Title:
METHOD FOR TREATING COPPER-COBALT ALLOY OF WASTE LITHIUM BATTERY AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/193517
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of battery recovery. Disclosed in the present invention are a method for treating a copper-cobalt alloy of a waste lithium battery and the use thereof. The method comprises the following steps: subjecting a waste lithium battery to roasting, acid pickling and solid-liquid separation to obtain copper slag containing nickel and cobalt impurities and a filtrate containing nickel and cobalt; briquetting the copper slag containing nickel and cobalt impurities to prepare an anode in an electrolytic bath, taking a copper sheet as a cathode in the electrolytic bath, and adding an electrolyte for electrolysis; and water washing the electrolyzed cathode to obtain copper, scattering the electrolyzed anode, then adding an oxidant and sulfuric acid, stirring and dissolving same to obtain a copper sulfate mixed solution, and subjecting an electrolyzed electrolyte for evaporative crystallization to obtain an acid solution, nickel sulfate crystals and cobalt sulfate crystals. During the process for treating the copper-cobalt alloy in the present invention, the briquetting is used to replace the previous melting into blocks, and a waste lithium battery module or monomer is used as an electrolysis power supply, such that energy is saved and is better utilized.
Inventors:
CAI HAIBING (CN)
LIU WEI (CN)
LIU YONGQI (CN)
LI CHANGDONG (CN)
GONG QINXUE (CN)
LIU WEI (CN)
LIU YONGQI (CN)
LI CHANGDONG (CN)
GONG QINXUE (CN)
Application Number:
PCT/CN2023/074949
Publication Date:
October 12, 2023
Filing Date:
February 08, 2023
Export Citation:
Assignee:
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
International Classes:
C22B1/02; C25B1/01; C22B7/00
Domestic Patent References:
| WO2017118955A1 | 2017-07-13 |
Foreign References:
| CN114875240A | 2022-08-09 | |||
| CN111373062A | 2020-07-03 | |||
| CN113802002A | 2021-12-17 | |||
| CN101509071A | 2009-08-19 | |||
| AU2012261548A1 | 2013-01-10 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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