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Patent Searching and Data


Title:
ALLOY TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/193096
Kind Code:
A1
Abstract:
Provided is an alloy treatment method comprising separating copper and zinc from an alloy containing nickel and/or cobalt and also containing copper and zinc to obtain nickel and/or cobalt selectively. An alloy treatment method is provided, in which a solution containing nickel and/or cobalt is obtained from an alloy containing nickel and/or cobalt and also containing copper and zinc, the method comprising: a leaching step for subjecting the alloy to a leaching treatment with an acid under the condition where a sulfating agent is present to produce a leachate; a reduction step for subjecting the leachate to a reduction treatment using a reducing agent to produce a reduced solution; an oxidation/neutralization step for adding an oxidizing agent and a neutralizing agent to the reduced solution to produce a neutralized solution containing nickel and/or cobalt and also containing zinc; and a solvent extraction step for subjecting the neutralized solution to a solvent extraction procedure using an acidic phosphorus compound-based extractant to produce a solution containing nickel and/or cobalt.

Inventors:
KUDOU KEIJI (JP)
ASANO SATOSHI (JP)
HEGURI SHIN-ICHI (JP)
TAKENOUCHI HIROSHI (JP)
SHOUJI HIROFUMI (JP)
MATSUOKA ITSUMI (JP)
SANJO SHOTA (JP)
MATSUGI TAKUMI (JP)
Application Number:
PCT/JP2021/009778
Publication Date:
September 30, 2021
Filing Date:
March 11, 2021
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
B09B3/00; C22B3/06; C22B3/38; C22B3/44; C22B7/00; C22B19/00; C22B23/00; H01M10/54
Foreign References:
JP2015183292A2015-10-22
JP2016033232A2016-03-10
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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