Title:
METHOD FOR TREATING ALLOY
Document Type and Number:
WIPO Patent Application WO/2023/002917
Kind Code:
A1
Abstract:
Provided is a method for obtaining a solution having a high concentration of nickel and/or cobalt from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium-ion battery or the like. A method for treating an alloy according to the present invention comprises: a leaching step S1 for subjecting an alloy that contains copper as well as nickel and/or cobalt to a leaching treatment by using an acid solution in the presence of a sulfiding agent to obtain a leachate and a leaching residue; and a reduction step S2 for adding a reducing agent to a part of the obtained leachate and performing a reduction treatment to obtain a post-reduction solution and a reduction residue, wherein in the leaching step S1, the leachate that has not been provided in the reduction treatment in the reduction step S2, is repeatedly used as part or all of the acid solution added in the leaching treatment.
Inventors:
SHOUJI HIROFUMI (JP)
TAKENOUCHI HIROSHI (JP)
MATSUOKA ITSUMI (JP)
SANJO SHOTA (JP)
MATSUGI TAKUMI (JP)
ASANO SATOSHI (JP)
HEGURI SHIN-ICHI (JP)
TAKENOUCHI HIROSHI (JP)
MATSUOKA ITSUMI (JP)
SANJO SHOTA (JP)
MATSUGI TAKUMI (JP)
ASANO SATOSHI (JP)
HEGURI SHIN-ICHI (JP)
Application Number:
PCT/JP2022/027748
Publication Date:
January 26, 2023
Filing Date:
July 14, 2022
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B3/04; C22B3/44; C22B7/00; C22B15/00; C22B23/00
Foreign References:
| JP2019065346A | 2019-04-25 | |||
| JP2012001750A | 2012-01-05 | |||
| JPS4618847B1 | 1971-05-26 | |||
| JP2019530795A | 2019-10-24 | |||
| JP2012172169A | 2012-09-10 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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