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Patent Searching and Data


Title:
SCANDIUM EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2013/136941
Kind Code:
A1
Abstract:
Provided is a method for selectively extracting and inexpensively recovering scandium from an acidic solution containing calcium, magnesium, and scandium. The scandium extraction method according to the present invention involves subjecting an acidic solution containing calcium, magnesium, and scandium to solvent extraction using an extraction agent consisting of an amide derivative represented by the general formula below. In the formula, R1 and R2 represent the same or different alkyl groups, and R3 is a hydrogen atom or alkyl group. The amide derivative preferably consistsi of one or more derivatives selected from glycine amide derivatives, histidine amide derivatives, lysine amide derivatives, and aspartic acid amide derivatives. The pH of the acidic solution is preferably pre-adjusted to between 1 and 4.

Inventors:
GOTO MASAHIRO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
Application Number:
PCT/JP2013/054419
Publication Date:
September 19, 2013
Filing Date:
February 21, 2013
Export Citation:
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Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B59/00; C22B3/26
Domestic Patent References:
WO2012005183A12012-01-12
Foreign References:
JPH09291320A1997-11-11
JP2007327085A2007-12-20
JPH0474711A1992-03-10
JP2000313928A2000-11-14
JPH09291320A1997-11-11
JP2007327085A2007-12-20
Other References:
See also references of EP 2712940A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
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