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Title:
GALLIUM EXTRACTION AGENT AND GALLIUM EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/030395
Kind Code:
A1
Abstract:
Provided are an extraction agent and extraction method that selectively extract and, at a low cost, recover gallium from an acidic solution containing gallium and zinc. The gallium extraction agent comprises an amide derivative represented by general formula (I). In the formula, R1 and R2 each indicate the same or 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. By extracting gallium from an acidic solution containing gallium and zinc by means of solvent extraction using the extraction agent, it is possible to selectively extract gallium.

Inventors:
GOTO MASAHIRO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
Application Number:
PCT/JP2013/062481
Publication Date:
February 27, 2014
Filing Date:
April 26, 2013
Export Citation:
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Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B58/00; B01D11/04; C22B3/26
Foreign References:
JP2012102062A2012-05-31
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)
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