Title:
METHOD FOR PRODUCING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2022/224711
Kind Code:
A1
Abstract:
The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries, the method being capable of effectively obtaining a metal which has a reduced phosphorus content. The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries containing phosphorus, the method comprising: a melting step in which the starting material is melted, thereby obtaining a melt; and a slag separation step in which slag is separated from the melt and an alloy containing a valuable metal is recovered. According to the present invention, an alloy is recovered, while making it sure that the recovery ratio of cobalt from the starting material is from 95.0% to 99.6%, thereby suppressing the phosphorus content in the alloy to 0.1% by mass or less.
Inventors:
YABE TAKAYUKI (JP)
YAMASHITA YU (JP)
YAMASHITA YU (JP)
Application Number:
PCT/JP2022/014648
Publication Date:
October 27, 2022
Filing Date:
March 25, 2022
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B5/10; C22B7/00; C22B23/02; H01M10/54
Domestic Patent References:
| WO2020013293A1 | 2020-01-16 |
Foreign References:
| JP2019135321A | 2019-08-15 | |||
| JP2018197385A | 2018-12-13 | |||
| JP2013091826A | 2013-05-16 | |||
| JP2012224876A | 2012-11-15 | |||
| JP2012172175A | 2012-09-10 | |||
| JP2013506048W | ||||
| JP2013091826A | 2013-05-16 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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