Title:
合金の処理方法
Document Type and Number:
Japanese Patent JP7420203
Kind Code:
B2
Abstract:
To provide a method for 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 or the like.SOLUTION: An alloy treatment method for obtaining a solution containing nickel and/or cobalt from an alloy containing nickel and/or cobalt, and copper includes a leaching step of adding an acid solution in a state where a sulfurizing agent coexists to an alloy, and subjecting the mixture to leaching treatment, and obtaining a leachate and leaching residues. In the leaching step, the leaching treatment is performed so that copper concentration in a reaction solution is maintained in a range of 0.5 g/L or more and 15 g/L or less by adding a divalent copper ion source. Further, in the leaching step, the leaching treatment is performed so that an oxidation reduction potential of the reaction solution is maintained to be 50 mV or more with a silver/silver chloride electrode as a reference electrode.SELECTED DRAWING: Figure 1
Inventors:
Hiroshi Takenouchi
Hiroshi Shoji
Itsumi Matsuoka
Shota Mijo
Takumi Matsuki
Satoshi Asano
Shinichi Hiragori
Hiroshi Shoji
Itsumi Matsuoka
Shota Mijo
Takumi Matsuki
Satoshi Asano
Shinichi Hiragori
Application Number:
JP2022188423A
Publication Date:
January 23, 2024
Filing Date:
November 25, 2022
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B3/06; C22B3/44; C22B7/00; C22B23/00; H01M10/54
Domestic Patent References:
| JP2021147686A | ||||
| JP2019108586A |
Foreign References:
| WO2021166755A1 | ||||
| CN111807388A |
Attorney, Agent or Firm:
Masayuki Shobayashi
Kazuyoshi Hayashi
Kazuyoshi Hayashi