Title:
WET CRUSHING AND RECYCLING METHOD AND DEVICE FOR SPENT LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/083107
Kind Code:
A1
Abstract:
A wet crushing and recycling method and device for a spent lithium-ion battery. The recycling method comprises: crushing a spent lithium-ion battery in a first solution to obtain a first mixture; subjecting the first mixture to buoyancy sorting to obtain a second mixture and a plastic film; subjecting the second mixture to a pre-treatment to obtain a shell, a pile head, a first filtrate, a second filtrate, a copper foil, an aluminum foil and a third mixture; subjecting the first filtrate and/or the second filtrate to reduced-pressure distillation to obtain a first mixed gas and a fourth mixture; volatilizing the third mixture in an inert gas to obtain a second mixed gas and a black powder; subjecting the fourth mixture to a post-treatment to obtain a second lithium salt, calcium fluoride and calcium phosphate, and condensing the first mixed gas and/or the second mixed gas to obtain a first mixed solution; and subjecting the first mixed solution to a liquid separation treatment to obtain a second mixed solution and a third mixed solution, and rectifying the second mixed solution to obtain an organic solvent and water. The lithium salt and the organic solvent in the solution are efficiently recycled, and the problem of environmental pollution caused by improper solution treatment during a wet crushing and recycling process of a spent lithium-ion battery is solved.
Inventors:
WU YUPENG (CN)
WEI WENTIAN (CN)
LIU YATING (CN)
CHEN CHUANLIN (CN)
LIN HAIQIANG (CN)
HAN HENG (CN)
SU JUN (CN)
HUANG BING (CN)
WEI WENTIAN (CN)
LIU YATING (CN)
CHEN CHUANLIN (CN)
LIN HAIQIANG (CN)
HAN HENG (CN)
SU JUN (CN)
HUANG BING (CN)
Application Number:
PCT/CN2023/124904
Publication Date:
April 25, 2024
Filing Date:
October 17, 2023
Export Citation:
Assignee:
GUANGZHOU TINCI MATERIALS TECH CO LTD (CN)
International Classes:
H01M10/54; B01D36/00; B01F33/83; B03B9/06; H01M10/0525
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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