Waste lithium battery dismantling and recycling process

Release Time：2024-01-25 Source：Lithium Battery Recycling Machine Share：

        Lithium-ion battery components: positive electrode material, negative electrode material, PVDF, electrolyte, binder and other components. Waste lithium batteries contain a large number of rare metals. If they are discarded randomly, they will cause some pollution to the environment, and the rare metals will be wasted. Lithium-ion batteries can be divided into: NMC, LCO, LFP, etc. The metal content of NMC batteries is: nickel: 22.1%, cobalt: 9.3%, manganese: 10.5%, lithium: 3.9%, copper: 13.3%, aluminium: 12.7% and other metals. It can be seen that the value of waste lithium batteries. Lithium battery recycling machine can be sorted out: black powder, copper, aluminium, iron shell and so on. Achieved resource regeneration.

Waste lithium battery dismantling and recycling equipment process:

        1. Pre-treatment discharge: the waste lithium battery is discharged through the lithium battery discharge equipment. Adopt the way of pinning and rolling to puncture the waste lithium battery, causing the positive and negative electrode short circuit, so as to release the energy quickly. Equipped with discharge cooling box. Rapid cooling, the discharging time is only 40 minutes to complete the complete discharge.

        2. Shredding: After the discharge is completed, the used lithium battery is disassembled and shredded by the anoxic shredding system. The used lithium batteries are broken down into small pieces. Equipped with nitrogen protection system to avoid smoke. Safer.

        3. High-temperature cracking: the lithium battery waste enters the high-temperature cracking system through the conveyor, using external heating. Equipped with inert gas to achieve high-temperature oxygen-free cracking. The electrolyte and binder will be volatilised quickly, and PVDF will be carbonised. Avoid the disadvantage of PVDF adhering to black matter. It can also minimise the organic matter in the black matter. Thus more conducive to the later wet extraction.
 

 
        4. Cooling: After high temperature cracking of the material, and then through the coolant rapid cooling, reduce the temperature of the material.

        5. Crushing wind selection: After further material dispersion, sieving separation, can be sieved black, can be sorted out: black, copper-aluminium mixture, metal shells and so on.

        6. Crushing and grinding: the rest of the material after crushing and grinding. This step is to solve the copper and aluminium in the high-speed hit, easy to curl into a ball, so then grinding. Thus sieving out most of the black powder.

        7. Copper and aluminium separation: copper and aluminium mixture through the specific gravity sorting machine for sorting, will be different quality, particle size for separation. Thus aluminium chips and copper chips are obtained.

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