Invention Grant
- Patent Title: Method for recovering scandium
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Application No.: US16061684Application Date: 2016-12-13
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Publication No.: US10246761B2Publication Date: 2019-04-02
- Inventor: Tatsuya Higaki , Hidemasa Nagai , Hiroshi Kobayashi
- 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
- Priority: JP2015-244937 20151216
- International Application: PCT/JP2016/086971 WO 20161213
- International Announcement: WO2017/104629 WO 20170622
- Main IPC: C22B59/00
- IPC: C22B59/00 ; C22B3/24 ; C22B3/44

Abstract:
A method for recovering scandium is provided, which is capable of recovering highly-pure scandium from nickel oxide ore in a simple and efficient manner. The method for recovering scandium according to the present invention includes a scandium elution step S2 of passing a solution containing scandium through an ion exchange resin to obtain an eluted liquid containing scandium from the ion exchange resin, a neutralization step S3 of adding for neutralization a neutralizing agent to the eluted liquid, a solvent extraction step S4 of solvent-extracting the neutralized eluted liquid using an amine-based extracting agent, and a scandium recovering step S5 of obtaining a scandium precipitate from residual liquid separated by the solvent extraction, and then roasting the precipitate to obtain scandium oxide.
Public/Granted literature
- US10570482B2 Method for recovering scandium Public/Granted day:2020-02-25
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