Title:
METHOD FOR RECOVERING LITHIUM AND METHOD FOR PROCESSING LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/182452
Kind Code:
A1
Abstract:
The present invention provides a method for recovering lithium, and the like, said method for recovering lithium enabling recovery of lithium from a lithium ion secondary battery. This method for recovering lithium comprises: a heat treatment step for obtaining a heat-treated material by subjecting a lithium ion secondary battery, wherein a voltage of 80% or more relative to the rated voltage remains, to a heat treatment; a crushing step for obtaining a crushed material by crushing the heat-treated material; and a lithium recovery step for recovering lithium from the crushed material.
Inventors:
NISHIKAWA CHIHIRO (JP)
HONMA YOSHIHIRO (JP)
WATANABE RYOEI (JP)
YAMASHITA MASATAKA (JP)
ITO YOSHIKI (JP)
YOSHIWARA YOSHITAKA (JP)
HONMA YOSHIHIRO (JP)
WATANABE RYOEI (JP)
YAMASHITA MASATAKA (JP)
ITO YOSHIKI (JP)
YOSHIWARA YOSHITAKA (JP)
Application Number:
PCT/JP2021/009223
Publication Date:
September 16, 2021
Filing Date:
March 09, 2021
Export Citation:
Assignee:
DOWA ECO SYSTEM CO LTD (JP)
International Classes:
B09B3/00; C22B1/00; C22B1/02; C22B3/04; C22B3/22; C22B3/44; C22B7/00; C22B9/16; C22B26/12; H01M10/54
Foreign References:
| JP2011124127A | 2011-06-23 | |||
| CN110923453A | 2020-03-27 | |||
| CN111430831A | 2020-07-17 | |||
| JP6198027B1 | 2017-09-20 |
Attorney, Agent or Firm:
HIROTA, Koichi et al. (JP)
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