- 专利标题: METHOD FOR PRODUCING SOLUTIONS CONTAINING NICKEL OR COBALT
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申请号: US16329400申请日: 2017-09-01
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公开(公告)号: US20190194031A1公开(公告)日: 2019-06-27
- 发明人: Hideki Ohara , Toshirou Tan , Masatoshi Takano , Satoshi Asano , Hiroshi Kobayashi
- 申请人: SUMITOMO METAL MINING CO., LTD.
- 优先权: JP2016-172877 20160905
- 国际申请: PCT/JP2017/031569 WO 20170901
- 主分类号: C01G53/10
- IPC分类号: C01G53/10 ; C01G53/00 ; C01G51/10 ; C01G51/00 ; B01D11/04
摘要:
Provided is a method for producing solutions, by which two solutions, namely a high-purity nickel sulfate solution and a mixed solution of nickel sulfate and cobalt sulfate are able to be obtained at the same time from a sulfuric acid solution containing nickel, cobalt and calcium. A method for producing solutions according to the present invention uses a sulfuric acid solution containing nickel, cobalt and calcium and performs a first step S1 for producing a mixed solution of nickel sulfate and cobalt sulfate from the sulfuric acid solution and a second step S2 for producing a solution of nickel sulfate from the sulfuric acid solution in parallel. In the first step, the sulfuric acid solution is subjected to solvent extraction by an extractant, thereby obtaining a first organic solvent after extraction In the second step, the sulfuric acid solution is subjected to solvent extraction by means of an extractant.
公开/授权文献
- US10577255B2 Method for producing solutions containing nickel or cobalt 公开/授权日:2020-03-03