Title:
METHOD FOR RECOVERING NICKEL
Document Type and Number:
WIPO Patent Application WO/2024/045530
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for recovering nickel. The method comprises the following steps: S1, mixing a nickel-containing waste residue and a leaching agent, carrying out solid-liquid separation, and collecting a solid-phase product; and S2, mixing the solid-phase product obtained in step S1 and a leaching agent, carrying out solid-liquid separation, and collecting a liquid-phase product. The leaching agent comprises at least one of ammonium hydroxide and an ammonium salt solution, the nickel-containing waste residue further comprises iron, aluminum and sodium, and the nickel-containing waste residue further comprises SO4
2-. In step S1, the molar ratio of NH4+ in the leaching agent to SO4
2- in the nickel-containing waste residue is (2-2.05):1. The method in the present invention can achieve separation of nickel and impurity metals.
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Inventors:
CHEN JIAJIA (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
CHEN RUOKUI (CN)
QIAO YANCHAO (CN)
ZENG ZHIJIA (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
CHEN RUOKUI (CN)
QIAO YANCHAO (CN)
ZENG ZHIJIA (CN)
Application Number:
PCT/CN2023/079348
Publication Date:
March 07, 2024
Filing Date:
March 02, 2023
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:
C22B7/00; C01D7/00; C01F7/142; C22B1/00; C22B21/00; C22B23/00; H01M10/54
Foreign References:
| CN113789447A | 2021-12-14 | |||
| KR20010001055A | 2001-01-05 | |||
| DE2808263A1 | 1978-09-07 | |||
| CN107230811A | 2017-10-03 | |||
| CN113249574A | 2021-08-13 | |||
| CN103343232A | 2013-10-09 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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