Waste single battery crushing system and process

Abstract

The invention provides a waste single battery crushing system and process. The crushing system comprises a battery crusher, a low-temperature baking furnace, a first hammer mill, a first linear sieve, a magnetic separation mechanism, a second hammer mill, a cyclone dust collector, a drum sieve, a second linear sieve and a gravity separation system, wherein a first negative pressure adsorption system is arranged above the battery crusher and the low-temperature baking furnace; a second negative pressure adsorption system is arranged above the first hammer mill, the first linear sieve, the magnetic separation mechanism, the second hammer mill, the drum sieve and the gravity separation system; the first negative pressure adsorption system is connected with a waste gas treatment system; and a dust collection treatment system is connected to the portion above the second negative pressure adsorption system and the cyclone dust collector. The waste single battery crushing system integrates crushing of waste single batteries, recovery and disposal of electrolyte, baking of crushed materials, grinding of the crushed materials, screening of magnetic shells, recovery of positive and negative electrode powder, recovery of diaphragm paper, recovery of copper and aluminum foils and dust collection treatment, and the purpose of recycling resources is achieved.

Description

technical field [0001] The invention relates to the technical field of waste battery crushing and processing devices, in particular to a waste battery crushing system and a process thereof. Background technique [0002] Used batteries are batteries that have been used and discarded. The composition of lithium-ion batteries mainly includes positive electrode materials, negative electrode materials, separators, binders, conductive agents, etc. Among them, the positive electrode materials mainly include lithium cobaltate, lithium manganate, lithium nickelate, lithium iron phosphate and ternary materials. Lithium cobaltate, as a typical positive electrode material representative, is widely used in daily life because of its high capacity and strong cycle stability, and cobalt and lithium in lithium cobaltate have high recovery value as a rare metal element, because Batteries contain a large amount of precious metals and rare elements, which are not only harmful to the water and ...

AI Technical Summary

Problems solved by technology

However, because the broken battery material will be mixed with electrolyte inside, the broken battery material will adhere to the inner wall of the device, causing the battery broken material inside the device to be unable to be discharged. Over time, the adhered battery broken material will cause damage to the discharge port. A certain blockage, resulting in unsmooth discharge

[0005] 2) The current waste battery crushing device does not crush waste batteries well, and the crushed materials also contain a large amount of massive solids, which affects the overall recycling of waste batteries; Production safety

[0006] 3) After the waste lithium battery is physically crushed, the crushed material contains electrolyte. Before recycling the valuable materials in the crushed material, the electrolyte in the crushed material needs to be removed, but there is no special one in the market currently. A device for removing the electrolyte in the crushed materials of waste lithium batteries

[0007] 4) When waste lithium batteries are recycled, a large amount of exhaust gas and dust will be generated, which not only increases the pollution of the environment, but also is not conducive to the health of the surrounding people

After the current gravity separator has been in operation for a long time, some broken materials of waste lithium batteries will stick to the screen of the separator, and the cleaning of the screen of the separator needs to be done manually after the equipment is shut down, which is very inconvenient and undoubtedly increases the labor force and is time-consuming. strenuous

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