- 专利标题: Method for recovering scandium
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申请号: US16077821申请日: 2017-02-21
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公开(公告)号: US11214849B2公开(公告)日: 2022-01-04
- 发明人: Hidemasa Nagai , Keiji Kudo , Itsumi Matsuoka , Yoshitomo Ozaki , Hirofumi Shoji , Shin-ya Matsumoto , Tatsuya Higaki
- 申请人: SUMITOMO METAL MINING CO., LTD.
- 申请人地址: JP Tokyo
- 专利权人: SUMITOMO METAL MINING CO., LTD.
- 当前专利权人: SUMITOMO METAL MINING CO., LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: Locke Lord LLP
- 代理商 James E. Armstrong, IV; Nicholas J. DiCeglie, Jr.
- 优先权: JPJP2016-032039 20160223
- 国际申请: PCT/JP2017/006327 WO 20170221
- 国际公布: WO2017/146034 WO 20170831
- 主分类号: C22B59/00
- IPC分类号: C22B59/00 ; C01F17/212 ; C01F17/17 ; C01F17/13 ; C22B3/26 ; C01G53/11 ; C22B3/08 ; C22B3/42
摘要:
A method for recovering scandium, by which scandium is able to be recovered from nickel oxide ore. The present invention comprises: a leaching step S1 for obtaining a leachate by leaching a nickel oxide ore containing scandium with use of sulfuric acid; a neutralization step by adding a neutralizing agent thereto; a sulfurization step by adding a sulfurizing agent to the post-neutralization solution; an ion exchange step by bringing the post-sulfurization solution into contact with a chelating resin; a dissolution step by obtaining a precipitate of scandium hydroxide by adding an alkali into the scandium eluent, and subsequently adding an acid solution to the scandium hydroxide; a solvent extraction step by bringing the scandium acid dissolution liquid into contact with a neutral extractant; and a scandium recovery step by adding oxalic acid to the extraction residue and subsequently roasting the salt of scandium oxalate.
公开/授权文献
- US20210254193A1 METHOD FOR RECOVERING SCANDIUM 公开/授权日:2021-08-19
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