Title:
METHOD FOR ISOLATING VALUABLE METAL
Document Type and Number:
WIPO Patent Application WO/2014/030396
Kind Code:
A1
Abstract:
Provided is a method that selectively extracts and, at a low cost, recovers indium from an acidic solution containing indium and gallium. The present invention is a method that is for isolating a valuable metal and that, by means of subjecting an acidic solution containing indium and gallium to a solvent extraction that is by means of an extraction agent comprising an amide derivative represented by a general formula, extracts indium from the acidic solution. In the formula, R1 and R2 each indicate the same or a different alkyl group, R3 indicates a hydrogen atom or an alkyl group, and R4 indicates a hydrogen atom or any given group, other than an amino group, bonded to the α-carbon as an amino acid. The general formula preferably has a glycine unit, a histidine unit, a lysine unit, an aspartic acid unit, or an N-methylglycine unit.
Inventors:
GOTO MASAHIRO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
Application Number:
PCT/JP2013/062482
Publication Date:
February 27, 2014
Filing Date:
April 26, 2013
Export Citation:
Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
SUMITOMO METAL MINING CO (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B58/00; B01D11/04; C07C237/06; C07D233/64; C22B3/26; C22B7/00
Foreign References:
| JP2012102062A | 2012-05-31 | |||
| JPH0448038A | 1992-02-18 |
Other References:
MORIZONO HIROFUMI ET AL.: "Liquid-liquid extraction of transition metal ions with an alkylhistidine extractant", SEPARATION AND PURIFICATION TECHNOLOGY, vol. 80, no. 2, 29 July 2011 (2011-07-29), pages 390 - 395
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
Right wood Masayuki (JP)
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