Title:
METHOD FOR RECOVERING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2022/009656
Kind Code:
A1
Abstract:
The present invention provides a method which is capable of more strictly controlling the oxygen partial pressure required during the melting of a starting material, thereby being capable of recovering a valuable metal more efficiently. A method for recovering valuable metals (Cu, Ni, Co), said method comprising the following steps: a step for preparing, as a starting material, a charge that contains at least phosphorus (P), manganese (Mn) and valuable metals; a step for heating and melting the starting material into a melt, and subsequently forming the melt into a molten material that contains an alloy and slag; and a step for recovering the alloy that contains valuable metals by separating the slag from the molten material. With respect to this method for recovering valuable metals, the oxygen partial pressure in the melt is directly measured with use of an oxygen analyzer when the starting material is heated and melted, and the oxygen partial pressure is controlled on the basis of the thus-obtained measurement result.
Inventors:
YAMASHITA YU (JP)
Application Number:
PCT/JP2021/023471
Publication Date:
January 13, 2022
Filing Date:
June 21, 2021
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
B09B3/00; C22B7/00; C22B15/00; C22B23/02; H01M10/54
Domestic Patent References:
| WO2020013294A1 | 2020-01-16 |
Foreign References:
| JPH0813052A | 1996-01-16 | |||
| JPS61261445A | 1986-11-19 | |||
| JP2003160819A | 2003-06-06 | |||
| JPH0242354B2 | 1990-09-21 | |||
| JP5853585B2 | 2016-02-09 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
Download PDF: