发明申请
- 专利标题: METHOD FOR RECOVERING RARE EARTH ELEMENT
- 专利标题(中): 恢复稀土元素的方法
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申请号: US14356322申请日: 2012-11-01
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公开(公告)号: US20140322107A1公开(公告)日: 2014-10-30
- 发明人: Kazunari Maeba , Yukie Kawakami , Keiji Kudo , Masatoshi Takano , Hitoshi Ishida , Satoshi Asano , Masahiro Tanaka
- 申请人: SUMITOMO METAL MINING CO., LTD.
- 优先权: JP2011-248715 20111114
- 国际申请: PCT/JP2012/078288 WO 20121101
- 主分类号: C22B59/00
- IPC分类号: C22B59/00
摘要:
The object of the present invention is to provide a method for recovering a rare earth element, which is capable of efficiently recovering a rare earth element with high recovery rate without using any expensive chemicals, solvents or the like. In the present invention, a water-soluble salt other than sulfate ions is allowed to coexist with an aqueous solution that contains a rare earth element, and then an alkali metal sulfate is added to the aqueous solution, thereby producing a precipitate of a double sulfate of the rare earth element.
公开/授权文献
- US09347115B2 Method for recovering rare earth element 公开/授权日:2016-05-24
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