Title:
METHOD FOR PRODUCING AQUEOUS SOLUTION CONTAINING NICKEL OR COBALT
Document Type and Number:
WIPO Patent Application WO/2023/243827
Kind Code:
A1
Abstract:
The present invention provides a method for producing an aqueous solution containing nickel or cobalt, the method comprising: (A) a leaching step for leaching a raw material under atmospheric pressure to form a leachate containing nickel, cobalt, and impurities, the leaching step including a first atmospheric pressure heated leaching step and a second atmospheric pressure heated leaching step; (B) a first extraction step for introducing a first solvent extractant to the leachate to separate the leachate into a first filtrate, containing nickel and impurities, and a first organic layer, containing cobalt and impurities; (C-i) a precipitation removal step for introducing a precipitant to the first filtrate to precipitate and remove impurities including magnesium, calcium, or a mixture thereof; and (D-i) a target material precipitation step for selectively precipitating a nickel cake containing nickel by introducing a neutralizing agent to the first filtrate that has had the impurities precipitated and removed.
Inventors:
CHOI HEON SIK (KR)
JOO JAE HOON (KR)
CHOI CHANG YOUNG (KR)
JOO JAE HOON (KR)
CHOI CHANG YOUNG (KR)
Application Number:
PCT/KR2023/004100
Publication Date:
December 21, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
KOREA ZINC CO LTD (KR)
KEMCO (KR)
KEMCO (KR)
International Classes:
C01G53/00; C22B3/00; C22B3/04; H01M4/02; H01M4/525
Foreign References:
| KR101979419B1 | 2019-08-28 | |||
| KR101535250B1 | 2015-07-08 | |||
| KR102451443B1 | 2022-10-07 | |||
| KR102471399B1 | 2022-11-28 | |||
| KR20210079709A | 2021-06-30 | |||
| KR102509344B1 | 2023-03-14 |
Attorney, Agent or Firm:
CHANG, Duck Soon et al. (KR)
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