PPb‑level demagnetization safeguards the “safety lifeline” of lithium‑ion battery materials.
Time：
2026-07-20
In the lithium‑ion battery and new‑energy industry, the root causes of many defective products, customer complaints, and safety hazards often lie not in the formulation, but in… Micron-scale magnetic foreign matter 。 As Electric vehicle powertrain Lithium Battery: GB 38031-2025 and Mandatory National Standard for Large-Scale Lithium-Ion Energy Storage: GB 44240-2024 With the official implementation of two new national standards for high‑share markets, lithium‑ion battery safety has been formally elevated to a mandatory national regulation.
During the entire process—grinding, blending, conveying, and sintering—of lithium‑ion battery cathode and anode materials, precursors, and graphite anodes, fine metallic wear debris is readily generated. These weakly magnetic particles are extremely small in size and present at very low concentrations, making them impossible to fully capture with conventional permanent‑magnet equipment.
But even this tiny, seemingly insignificant impurity can directly lead to:
Cell micro‑short circuits, elevated self‑discharge, reduced cycle life, and declining yield of finished products—when severe—can directly jeopardize the delivery of entire batches. oneself Brand reputation.
As the准入 standards for leading battery manufacturers continue to be tightened, PPb Level-based magnetic foreign object control , has long since from “ Bonus points ” Becoming a new energy materials enterprise “ Standard included upon entry ”。
Guangyu Magnetic‑Electrical’s high‑gradient demagnetization equipment, specially designed for lithium‑ion battery applications, is tailored to the processing conditions of new‑energy powders and slurries, precisely addressing the challenge of ultrafine weakly magnetic impurities.
Unlike conventional industrial iron‑removal equipment, we have implemented a comprehensive, multi‑dimensional upgrade tailored to the lithium‑battery industry’s stringent standards:
✅ High-gradient specialty magnetic media for capturing micron-sized weakly magnetic impurities.
For lithium iron phosphate, ternary materials, synthetic graphite, silicon‑carbon anodes, and lithium‑ion battery precursors, it precisely captures ultrafine metal debris, effectively keeping magnetic foreign particles within the industry’s stringent quality standards.
✅ Fully enclosed, dust-free design, compatible with lithium‑battery cleanrooms.
A specialized wear‑resistant and corrosion‑protective coating that eliminates secondary metal contamination, preserves the powder’s intrinsic physicochemical properties, and meets the stringent requirements of new‑energy material production.
✅ Water cooling Oil cooling Constant-temperature operation, supported. 24h Continuous mass production
It addresses issues of excessive temperature rise, performance degradation, and frequent shutdowns during prolonged operation, while ensuring stable, high‑throughput production on lithium‑battery assembly lines.
✅ Fully automatic intelligent demagnetization, with no residual magnetism and no clumping or residue.
Power-off demagnetization, combined with a high-pressure rinsing system, prevents slurry adhesion and powder residue, ensuring consistent and stable material purity across every batch.
Mass-production implementation value:
After several lithium‑battery material companies implemented Guangyu’s magnetic‑electric demagnetization solution, the levels of magnetic contaminants in their materials dropped sharply, cell defect rates fell significantly, and self‑discharge issues improved markedly. The products successfully passed rigorous inspections by downstream battery manufacturers, enhancing their market competitiveness.
Competition in the lithium‑ion battery industry has long since gone beyond capacity and price. Fine-grained impurity control is the core competitive barrier of high-end supply chains. 。
Guangyu Magnetic & Electrical Supports: Lithium Battery Powder / Free sample testing of slurry, customized demagnetization process solutions, turnkey equipment integration, and end-to-end technical support and after-sales coordination.
If you’d like to optimize the demagnetization process on your production line and reduce defect rates, feel free to contact us for sample testing at any time.
# Guangyu Magnetics and Electrics # Lithium-battery demagnetization # New energy materials # Iron removal from lithium iron phosphate # Graphite Anode Purification # Lithium-ion battery equipment # Magnetic Foreign Object Control
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