Lithium-ion Battery Graphite Recycling Process

Process Breakdown:

• Pre-treatment phase：

• Physical Crushing: The battery is disassembled into components such as electrode sheets and casings, which are then crushed into particles by a crushing machine.

• Membrane and Metal Separation: Separating copper foil (anode substrate for lithium batteries) from membrane materials using methods such as screening and magnetic separation.

• Graphite Purification Stage：

• Physical MethodThrough air-stream crushing and high-temperature calcination (removing residual binders and impurities), the graphite crystal structure is restored.

• Chemical MethodThe company utilizes acidic and alkaline solutions to dissolve metal impurities (such as iron and aluminum), followed by washing and drying to obtain high-purity graphite.

• Pioneering TechnologySolvent extraction (dissolving the binder with organic solvents) and microwave-assisted processing (efficiently decomposing impurities).

• RecyclingRefined graphite can be directly used as an anode material for new batteries, or as a filler, refractory material, and more.