Title:
METHOD FOR RECOVERING NICKEL FROM IRON-ALUMINUM SLAG OBTAINED BY BATTERY POWDER LEACHING
Document Type and Number:
WIPO Patent Application WO/2023/029570
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for recovering nickel from iron-aluminum slag obtained by battery powder leaching. The method comprises the following steps: adding a sulfuric acid solution into an iron-aluminum slag to dissolve, so as to obtain a sulfate solution; then adding an oxidizing agent; adding ammonia water and carbonate into the oxidized sulfate solution; adjusting the pH to 1.0-3.2 for reaction; separating ferric hydroxide to precipitate to obtain an iron-removed solution; adding carbonate into the iron-removed solution, adjusting the pH to 3.2-5.5 for reaction; separating aluminum hydroxide to precipitate to obtain an aluminum-removed solution; adding ammonia water to the aluminum-removed solution, adjusting the pH to 7.0-8.8 for reaction; washing and removing impurities to obtain a nickel complex; adding an oxidizing agent to the nickel complex to break the complex, so as to obtain a nickel-containing solution. By means of the present method, efficient separation of iron, aluminum and nickel in the iron-aluminum slag is efficiently achieved, the separation effect of iron, aluminum and nickel is improved, the loss of nickel is reduced, and the recovery rate of nickel is improved.
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Inventors:
YU HAIJUN (CN)
ZHONG YINGSHENG (CN)
LI AIXIA (CN)
XIE YINGHAO (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
ZHONG YINGSHENG (CN)
LI AIXIA (CN)
XIE YINGHAO (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2022/092486
Publication Date:
March 09, 2023
Filing Date:
May 12, 2022
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; C22B21/00; C22B23/00; H01M10/54
Foreign References:
| CN113789447A | 2021-12-14 | |||
| CN111004918A | 2020-04-14 | |||
| CN105506290A | 2016-04-20 | |||
| CN111041214A | 2020-04-21 | |||
| CN110492193A | 2019-11-22 | |||
| CN103288145A | 2013-09-11 | |||
| CN111261967A | 2020-06-09 | |||
| CN103031441A | 2013-04-10 | |||
| JP2017036478A | 2017-02-16 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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