resistant coating is used so the material flows smoothly and its properties are protected. All-stainless-steel versions are available where contamination control matters. Confirm the setup for your powder with a free 5–10 kg pilot test on our lithium battery materials page; the report is issued within 5 days of receiving the sample.
How much do PTMS ceramic glaze magnetic separators weigh?
Host weight depends on the WS model and is published on the Electromagnetic Magnetic Separator for Ceramic Glaze page. Published figures run from about 150 kg for the small WS3K89 (89 mm cavity, about 0.2–0.5 t yield) and 180 kg for the WS1.5K160, through about 510–1,210 kg for mid-size units such as WS7K190, WS7K250/WS7K300 and WS11K250, up to about 3,000 kg for the WS20K400 (400 mm cavity, about 20–60 t yield). Overall dimensions are listed per model on that datasheet so you can plan floor loading and layout on a ceramic glaze or slip line. We confirm the model after a free 5–10 kg glaze or slip pilot test, reported within 5 days of receiving the sample.
What is the 40A600 used for on a lithium battery electrode slurry line?
Buyers who ask for a 40A600 usually mean the electrode slurry stage on a lithium battery coating line. PTMS cleans that slurry with U-type, pipeline and rotary separators installed in the slurry pipeline, with all-stainless-steel versions where contamination control matters. Iron often comes from worn milling media and from corrosion in slurry tanks and pipes, so the separator sits downstream of those sources as one step in a multi-stage plan that also covers raw powders. Model selection depends on your slurry, solids content and flow. Tell us your line on our lithium battery materials page, or send 5–10 kg for a free pilot test; we report within 5 days of receiving the sample. WhatsApp +86 139 2990 7491.
How is captured iron flushed from a PTMS electromagnetic slurry separator?
Iron discharge on a PTMS electromagnetic slurry separator runs automatically. After the slurry has passed, the inlet and outlet valves close, residual slurry drains through the back-slurry valve, the magnetic field is switched off, and captured iron is released from the matrix by air ejection and high-pressure water flushing. The meshes use special materials with no remanence after the coil is disconnected, so cleaning is thorough without manual scraping. The sequence is described on the electromagnetic slurry separator series page and is used on kaolin, feldspar and quartz slurry lines. Confirm cavity size and cycle settings with a free 5–10 kg pilot test; we report within 5 days of receiving the sample.
What magnetic cavity diameters are published for PTMS ceramic glaze separators?
Published WS ceramic glaze models on the Electromagnetic Magnetic Separator for Ceramic Glaze page list magnetic cavity diameters from 89 mm (WS3K89) through 160, 190, 250 and 300 mm up to 400 mm (WS20K400). Larger cavities handle higher glaze or slip throughput: published yields run from about 0.2–0.5 t on the 89 mm unit to about 20–60 t on the 400 mm unit, with mid-size 250–300 mm models around 10–30 t. All listed WS units use water and oil cooling. Choose by your flow and iron target, then confirm on our ceramics page with a free 5–10 kg pilot test; we report within 5 days of receiving the sample.
Can kaolin be de-ironed as a dry powder instead of as a slurry?
Yes, but most kaolin lines remove iron at the wet slurry stage, and that is where PTMS usually recommends it. Kaolin is normally washed, dispersed and classified as a slurry, so an electromagnetic slurry separator fits into the line without extra drying. If your plant produces dry-milled kaolin powder, PTMS electromagnetic dry powder separators are also designed for fine non-metallic minerals such as kaolin, feldspar and quartz, with the field strength configured for the material. Results vary by ore, so we recommend a free 5–10 kg pilot test, with a report within 5 days of receiving the sample. See kaolin iron removal.
Why do PTMS electromagnetic dry powder separators have a vibration device?
The mechanical vibration device improves iron removal and makes it easier to discharge the captured iron. In a PTMS electromagnetic dry powder separator, powder passes through a multi-pole magnetic system with a relatively even flux density across the separation zone, so the material does not have to overcome gravity or feed resistance to be treated. Non-magnetic particles leave the magnetic cylinder under gravity, and vibration keeps fine powder moving and helps the captured iron discharge cleanly. This suits fine quartz and feldspar powders. The field strength is designed for each material, so send 5–10 kg for a free pilot test; the report follows within 5 days.
Permanent magnetic rod box or electromagnetic dry separator: which should I use for battery powder?
Choose by how fine and how weakly magnetic the iron contamination is, and by how much control you need over the field. A permanent magnetic rod box (drawer-type) separator needs no power; its 25 mm rods can reach up to 10,000 Gauss, and a cylinder strips the captured iron without stopping the feed, which suits ferromagnetic contamination in free-flowing powder. An electromagnetic dry powder separator builds a stronger, adjustable field for fine or weakly magnetic iron; the PT20A600 publishes 2.5 T. Results vary by material, so send 5–10 kg of cathode or anode powder for a free test, with a report within 5 days. See lithium battery materials.
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