Title:
METAL LEACHING METHOD AND METAL RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2023/188489
Kind Code:
A1
Abstract:
This method for leaching metals in a battery powder containing at least copper as well as cobalt and/or nickel has a leaching process repeated a plurality of times. The leaching process includes: a first leaching step for leaching the metals in the battery powder using an acidic leachate, finishing leaching before the copper dissolves out, and extracting a leaching residue from a post-leaching solution thereby obtained; and a second leaching step for leaching the metals in the leaching residue from the first leaching step using an acidic leachate, finishing leaching after the copper has dissolved out, and obtaining a post-leaching solution. The post-leaching solution obtained in the second leaching step of a leaching process is used as the acidic leachate in the first leaching step of the next leaching process performed after said leaching process. In the second leaching step of at least one of the leaching processes, the leaching residue is extracted from the post-leaching solution.
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Inventors:
SHIKADA KEI (JP)
HIGUCHI NAOKI (JP)
FUJIMOTO ATSUSHI (JP)
HIGUCHI NAOKI (JP)
FUJIMOTO ATSUSHI (JP)
Application Number:
PCT/JP2022/039561
Publication Date:
October 05, 2023
Filing Date:
October 24, 2022
Export Citation:
Assignee:
JX METALS CORP (JP)
International Classes:
C22B3/06; C22B7/00; C22B23/00
Foreign References:
| JP2013001916A | 2013-01-07 | |||
| JP2019169309A | 2019-10-03 | |||
| JP2022514634A | 2022-02-14 |
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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