Title:
METHOD FOR RECOVERING VALUABLE METALS
Document Type and Number:
WIPO Patent Application WO/2023/026769
Kind Code:
A1
Abstract:
Provided is a method for recovering valuable metals that makes it possible to efficiently recover valuable metals at a high recovery rate. The present invention is a method for recovering the valuable metal from a raw material that contains the valuable metal. This method comprises: a preparation step for preparing a raw material; a melting step for introducing the raw material into a melting furnace and heating and melting the raw material to yield an alloy and a slag; and a slag separation step for separating the slag and recovering a valuable metal-containing alloy. The redox degree is adjusted in the melting step by introducing, as a reducing agent, scrap of a wound body, the wound body being an electrode assembly in which a positive electrode and a negative electrode are wound insulated from each other by a separator and carbon is used in the negative electrode.
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Inventors:
YAMASHITA YU (JP)
NAGAKURA TOSHIHIKO (JP)
HAGIO TOMOYA (JP)
NAGAKURA TOSHIHIKO (JP)
HAGIO TOMOYA (JP)
Application Number:
PCT/JP2022/029322
Publication Date:
March 02, 2023
Filing Date:
July 29, 2022
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B5/02; C22B1/02; C22B7/00; C22B15/00; C22B23/02
Foreign References:
| JP2017509786A | 2017-04-06 | |||
| JP2011119092A | 2011-06-16 | |||
| JP2021066903A | 2021-04-30 | |||
| JPH08218128A | 1996-08-27 | |||
| JP2017526820A | 2017-09-14 | |||
| JP2013091826A | 2013-05-16 | |||
| JP5818798B2 | 2015-11-18 | |||
| JP5853585B2 | 2016-02-09 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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