Title:
METHOD FOR CONCENTRATING VALUABLE METAL CONTAINED IN LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/177200
Kind Code:
A1
Abstract:
The present invention provides a method for concentrating a valuable metal contained in a lithium ion secondary battery, wherein a lithium ion secondary battery or a positive electrode material of the lithium ion secondary battery containing at least one of cobalt and nickel is treated so as to concentrate a valuable metal comprising at least one of cobalt and nickel. This method for concentrating a valuable metal contained in a lithium ion secondary battery comprises a heat treatment step wherein the lithium ion secondary battery or a positive electrode material thereof is subjected to a heat treatment, thereby forming a grain aggregate that contains at least one of cobalt and nickel, which are valuable metals.
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Inventors:
WATANABE RYOEI (JP)
HONMA YOSHIHIRO (JP)
NISHIKAWA CHIHIRO (JP)
YAMASHITA MASATAKA (JP)
LIU JIAHAO (JP)
HONMA YOSHIHIRO (JP)
NISHIKAWA CHIHIRO (JP)
YAMASHITA MASATAKA (JP)
LIU JIAHAO (JP)
Application Number:
PCT/JP2021/007600
Publication Date:
September 10, 2021
Filing Date:
March 01, 2021
Export Citation:
Assignee:
DOWA ECO SYSTEM CO LTD (JP)
International Classes:
B09B3/00; B09B5/00; C22B7/00; C22B23/02; H01M4/587; H01M10/54; H01M50/20
Domestic Patent References:
| WO2012169073A1 | 2012-12-13 |
Foreign References:
| JP2014199774A | 2014-10-23 | |||
| JPH07207349A | 1995-08-08 | |||
| JPH06322452A | 1994-11-22 | |||
| JPH1074539A | 1998-03-17 | |||
| JP2000348782A | 2000-12-15 | |||
| JP2017037807A | 2017-02-16 | |||
| JP2019169309A | 2019-10-03 | |||
| JP5706457B2 | 2015-04-22 |
Attorney, Agent or Firm:
HIROTA, Koichi et al. (JP)
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