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Dissolution and separation of rare earth metals 发明申请

2023-08-12 2550 802K 0

专利信息

申请日期 2025-08-25 申请号 US15998079
公开(公告)号 US20180312941A1 公开(公告)日 2018-11-01
公开国别 US 申请人省市代码 全国
申请人 Iowa State University Research Foundation Inc
简介 A chemical dissolution method is provided for use in recycling rare earth metal-containing material such as permanent magnet material including end-of-life magnet shapes, magnet scrap and Terfenol-D alloy material by mixing the rare earth metal-containing material and an aqueous solution of a copper (II) salt to dissolve the material in the solution. The dissolved rare earth metal is then precipitated from the aqueous solution as a rare earth metal compound, such as a rare earth metal oxalate, sulfate or phosphate from which rare earth metal oxide can be obtained.


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