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)
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:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING 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:
| CN112342394A | 2021-02-09 | |||
| CN106848470A | 2017-06-13 | |||
| CN111187911A | 2020-05-22 | |||
| CN110616331A | 2019-12-27 | |||
| CN107959080A | 2018-04-24 | |||
| CN111799524A | 2020-10-20 | |||
| AU2020100054A4 | 2020-02-20 | |||
| JP2005042189A | 2005-02-17 |
Other References:
See also references of EP 4206340A4
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
Download PDF: