Title:
METHOD FOR RECOVERING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2022/009657
Kind Code:
A1
Abstract:
The present invention provides a method capable of precisely controlling the oxygen partial pressure required when raw materials are melted, and thereby more efficiently recovering valuable metals. Provided is a method for recovering valuable metals (Cu, Ni, Co), the method comprising the following steps: a step of preparing a charging material containing at least phosphorus (P), iron (Fe), and a valuable metal as raw materials; a step of heating and melting the raw materials to form a melt and subsequently forming the melt into a molten body including alloy and slag; and a step of separating the slag from the molten body and recovering the alloy including valuable metals, wherein when the raw materials are heated and molten, the oxygen partial pressure in the melt is directly measured using an oxygen analyzer, and the oxygen partial pressure is controlled on the basis of the obtained measurement result.
Inventors:
YAMASHITA YU (JP)
Application Number:
PCT/JP2021/023472
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)
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