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, 2–3.5 T for the dry powder 3K160–20K600 series, 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 sales@powtechina.com 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.
Send us your material. We test it free.
Tell us your material, particle size, capacity and target iron level. We usually reply with a matched model and price within 24 hours.