Title:
METHOD OF PRODUCING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2022/264570
Kind Code:
A1
Abstract:
Provided is a method of effectively and efficiently separating impurities, in particular, iron contained in a raw material to be processed, and recovering valuable metal at a high rate of recovery. Provided is a method of producing valuable metal including cobalt (Co), comprising: a preparation step for preparing a raw material containing at least iron (Fe) and the valuable metal; a fusing step for heating and fusing the raw material into a melt and thereafter making the melt into a fusion containing alloy and slag; and a slag separation step for separating the slag out from the fusion to recover alloy containing the valuable metal. In the preparation step, the mass ratio of Fe/Co in the raw material is controlled to 0.5 or less. In the fusion step, the oxygen partial pressure in the melt generated by heating and fusing the raw material is made to be 10-9.0 atm or less.
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Inventors:
YAMASHITA YU (JP)
Application Number:
PCT/JP2022/011398
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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