Device for infiltrating and stripping lithium battery anode and cathode materials and working method thereof

Abstract

The invention discloses a device for stripping infiltrated anode and cathode materials of a lithium battery and a working method thereof. A sheared and shredded crushed material battery sequentially passes through an anode material stripping reaction kettle, a cathode material infiltration reaction kettle, a cathode material stripping reaction kettle, a residual material (copper foil aluminum foil) cleaning box and a residual material (copper foil aluminum foil) draining box; the solution in each reaction kettle reacts with the crushed material battery respectively to finish the procedures ofrecycling, the anode and cathode materials are cleaned and drained, and the steps are repeated. A reaction is performed in the reaction kettle to generate trace hydrogen and high temperature (less than or equal to 80 DEG C), the solution is evaporated into air at high temperature, and mixed gas is pumped out from a tail gas port in the upper part of the reaction kettle to a rear-end settling tankfor cooling and then recycled to a tail gas treatment center. Unmanned automation can be realized for stripping of anode and cathode materials of the lithium battery and cleaning and recycling of residual materials, the production efficiency is improved, and environmental pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of recycling positive and negative electrode materials of lithium batteries. Background technique [0002] In the process of lithium battery recycling, firstly, the recovered lithium battery needs to be manually cut into blocks, and immersed in different strong alkaline mixed solutions successively. The lithium battery reacts with the solution to promote the positive and negative materials to be peeled off from the block lithium battery. down, and then carry out corresponding filtration, separation, cleaning, drying and recycling. (Currently this technology only stays in the laboratory and has not been put into actual production.) Then manually put the cut and shredded lithium battery into the solution to infiltrate and peel off the positive and negative electrode materials (the negative electrode material is mainly graphite, the positive electrode The materials are mainly lithium cobalt oxide, lithium ma...

AI Technical Summary

Problems solved by technology

[0003] a. Lithium battery positive and negative electrode material stripping solution is a strong alkaline solution. Manually putting the cut and shredded battery blocks into the strong alkaline solution is easy to splash and cause harm to personal safety. In addition, the reaction of lithium battery contact solution will produce trace hydrogen and high temperature. , hydrogen is flammable, high temperature will cause the solution to volatilize into the air and pollute the air, endangering personal safety;

[0004] b. After cutting the battery, the electrolyte will enter the solution, and will volatilize with the solution into the air, causing great harm to personal safety and environmental pollution

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