Title:
WASTE LITHIUM BATTERY LEACHATE TREATMENT METHOD AND WASTE LITHIUM BATTERY RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2024/021290
Kind Code:
A1
Abstract:
The present invention relates to relates to the technical field of lithium battery recovery. Disclosed are a waste lithium battery leachate treatment method and a waste lithium battery recovery method. Iron-aluminum slag generated in the leachate treatment process is subjected to high-temperature calcination, and a high-temperature calcination product is recycled as a Fenton-like catalyst; the pH value of a leachate is adjusted and then the leachate reacts with hydrogen peroxide and the Fenton-like catalyst, so that ferrous ions are converted into ferric ions, and organic matter is also reacted; at the same time, fluorine ions in the leachate can be adsorbed by utilizing the porous characteristics of the Fenton-like catalyst. In the present invention, the waste iron-aluminum slag is recycled, the COD and fluorine content in the leaching process can also be reduced, and the waste slag generated in waste lithium battery recovery is calcinated and then used as a catalyst to catalyze waste liquid generated from the waste slag, thereby achieving use of waste to treat waste; moreover, the original production process is not changed, no other purities are introduced, and the present invention has relatively wide engineering application prospects.
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| WO/2016/171580 | ALUMINUM ELECTROLYZER ELECTRODE (VARIANTS) |
| WO/2024/014521 | METHOD FOR REMOVING ALUMINUM AND METHOD FOR RECOVERING METALS |
Inventors:
ZHANG JINCHAO (CN)
LIU SHAOKUI (CN)
LIU YONGQI (CN)
GONG QINXUE (CN)
LI CHANGDONG (CN)
LIU SHAOKUI (CN)
LIU YONGQI (CN)
GONG QINXUE (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2022/121885
Publication Date:
February 01, 2024
Filing Date:
September 27, 2022
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
C22B21/00; C02F1/72; C02F9/00; C22B3/06; C22B7/00; C02F101/14; C02F101/30
Foreign References:
| CN115028295A | 2022-09-09 | |||
| CN110492193A | 2019-11-22 | |||
| CN114349149A | 2022-04-15 | |||
| US20190106768A1 | 2019-04-11 | |||
| JP2016191093A | 2016-11-10 | |||
| CN109876811A | 2019-06-14 | |||
| CN112209488A | 2021-01-12 | |||
| CN111471864A | 2020-07-31 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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