Title:
COBALT EXTRACTANT AND COBALT EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2013/077168
Kind Code:
A1
Abstract:
Provided are a cobalt extractant capable of selectively extracting cobalt from an acidic solution containing a high concentration of manganese, and a cobalt extraction method in which the cobalt extractant is used. This cobalt extractant contains a carboxylic acid-based extractant and an oxime-based extractant, and the molar ratio between the two extractants is from 40:60 to 60:40. The carboxylic acid-based extractant is preferably selected from a versatic acid-based, naphthenic acid-based, oleic acid-based, or lauric acid-based substance or a combination thereof. The oxime-based extractant is preferably ketoxime-based. This cobalt extractant is preferably used for an acidic solution containing manganese and cobalt. The pH of the acidic solution is further preferably adjusted in advance to a range of 3.5 to 4.5 before the solution is subjected to solvent extraction using this cobalt extractant.
Inventors:
GOTO MASAHIRO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
TAKANO MASATOSHI (JP)
ASANO SATOSHI (JP)
OZAKI YOSHITOMO (JP)
KUBOTA FUKIKO (JP)
BABA YUZO (JP)
TAKANO MASATOSHI (JP)
ASANO SATOSHI (JP)
OZAKI YOSHITOMO (JP)
Application Number:
PCT/JP2012/078444
Publication Date:
May 30, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
SUMITOMO METAL MINING CO (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B23/00; B01D11/04; C22B3/26; H01M10/54
Domestic Patent References:
WO2005073415A1 | 2005-08-11 |
Foreign References:
JPS5877538A | 1983-05-10 |
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
Right wood Masayuki (JP)
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