Novel process for efficiently crushing waste lithium ion battery

Abstract

The invention discloses a novel process for efficiently crushing a waste lithium ion battery. The process consists of residual electricity discharging, wet crushing and screening, wherein the residual electricity charging is to soak the waste lithium ion battery to be treated by using a 5 percent NaCl solution for 2 hours; the wet crushing is to crush the waste lithium ion battery subjected to the residual electricity charging in a blade impact crusher with water; and the screening is to screen the crushed slurry on a vibrating screen and settle materials enriched below a screen; the sediment is used for subsequent lithium cobaltate purification treatment; and materials on the screen can be treated in a classified mode. In the novel process, the waste lithium ion battery can be crushed efficiently and selectively, crushing time is short and crushing effect is good, and all materials such as lithium cobaltate, carbon materials and the like can be enriched below -0.25mm, so that an excellent raw material is provided for the subsequent treatment such as the lithium cobaltate recovery and the like and the recovery cost of the lithium cobaltate is greatly reduced. The novel process is suitable for the recovery treatment of the waste lithium ion battery.

Description

technical field [0001] The invention relates to a new high-efficiency crushing process of waste lithium ion batteries, which belongs to the technical field of waste material recovery. Background technique [0002] Lithium-ion batteries are widely used in the field of mobile electronic products such as mobile phones, notebook computers, video cameras, digital cameras, etc. The average lifespan is 500-1000 cycles, and lithium-ion batteries will fail after 2-3 years of use. Waste lithium-ion batteries are mainly composed of positive electrode material (lithium cobaltate active material), separator (polyethylene or polypropylene film), negative electrode material (active carbon material), organic electrolyte, electronic circuit components, thin metal layer inner core and The active material lithium cobalt oxide is most worthy of recycling. The regeneration methods mainly include high-temperature sintering method, wet chemical method and biological treatment method. [0003] Obt...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is, in order to overcome the shortcoming of the dry pulverization process that the existing p

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