Method for recovering rare earth elements from rare earth raw materials including rare earth elements
AssigneeKorea Institute of Geoscience and Mineral Resources
InventorsRina KIM, Seo Jin HEO, Ho Sung YOON, Chul Joo KIM, Kyeong Woo CHUNG, Sujeong LEE
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Abstract
The present disclosure relates to a method for recovering rare earth elements from rare earth raw materials, the method including steps of: alkali-treating a mixture of a reducing agent including a reductive metal having a lower standard reduction potential than goethite and the rare earth raw materials; and leaching the rare earth elements from the alkali-treated mixture using a deep eutectic solvent, wherein the rare earth raw materials include 10% by weight or more of goethite.
Claims11
A method for recovering rare earth elements from rare earth raw materials, the method comprising steps of:
- alkali-treating a mixture of a reducing agent including a reductive metal having a lower standard reduction potential than goethite and the rare earth raw materials;
- and
- leaching the rare earth elements from the alkali-treated mixture using a deep eutectic solvent, wherein the rare earth raw materials include 10% by weight or more of goethite.
Dependencies are inferred from the claim text.