Patent ID: 11872595
Assignee: GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  H  Y | IPC B

Claim 0:
1. A wet sorting process for a waste lithium battery, comprising the following steps of:
(1) carrying out wet ball milling on a sorting material of the waste lithium battery to obtain a ball-milled product;
(2) screening the ball-milled product to obtain a coarse-grained screened material, a medium-grained screened material and a fine-grained screened material; wherein, in step (2), the coarse-grained screened material is returned to step (1) for ball milling;
(3) carrying out wet ball milling, screening, magnetic separation and table concentration on the medium-grained screened material to obtain copper, aluminum and a steel shell; wherein, in step (3), a size of a sieve hole of the screening is 0.15 mm, and a screened product with a size smaller than 0.15 mm is fed into step (4) for flotation; and
(4) carrying out flotation, magnetic separation and table concentration on the fine-grained screened material to obtain cathode material powder, graphite, copper and aluminum;
wherein, in step (2), the coarse-grained screened material has a particle size of greater than 2 mm to 4 mm, the medium-grained screened material has a particle size of 0.15 mm to 2 mm, and the fine-grained screened material has a particle size of less than 0.15 mm.