Invention Grant
- Patent Title: Method for recovering scandium
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Application No.: US16073946Application Date: 2017-01-31
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Publication No.: US10704120B2Publication Date: 2020-07-07
- Inventor: Itsumi Matsuoka , Hiroshi Kobayashi , Yusuke Senba
- Applicant: SUMITOMO METAL MINING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO METAL MINING CO., LTD.
- Current Assignee: SUMITOMO METAL MINING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Locke Lord LLP
- Agent James E. Armstrong, IV; Nicholas J. DiCeglie, Jr.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@57efee93
- International Application: PCT/JP2017/003398 WO 20170131
- International Announcement: WO2017/135245 WO 20170810
- Main IPC: C22B3/00
- IPC: C22B3/00 ; C22B3/42 ; C22B3/44 ; C22B59/00 ; C22B3/32 ; C22B3/08

Abstract:
The present invention provides a method for easy and efficient recovery of high purity scandium from nickel oxide ore, the method comprising: an adsorption step for passing a scandium-containing solution through an ion exchange resin to adsorb scandium on the ion exchange resin; an elution step for eluting scandium from the ion exchange resin to obtain a post-elution solution; an impurity extraction step in which after the elution step, the scandium-containing solution is subjected to a first solvent extraction using an amine-based impurity extractant and is separated into a first aqueous phase containing scandium and into a first organic phase containing impurities; and a scandium extraction step in which the first aqueous phase is subjected to a second solvent extraction using an amide derivative-containing scandium extractant to obtain a second organic phase containing scandium.
Public/Granted literature
- US20190040492A1 METHOD FOR RECOVERING SCANDIUM Public/Granted day:2019-02-07
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