A method to reclaim and dispose waste secondary lithium ion battery

Abstract

The related recovery and process method for waste secondary Li-ion cell comprises: separating cell shell, circuit board and cell core by mechanical means; discharging the core; then separating to obtain the shell and coiling material of cell core; putting the last one into some organic solvent to separate the cell polar material from collector foil, filtering to obtain the foil and active material for recovery by chemical way. With small investment, this invention is simple and safe and high yield.

Description

technical field [0001] It belongs to the technical field of electronic waste recycling and reuse, so as to ensure the pollution-free and sustainable development of the electronic industry. Background technique [0002] The invention is a recycling treatment technology researched and developed aiming at the secondary lithium ion battery produced by a large number of waste electronic products at present. Secondary lithium-ion batteries can also be called rechargeable lithium batteries. All countries in the world are facing the problem of recycling waste electronic products. Secondary lithium-ion batteries are widely used in portable electronic products such as mobile phones and digital cameras. The mobile phone is a communication tool with a very high elimination rate. Although its design service life is generally about seven or eight years, the service life of mobile phone batteries is shorter, generally about two or three years, and the service life of mobile phone batter...

AI Technical Summary

Problems solved by technology

[0004] Used secondary lithium-ion batteries usually have some charge remaining when they are discarded. A large number of battery accumulations can cause fire or even explosion. At the same time, it may also cause danger due to short circuit during mechanical handling.

[0005] Secondary lithium-ion batteries contain electrolytes and positive and negative electrodes. If they are discarded randomly, they will cause great pollution to the environment.

[0007] This technology is aimed at all kinds of hybrid batteries. Although the processing range is wide, the technical feature 1) adopts wet discharge, electrolyte leakage, and the treatment of discharge medium has complicated procedures; feature 3) uses the whole battery core to break , the electrode material and the carrier film and the shell metal are very seriously adhered, making the subsequent separation process difficult or incomplete; the cleaning process after crushing consumes a lot of water; The human body and the environment are highly toxic, so breaking them together will cause the diffusion of pollution; in addition, in features 4) and 5), acid and alkali are repeatedly used to process the mixed pure metal at a higher temperature, which not only wastes materials, but also requires equipment. The use of materials with high corrosion resistance will inevitably result in high processing costs, making it difficult to achieve industrialization

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