Application
Magnetic Separators for Lithium Battery Materials
PTMS dry electromagnetic and permanent magnetic separators remove magnetic impurities from lithium battery cathode and anode materials, including lithium cobalt oxide, lithium manganate, lithium carbonate, ternary materials, lithium iron phosphate and graphite.
The problem
- Trace metallic iron in cathode or anode powder can bridge the separator inside a cell, create a local internal short and become a heat source, so it is a safety risk, not just a quality issue.
- Iron enters from worn milling media, corrosion in slurry tanks and pipes, and raw material carry-over, so control works best as several de-ironing stages along the line.
How PTMS solves it
Powder-stage de-ironing uses dry high-gradient electromagnetic separators that pull weakly magnetic particles out of free-flowing powder without adding moisture or changing particle size distribution. Battery-material machines use special medium nets with a wear-resistant coating, water-oil double cooling and fast demagnetization of the medium for clean iron discharge. Slurry-stage units handle the wet side.
Recommended PTMS models
Lithium Cobalt Oxide Material Magnetic SeparatorLithium Battery Material Separators
Lithium Manganate Dry Powder Magnetic SeparatorLithium Battery Material Separators
Lithium Iron Phosphate (LFP) Magnetic SeparatorLithium Battery Material Separators
Graphite Magnetic SeparatorLithium Battery Material Separators
Graphite Dry Powder Magnetic SeparatorLithium Battery Material Separators
Activated Carbon Magnetic SeparatorLithium Battery Material Separators
All Stainless Steel Electromagnetic Dry Powder MachineDry Powder Magnetic Separators
Electromagnetic Dry Powder Magnetic Separator 3A160Dry Powder Magnetic Separators
Electromagnetic Dry Powder MachineElectromagnetic Separators
Semi-Automatic Stainless Steel Magnetic SeparatorHigh Gradient Magnetic Separators
Drawer Type Magnetic SeparatorDrawer Type Magnetic SeparatorsTypical process
- Raw materials Permanent magnetic rod boxes or drawer separators catch tramp iron in incoming powders.
- Powder de-ironing Dry electromagnetic separator (for example the lithium cobalt oxide or graphite machines) removes weakly magnetic particles.
- Slurry de-ironing Pipeline or wet electromagnetic separators clean electrode slurry.
- Powder line protection Stainless steel drawer-type separators, as used in lithium battery production lines, catch fine iron in powders and granules.
Multi-stage de-ironing concept as described by PTMS. Exact positions depend on your process.
Lithium Battery Materials: buyer questions
Which battery materials can PTMS separators handle?
Battery anode and cathode materials including lithium cobalt oxide, lithium manganate, lithium carbonate, ternary materials, lithium iron phosphate, graphite and activated carbon.
Will the separator contaminate my powder?
Battery-material separators use a special medium net with a micron-level wear-resistant coating that lets material flow smoothly and protects the raw material. All-stainless-steel versions are available where contamination matters.
Can the machine run continuously?
Yes. The lithium cobalt oxide separator uses forced oil cooling plus secondary water cooling and is designed for long operation; the published operating temperature is no more than 55 °C.
What capacity can a graphite separator handle?
The published Graphite Magnetic Separator has a 220 mm magnetic cavity and an output of 500–1500 kg/h depending on the stickiness of the powder.
Why is iron removal critical for lithium battery safety?
Metallic particles small enough to pass a screen can bridge the separator in a cell and cause internal short circuits and heat. Cell makers therefore treat magnetic content as a controlled variable.
Can you test my cathode or anode powder first?
Yes. Send a sample and we return a measured iron-reduction result on the same type of equipment you would buy.
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.