- 专利标题: Scandium recovery process
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申请号: US15118250申请日: 2015-02-18
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公开(公告)号: US10190189B2公开(公告)日: 2019-01-29
- 发明人: Toshihiko Nagakura , Yoshitomo Ozaki , Hidemasa Nagai , 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: JP2014-029537 20140219
- 国际申请: PCT/JP2015/054434 WO 20150218
- 国际公布: WO2015/125821 WO 20150827
- 主分类号: C22B59/00
- IPC分类号: C22B59/00 ; C22B7/00 ; C22B3/06
摘要:
The purpose of the present invention is to recover roughly purified scandium, which is purified to an extent acceptable for a technique for highly purifying scandium, efficiently and without any complicated operation from a neutralization sediment (drainage sediment) generated in neutralizing acid mine drainage which contains a sulfur component. This scandium recovery process includes a washing step (S1) for washing a neutralization sediment (drainage sediment) and a dissolution step (S2) for subjecting the washed sediment obtained in the washing step (S1) to dissolution in an acid. It is preferable that the process further includes a re-dissolution step (S3) for subjecting a dissolution residue which remains after the dissolution in the dissolution step (S2) to dissolution with an acid. In the washing step (S1), the neutralization sediment is washed with a washing liquid until the pH of the post-washing liquid generated in the washing step becomes 6 or higher.
公开/授权文献
- US20170175225A1 SCANDIUM RECOVERY PROCESS 公开/授权日:2017-06-22
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