Title:
METHOD FOR PRODUCING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2022/264569
Kind Code:
A1
Abstract:
The present invention provides a method by which a valuable metal is able to be recovered with a high recovery rate by effectively and efficiently separating impurities, in particular iron, from a starting material to be processed. A method for producing a valuable metal that contains cobalt (Co), the method comprising: a preparation step in which a starting material that contains at least iron (Fe) and a valuable metal is prepared; a melting step in which a melt is obtained by heating and melting the starting material, and the melt is subsequently formed into a molten material that contains an alloy and slag; and a slag separation step in which the slag is separated from the molten material, thereby recovering the alloy that contains the valuable metal. In the preparation step, the Fe/Co mass ratio in the starting material is controlled to 0.5 or less; and in the melting step, the Co content in the slag that is obtained by heating and melting the starting material is set to 1% by mass or less.
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Inventors:
YAMASHITA YU (JP)
Application Number:
PCT/JP2022/011395
Publication Date:
December 22, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B5/10; C22B7/00; C22B23/02
Foreign References:
| JP2017526820A | 2017-09-14 | |||
| JP2012251220A | 2012-12-20 | |||
| JP2012224877A | 2012-11-15 | |||
| JP2013091826A | 2013-05-16 | |||
| JP2012057238A | 2012-03-22 | |||
| JP6542354B2 | 2019-07-10 | |||
| JP5853585B2 | 2016-02-09 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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