Title:
銅とニッケルおよびコバルトの分離方法
Document Type and Number:
Japanese Patent JP6939506
Kind Code:
B2
Abstract:
Provided is a method for separating copper from nickel and cobalt, which can efficiently and selectively separate copper from nickel and cobalt in a substance containing copper, nickel, and cobalt in a waste lithium ion battery, etc. In this method for separating copper from nickel and cobalt, a substance containing copper, nickel, and cobalt is sulfurated to obtain a sulfide, the obtained sulfide that contains copper, nickel, and cobalt is brought into contact with an acid solution to obtain a solid containing copper and a leachate containing nickel and cobalt. Here, the sulfide preferably contains copper sulfide as a main component, and contains nickel metal and cobalt metal. In addition, when bringing the sulfide into contact with the acid solution, the added amounts of the sulfide and the acid solution are preferably adjusted such that the oxidation-reduction potential of the obtained leachate is maintained at 150 mV or less where a silver/silver chloride electrode is a reference electrode.
Inventors:
Hiroshi Takenouchi
Kobayashi Sora
Hiroshi Shoji
Tatsuya Higaki
Kobayashi Sora
Hiroshi Shoji
Tatsuya Higaki
Application Number:
JP2017242225A
Publication Date:
September 22, 2021
Filing Date:
December 18, 2017
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B23/00; B09B3/00; C22B3/06; C22B3/08; C22B3/10; C22B3/44; C22B7/00; C22B15/00
Domestic Patent References:
| JP2009097076A | ||||
| JP57131332A |
Foreign References:
| WO2013077296A1 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi