Recycling separation process of electrode component materials of used lithium batteries

Abstract

The invention relates to a recycling separation process of electrode component materials of used lithium batteries, which comprises shearing detached cathode materials of used lithium batteries into sheets and placing the sheets in a hammer crusher for stripping carbon powder and acetylene black powder which are attached on the surface of cathode copper foil by hamming and vibrating, wherein the lower part of the hammer crusher is provided with a sieve plate, hammer-crushed cathode particles having a diameter smaller than the bore diameter of the sieve plate fall into sieving equipment under the sieve plate through the pores of the sieve plate, cathode material having a diameter larger than the bore diameter of the sieve plate is circularly crushed by hammering in the hammer crusher till the diameter of the cathode material is smaller than the bore diameter of the sieve plate, and due to the size and shape differences between the particles, the crushed particles which fall into the sieving equipment and are non-metal carbon power and acetylene black powder are separated from metal copper through vibration sieving after the stripping by hammering and vibrating; and shearing the anodes of used lithium batteries into sheets and delivering the sheets into drum-type pyrolysis equipment for processing, wherein an organic bonder bonding aluminum foil, lithium cobaltoxide and acetylene black is decomposed under heat, the battery anode material of which component materials are stripped mutually is continuously discharge out from the other end of the pyrolysis equipment, and thus the separation of the anode aluminum foil from the lithium cobaltoxide and the acetylene black is realized through vibrating, impacting and sieving in the follow-up sieving equipment with an impacting member. The process has the advantage of simplicity, high efficiency, easy control, cleanness and environmental protection.

Description

technical field [0001] The invention relates to a recycling separation process of electrode constituent materials of waste lithium batteries. Background technique [0002] Batteries are the power source of many electronic and electrical equipment. The rapid development of transportation, communication and electronic information technology, and the in-depth popularization of electric vehicles, mobile phones and notebook computers in people's lives have greatly promoted the progress of battery technology, and new battery products have emerged in an endless stream. Among them, since the advent of lithium battery, it has quickly become a hot spot in the market due to its remarkable advantages, replacing wired power supply and fuel power supply in many occasions, providing energy and power guarantee for the rapid development of modern electronics and wireless communication industries, and can It is expected to be widely used in electric vehicles, aerospace and energy storage. ...

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Problems solved by technology

The common disadvantage of these methods is that the comprehensive utilization rate is low

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