发明授权
- 专利标题: Solvent extraction process for separating cobalt from nickel in aqueous solution
- 专利标题(中): 在水溶液中从钴中分离钴的溶剂萃取方法
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申请号: US12784037申请日: 2010-05-20
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公开(公告)号: US08979976B2公开(公告)日: 2015-03-17
- 发明人: David Llewellyn Jones , Tannice Marie McCoy , Keith Edward Mayhew , Chu Yong Cheng , Keith Raymond Barnard , Wensheng Zhang
- 申请人: David Llewellyn Jones , Tannice Marie McCoy , Keith Edward Mayhew , Chu Yong Cheng , Keith Raymond Barnard , Wensheng Zhang
- 申请人地址: CA Vancouver, BC AU Campbell, Australian Capital Territory
- 专利权人: CESL Limited,Commonwealth Scientific and Industrial Research Organisation
- 当前专利权人: CESL Limited,Commonwealth Scientific and Industrial Research Organisation
- 当前专利权人地址: CA Vancouver, BC AU Campbell, Australian Capital Territory
- 代理机构: Schwabe, Williamson & Wyatt
- 主分类号: C22B23/00
- IPC分类号: C22B23/00 ; C22B3/42 ; C22B3/00
摘要:
A process for separating Co from Ni in an aqueous solution comprises subjecting the solution to extraction and using kinetic differences between Ni and Co in the extraction for achieving at least a partial separation of Co from Ni. This is effected by controlling the duration of the extraction so that a major portion of Co and a minor portion of Ni is extracted from the solution to produce a loaded extractant, enriched in Co and depleted in Ni compared to the feed solution, and a Co-depleted raffinate containing Ni. In a further embodiment, the invention utilizes kinetic differences between Ni and Co during striping for effecting separation of Ni and Co. The loaded extractant can be subjected to a bulk stripping or a selective stripping operation to obtain Co and Ni solutions from which Ni and Co can be recovered. The process may be incorporated in a hydrometallurgical process for the extraction of Ni and/or Co from an ore or concentrate containing Ni and Co.