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公开(公告)号：US09347115B2
公开(公告)日：2016-05-24
申请号：US14356322
申请日：2012-11-01
发明人： Kazunari Maeba , Yukie Kawakami , Keiji Kudo , Masatoshi Takano , Hitoshi Ishida , Satoshi Asano , Masahiro Tanaka
CPC分类号： C22B59/00 , C22B3/44 , C22B7/007 , Y02P10/234
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.
摘要翻译： 本发明的目的是提供一种回收稀土元素的方法，其能够在不使用任何昂贵的化学品，溶剂等的情况下以高回收率有效地回收稀土元素。 在本发明中，使除硫酸根离子以外的水溶性盐与含有稀土元素的水溶液共存，然后向该水溶液中添加碱金属硫酸盐，由此生成双硫酸盐沉淀物 的稀土元素。
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公开(公告)号：US20140322107A1
公开(公告)日：2014-10-30
申请号：US14356322
申请日：2012-11-01
发明人： Kazunari Maeba , Yukie Kawakami , Keiji Kudo , Masatoshi Takano , Hitoshi Ishida , Satoshi Asano , Masahiro Tanaka
IPC分类号： C22B59/00
CPC分类号： C22B59/00 , C22B3/44 , C22B7/007 , Y02P10/234
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.
摘要翻译： 本发明的目的是提供一种回收稀土元素的方法，其能够在不使用任何昂贵的化学品，溶剂等的情况下以高回收率有效地回收稀土元素。 在本发明中，使除硫酸根离子以外的水溶性盐与含有稀土元素的水溶液共存，然后向该水溶液中添加碱金属硫酸盐，由此生成双硫酸盐沉淀物 的稀土元素。
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