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Title:
METHOD FOR SEPARATING COPPER, NICKEL, AND COBALT
Document Type and Number:
WIPO Patent Application WO/2019/082533
Kind Code:
A1
Abstract:
Provided is a method for separating copper, nickel, and cobalt, the method being capable of efficiently and selectively separating copper, nickel, and cobalt from alloys containing copper, nickel, and cobalt, such as highly corrosive alloys containing copper, nickel, and cobalt obtained by dry-processing used lithium ion batteries. The alloy containing copper, nickel, and cobalt is brought into contact with nitric acid in the co-presence of a sulfiding agent to obtain a solid containing copper and a leachate containing nickel and cobalt.

Inventors:
HIGAKI Tatsuya (C/O Niihama Research Laboratories, SUMITOMO METAL MINING CO. LTD., 17-5, Isoura-cho, Niihama-sh, Ehime 02, 〒7920002, JP)
TAKENOUCHI Hiroshi (C/O Niihama Research Laboratories, SUMITOMO METAL MINING CO. LTD., 17-5, Isoura-cho, Niihama-sh, Ehime 02, 〒7920002, JP)
KOBAYASHI Hiroshi (C/O Niihama Research Laboratories, SUMITOMO METAL MINING CO. LTD., 17-5, Isoura-cho, Niihama-sh, Ehime 02, 〒7920002, JP)
ASANO Satoshi (C/O Niihama Research Laboratories, SUMITOMO METAL MINING CO. LTD., 17-5, Isoura-cho, Niihama-sh, Ehime 02, 〒7920002, JP)
Application Number:
JP2018/033683
Publication Date:
May 02, 2019
Filing Date:
September 11, 2018
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO., LTD. (11-3, Shimbashi 5-chome Minato-k, Tokyo 16, 〒1058716, JP)
International Classes:
C22B23/00; C22B3/06; C22B3/44; C22B7/00
Foreign References:
JP2010277868A2010-12-09
JP2007323868A2007-12-13
JP2015183292A2015-10-22
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (Sapia Tower, 1-7-12 Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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