Title:
METHOD FOR RECOVERING VALUABLE MATERIALS FROM LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/059565
Kind Code:
A1
Abstract:
A method for recovering valuable materials from a lithium ion secondary battery, the method including: a heat treatment step for heat-treating a lithium ion secondary battery containing aluminum, carbon, and copper foil as constituent materials; and a wet sorting step for applying external force, in the presence of a liquid, to the heat-treated material obtained in the heat treatment step, and separating heavy products from light products, including copper.
Inventors:
NISHIKAWA CHIHIRO (JP)
HONMA YOSHIHIRO (JP)
WATANABE RYOEI (JP)
YAMASHITA MASATAKA (JP)
HONMA YOSHIHIRO (JP)
WATANABE RYOEI (JP)
YAMASHITA MASATAKA (JP)
Application Number:
PCT/JP2021/032877
Publication Date:
March 24, 2022
Filing Date:
September 07, 2021
Export Citation:
Assignee:
DOWA ECO SYSTEM CO LTD (JP)
International Classes:
B09B5/00; C22B7/00; C22B15/00; H01M10/54
Foreign References:
| JP2020064855A | 2020-04-23 | |||
| JP2020143329A | 2020-09-10 | |||
| JP2015195129A | 2015-11-05 | |||
| JP6378502B2 | 2018-08-22 |
Other References:
Journal of the Mining and Metallurgical Institute of Japan, 25 October 1988, vol. 104, no. 1208, pp. 751-753, see in particular, fig. 3, etc.
See also references of EP 4215291A4
See also references of EP 4215291A4
Attorney, Agent or Firm:
HIROTA, Koichi et al. (JP)
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