Dissolution and separation of rare earth metals

Mudring, Anja-Verena; Prodius, Denis; Nlebedim, Cajetan Ikenna

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DOE OSTI · 1650890

Dissolution and separation of rare earth metals

Mudring, Anja-Verena·Prodius, Denis·Nlebedim, Cajetan Ikenna

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Abstract

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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Mudring, Anja-Verena, Prodius, Denis, Nlebedim, Cajetan Ikenna. 2020-05-12. Dissolution and separation of rare earth metals. https://www.osti.gov/biblio/1650890

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