Title:
METHOD FOR PRODUCING COBALT SOLUTION, METHOD FOR PRODUCING COBALT SALT, METHOD FOR PRODUCING NICKEL SOLUTION, AND METHOD FOR PRODUCING NICKEL SALT
Document Type and Number:
WIPO Patent Application WO/2023/079834
Kind Code:
A1
Abstract:
A method for producing a cobalt solution which involves removing magnesium ions from a cobalt-containing solution which contains magnesium ions and is obtained by subjecting battery powder from lithion-ion battery waste to at least a leaching treatment, said method including a magnesium separation step which involves extracting cobalt ions from said cobalt-containing solution by using a solvent which contains a carboxylic acid-type extracting agent, separating magnesium ions, and thereafter, inverse-extracting the cobalt ions from the solvent and obtaining a cobalt solution as an inverse-extracted liquid.
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Inventors:
ARIYOSHI HIROTAKA (JP)
ABE HIROSHI (JP)
MIKI YUZURU (JP)
ABE HIROSHI (JP)
MIKI YUZURU (JP)
Application Number:
PCT/JP2022/034087
Publication Date:
May 11, 2023
Filing Date:
September 12, 2022
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
B09B3/00; C22B23/00; B09B3/70; C01G51/00; C01G53/00; C22B3/04; C22B3/32; C22B3/38; C22B7/00; H01M10/54
Foreign References:
| JP2021172856A | 2021-11-01 | |||
| JP2020105599A | 2020-07-09 |
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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