Title:
PROCESSING METHOD OF ALLOY
Document Type and Number:
Japanese Patent JP2023035964
Kind Code:
A
Abstract:
To provide a method of efficiently obtaining a solution containing nickel and/or cobalt from an alloy containing nickel and/or cobalt, and copper of a waste lithium ion battery and the like.SOLUTION: A processing method of alloy for obtaining a solution containing nickel and/or cobalt from an alloy containing nickel and/or cobalt, and copper includes a leach process of subjecting a slurry containing the alloy to leach processing by an acid solution in the presence of a sulfating agent to obtain a leachate and a leach residue. In the leach process, the leach processing is performed by adjusting an initial concentration of the slurry containing the alloy to 100 g/L or more and 250 g/L or less. Also in the leach process, the leach processing is performed preferably while controlling an oxidation reduction potential (a silver/silver chloride electrode as a reference electrode) to 200 mV or lower. Also in the leach process, the leach processing is performed preferably in the presence of the sulfating agent by an amount in a range of 1.05-1.25 equivalent (S mol/Cu mol) to an amount of copper contained in the alloy.SELECTED DRAWING: Figure 1
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Inventors:
SHOJI HIROSHI
TAKENOUCHI HIROSHI
MATSUOKA ITSUMI
SANJO SHOTA
MATSUKI TAKUMI
HIRAGORI SHINICHI
ASANO SATOSHI
TAKENOUCHI HIROSHI
MATSUOKA ITSUMI
SANJO SHOTA
MATSUKI TAKUMI
HIRAGORI SHINICHI
ASANO SATOSHI
Application Number:
JP2022135139A
Publication Date:
March 13, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
C22B23/00; C22B1/00; C22B3/06; C22B3/44; C22B7/00; H01M10/54
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Kazuyoshi
Hayashi Kazuyoshi