Title:
METHOD FOR PRODUCING MIXED METAL SALT
Document Type and Number:
WIPO Patent Application WO/2021/215521
Kind Code:
A1
Abstract:
A method for producing a mixed metal salt that contains a manganese ion, and a cobalt ion and/or a nickel ion, said method comprising: an Al removal step wherein aluminum ions are removed from an acidic solution, which is obtained by subjecting a battery powder of a lithium ion battery waste to a leaching step, and which contains at least manganese ions, aluminum ions, and cobalt ions and/or nickel ions, by extracting the aluminum ions into a solvent; and a precipitation step wherein the extraction residue solution obtained in the Al removal step is neutralized under the conditions where the pH thereof is less than 10.0, so that a mixed metal salt that contains a metal salt of manganese and a metal salt of cobalt and/or nickel is precipitated.
Inventors:
ARAKAWA JUNICHI (JP)
TAJIRI KAZUNORI (JP)
TAJIRI KAZUNORI (JP)
Application Number:
PCT/JP2021/016381
Publication Date:
October 28, 2021
Filing Date:
April 22, 2021
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
C01G53/00; B01D9/02; B09B3/00; B09B5/00; C01G51/00; C22B3/26; C22B3/32; C22B3/44; C22B7/00; H01M10/54
Foreign References:
| JP2016186113A | 2016-10-27 | |||
| JP2016194105A | 2016-11-17 | |||
| JP2014162982A | 2014-09-08 |
Other References:
See also references of EP 4140956A4
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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