Title:
METHOD FOR RECOVERING SCANDIUM
Document Type and Number:
WIPO Patent Application WO/2021/010165
Kind Code:
A1
Abstract:
The present invention provides a method for efficiently separating and removing manganese from an acid solution containing scandium and manganese. The present invention pertains to a method for recovering scandium from an acid solution containing scandium. The method is characterized: in that the acid solution contains at least manganese as an impurity element; and by including a concentration step for concentrating scandium by generating scandium hydroxide through adding of an alkali to the acid solution to perform neutralization thereof, wherein, in the concentration step, on the occasion of the neutralization, an alkali is added while the liquid surface of the acid solution, stored in a reaction container, is maintained so as not to make contact with oxygen.
Inventors:
OHARA GO (JP)
KOBAYASHI HIROSHI (JP)
NAKAI OSAMU (JP)
KOBAYASHI HIROSHI (JP)
NAKAI OSAMU (JP)
Application Number:
PCT/JP2020/025815
Publication Date:
January 21, 2021
Filing Date:
July 01, 2020
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B59/00; C01F17/212; C22B3/06; C22B3/44
Foreign References:
| JP2017137552A | 2017-08-10 | |||
| JP2018154911A | 2018-10-04 | |||
| JP2008208441A | 2008-09-11 | |||
| JP2008527164A | 2008-07-24 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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