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1. (WO2015122397) SCANDIUM SEPARATION METHOD

Pub. No.:    WO/2015/122397    International Application No.:    PCT/JP2015/053606
Publication Date: Fri Aug 21 01:59:59 CEST 2015 International Filing Date: Wed Feb 11 00:59:59 CET 2015
IPC: C22B 59/00
C22B 3/06
C22B 3/32
C22B 3/44
C22B 7/00
Applicants: A SCHOOL CORPORATION KANSAI UNIVERSITY
学校法人 関西大学
ISHIHARA SANGYO KAISHA, LTD.
石原産業株式会社
Inventors: SHIBATA, Junji
芝田 隼次
UESUSUKI, Yusuke
植薄 祐介
Title: SCANDIUM SEPARATION METHOD
Abstract:
This scandium separation method comprises: a step (step S1) in which an acidic water-soluble solution having a pH of less than 4 and containing scandium is prepared; a step (step S2) in which a first acidic water-soluble fluid is generated by mixing the acidic water-soluble solution and an alkali and adjusting the pH to a range of 4-7; a step (step S3) in which a scandium-containing organic solvent is generated by bringing into contact with each other the first acidic water-soluble fluid and an organic solvent including, as an extracting agent, carboxylic acid and/or carboxylate, and transferring the scandium in the first acidic water-soluble fluid to the organic solvent; and a step (step S4) in which a scandium-containing water-soluble fluid is generated by brining into contact with each other the scandium-containing organic solvent and a second acidic water-soluble fluid and transferring the scandium in the scandium-containing organic solvent to the second acidic water-soluble fluid.