A kind of waste power battery environment-friendly recycling method

Abstract

A method for recycling and reusing waste power battery belongs to that field of recycling waste battery. The battery is completely discharged and placed under a sealed and protective gas atmosphere, and the battery pole head, the shell and the battery cell are collected by cold cutting; the obtained cell is immersed and cleaned in the replacement solution. And the positive electrode, the negativeelectrode and the diaphragm are separated by unwinding; The positive and negative electrode pieces are respectively soaked in distilled water and ultrasonicated to obtain positive and negative electrode materials, aluminum foil and copper foil; The electrolyte volatile in the process of cell disassembly is absorbed by absorption tower. Distillation, condensation, filtration and drying are used forrecycling of the replacement liquid used in the cell immersion process, and the harmful substances are recovered through a neutralization sedimentation tank and a tail gas absorption tank. The ultrasonic liquid is recycled after being precipitated by adding demulsifier, filtered and treated by biological contact oxidation. The invention realizes the recovery and regeneration of the waste lithiumion battery, the process is safe, harmless, the automation degree is high, the treatment is efficient and convenient, and the secondary pollution to the environment is not generated.

Description

technical field [0001] The invention belongs to the recycling process of waste batteries, and in particular relates to a safe, harmless and recyclable recovery process of waste power batteries and the regeneration and recovery treatment of various parts. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, high voltage, long life, low self-discharge rate, no memory effect, good cycle performance and wide temperature range. The main power source for electronic equipment. According to statistics, the global production of lithium-ion batteries exceeded 580 million in 2000, and the domestic production was about 100 million. In 2003, the global production reached 1.255 billion. In 2008, the output reached 2.71 billion. In 2010, the global production exceeded 3 billion. . With the increasingly mature manufacturing technology of lithium-ion batteries, its use is becoming wider and wider, especially in recent years with the vigorous devel...

AI Technical Summary

Problems solved by technology

[0005] At present, the recycling of waste power batteries is basically still in the laboratory research stage, and only a part of the whole recycling process is studied. The existing recycling industrialization scale is small, the efficiency is low, and the pollution is serious, which cannot meet the urgent needs of a large number of waste power batteries.

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