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Patent Searching and Data


Title:
NON-FULL EXTRACTION BATTERY RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2022/088641
Kind Code:
A1
Abstract:
The present invention relates to the technical field of resource recovery, and discloses a non-full extraction battery recovery method, comprising the following steps: introducing pre-treatment gas into a device containing waste battery powder, absorption liquid A and absorption liquid B being introduced sequentially into a gas outlet; raising the temperature, introducing pre-treatment gas, reducing the temperature, introducing reaction gas, raising the temperature, introducing reaction gas, introducing pre-treatment gas again, reducing the temperature, and shutting down; adding an extraction agent to absorption liquid A and mixing, taking organic phase A, adding a stripping agent, and taking the aqueous phase A; adjusting the pH to acidic, adding the extraction agent again, taking the organic phase B, adding the stripping agent, and thereby obtaining a stock solution rich in LiMnNiCo; the pre-treatment gas is at least one of nitrogen, helium, argon, or neon; the reaction gas is chlorine, fluorine, or bromine; absorption liquid A is an acidic liquid; and absorption liquid B is an alkali liquid. The present invention differs from a waste battery full extraction recovery process by using a non-full extraction method, first implementing a chlorination volatilisation reaction and then using an extraction method to extract the required metal elements LiMnNiCo, the extraction rate being 99.86-99.98%.

Inventors:
YU HAIJUN (CN)
PENG TING (CN)
XIE YINGHAO (CN)
ZHANG XUEMEI (CN)
Application Number:
PCT/CN2021/091611
Publication Date:
May 05, 2022
Filing Date:
April 30, 2021
Export Citation:
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Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
International Classes:
C22B7/00; C22B1/00; C22B3/38; C22B23/00; C22B26/12; C22B47/00; H01M4/1391; H01M10/54
Foreign References:
CN112342394A2021-02-09
CN106848470A2017-06-13
CN111187911A2020-05-22
CN110616331A2019-12-27
CN107959080A2018-04-24
CN111799524A2020-10-20
AU2020100054A42020-02-20
JP2005042189A2005-02-17
Other References:
See also references of EP 4206340A4
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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