Title:
METHOD FOR RECOVERING SCANDIUM AND ION-EXCHANGE TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/059941
Kind Code:
A1
Abstract:
For recovering scandium from an acidic solution containing at least scandium and chromium via an ion-exchange treatment using a chelate resin, the present invention provides a method for efficiently concentrating the scandium while suppressing reductions in chelate resin productivity. In a method for recovering scandium from an acidic solution that contains at least scandium and chromium, the present invention is characterized by comprising an ion-exchange treatment step for adsorbing the scandium in the acidic solution onto a chelate resin by bringing the acidic solution into contact with the chelate resin, and thereafter obtaining a scandium eluate, wherein the acidic solution is brought into contact with the chelate resin in the ion-exchange treatment step with the temperature of the acidic solution being held in the range from above 20°C up to and including 50°C.
Inventors:
OHARA GO (JP)
KOBAYASHI HIROSHI (JP)
NAKAI OSAMU (JP)
KOBAYASHI HIROSHI (JP)
NAKAI OSAMU (JP)
Application Number:
PCT/JP2020/033774
Publication Date:
April 01, 2021
Filing Date:
September 07, 2020
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B59/00; B01J45/00; B01J49/50; C22B3/08; C22B3/24; C22B3/42; C22B3/44
Foreign References:
| JP2017150019A | 2017-08-31 | |||
| JP2015163729A | 2015-09-10 | |||
| JP2014218719A | 2014-11-20 | |||
| JP2016065283A | 2016-04-28 | |||
| JP2014177391A | 2014-09-25 | |||
| JP2007327126A | 2007-12-20 | |||
| JPH03291332A | 1991-12-20 | |||
| JP2013095979A | 2013-05-20 | |||
| JP2015183228A | 2015-10-22 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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