Title:
VALUABLE METAL RECOVERY METHOD AND RECOVERY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/176709
Kind Code:
A1
Abstract:
The present invention has an acid leaching step S4 for adding acid S to battery slag M extracted from a lithium ion cell to form a leachate E, a fourth addition step S11 for adding sodium carbonate A4 to a third treated filtrate F3 that includes a Li part formed from the leachate E to form a fourth treatment product P4, a fourth filtration step S12 for filtering the fourth treatment product P4 to separate the fourth treatment product P4 into a fourth treated filtrate F4 and a fourth treatment residue R4 that includes a Ca part, a heating step S13 for heating the fourth treated filtrate F4, a fifth addition step S14 for blowing carbon dioxide gas G into the heated fourth treated filtrate H to form a fifth treatment product P5, and a fifth filtration step S15 for filtering the fifth treatment product P5 to separate the fifth treatment product P5 into a fifth treated filtrate F5 that includes a Na part and a fifth treatment residue R5 that includes a Li part.
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Inventors:
KURAMOCHI KENTA (JP)
MIYAZAKI ATSUSHI (JP)
MURAOKA HIROKI (JP)
MIYAZAKI ATSUSHI (JP)
MURAOKA HIROKI (JP)
Application Number:
PCT/JP2022/004921
Publication Date:
August 25, 2022
Filing Date:
February 08, 2022
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C22B1/02; C22B3/06; C22B3/44; C22B7/00; C22B26/12
Foreign References:
| JP2019160429A | 2019-09-19 | |||
| JP2015183292A | 2015-10-22 | |||
| JP2013057097A | 2013-03-28 | |||
| JP2017537221A | 2017-12-14 | |||
| JP2019011518A | 2019-01-24 | |||
| JP2019153562A | 2019-09-12 | |||
| JP2021023309A | 2021-02-22 | |||
| JP2019160429A | 2019-09-19 | |||
| JP2019011518A | 2019-01-24 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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