Title:
A recovery method of scandium
Document Type and Number:
Japanese Patent JP6206358
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a scandium recovery method capable of efficiently recovering scandium by effectively separating scandium, and uranium and thorium from hydroxides containing uranium and thorium together with scandium.SOLUTION: A scandium recovery method according to the present invention includes: a hydrochloric acid dissolution step S1 of adding hydrochloric acid to hydroxides containing scandium, uranium, and thorium, obtained by neutralizing a leachate prepared by acid leaching of nickel oxide ore, to dissolve the hydroxides to obtain a hydrochloric acid acidic solution; a solvent extraction step S2 of adding a neutral extracting agent to the hydrochloric acid acidic solution to perform solvent extraction; and a scandium recovery step S3 of adding oxalic acid to a raffinate obtained by the solvent extraction to generate an oxalate precipitate containing scandium to recover the scandium.SELECTED DRAWING: Figure 1
Inventors:
Keiji Kudo
Hidemasa Nagai
Shinya Matsumoto
Tatsuya Higaki
Hiroshi Shoji
Matsuoka Hitomi
Yoshichi Ozaki
Hidemasa Nagai
Shinya Matsumoto
Tatsuya Higaki
Hiroshi Shoji
Matsuoka Hitomi
Yoshichi Ozaki
Application Number:
JP2014174253A
Publication Date:
October 04, 2017
Filing Date:
August 28, 2014
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B59/00; C22B3/04; C22B3/10; C22B3/26; C22B3/44
Domestic Patent References:
| JP10212532A | ||||
| JP36017456B1 | ||||
| JP38001862B1 | ||||
| JP2014001430A |
Foreign References:
| US5787332 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi