Power Battery Recycling Equipment and Pole Piece Recycling Process Description

Waste lithium-ion batteries and pole piece waste recycling can be utilized enterprise production technology process design process, end-of-life power battery and pole piece recycling data processing workflow, lithium battery positive and negative electrode dismantling powder production line process flow analysis and description.

1. Discharge, waste power lithium batteries can often have residual power, subsequent dismantling, crushing process is more likely to lead to the emergence of such batteries short-circuit and a large number of exothermic. Chemical reaction solution discharge can be placed in the battery a safe working voltage, a certain quality concentration of phosphate solution as the realization of the discharge development process,Lithium battery recycling discharge efficiency is high, reducing the load of waste gas purification.

2. Preliminary dismantling: after the completion of the discharge of waste power lithium batteries need to dismantle the battery, i.e., by manually sorting out the various components of the battery. Artificial dismantling is under the safety protection with the help of tools will first be the shell of the waste battery stripped. In addition to get the battery core. The dismantling method can realize the full separation of the components of the waste lithium power battery. The battery shell is generally composed of plastic, stainless steel, aluminum plate and so on. Dismantling helps to extend the use of crushing equipment, improve the enrichment of valuable metals in the electrode powder.

3. Step-by-step crushing:The disassembled cell and pole piece waste enters the crusher for crushing, the positive and negative pole pieces and diaphragm of the battery are broken up, and then enters the airflow sorting sieve, collects the film in the positive and negative pole pieces through the airflow and vibration, and at the same time, collects the black powder produced by the airflow sorter,battery production line and then separates and recycles the mixture through the combination process of crushing, vibrating sieve, grinding and airflow sorting.

4. Electromagnetic separation: Electromagnetic separation mainly uses different separation methods such as eddy current sorter and magnetic separator to separate iron, aluminum, copper and other metals in the battery crushed material. The working principle of eddy current sorter is a sorting technology with different physical conductivity. When working, the surface of the magnetic roller generates a high-frequency alternating strong magnetic field. When the non-ferrous metal with conductivity passes through the magnetic field, an eddy current is induced in the non-ferrous metal. This eddy current itself will produce a magnetic field in the opposite direction to the original magnetic field, and different non-ferrous metals (such as copper and aluminum) will leap forward along their conveying direction to achieve separation due to the different repulsive force of the magnetic field. The principle of magnetic separator is to separate magnetic and non-magnetic materials according to the different magnetic properties of minerals.labeling machine The proposed project can separate steel, iron, nickel and other magnetic metals through magnetic separation.

5. Exhaust gas purification: Bag filter + alkali spray + UV light oxidation catalytic + activated carbon adsorption method is adopted to deal with waste lithium batteries, HF gas, volatile organic compounds and dust generated in the crushing process. The efficiency of dust treatment can be up to 99%, and the efficiency of HF treatment can be up to 98%. Dust concentration, velocity and HF emissions are in line with the comprehensive emission standards (GB16297-1996) secondary standards (dust: 12.74 kg/h (24m), 120MG/m3; HF: 0.338 kg/h (24m), 9MG/m3) requirements. The VOCs mainly come from organic solvents, accounting for 6% of the total organic solvents of used lithium batteries. The crushed VOCs are treated by UV photo-oxidation and activated carbon adsorption with 99% efficiency .

Power Battery Recycling Equipment Lithium Battery Positive and Negative Pieces

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