Process and system for recovering rare earth elements
US12319982B2 · kind B2 · utility
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2References
20Claims
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Key dates
| Filing date | Mar 12, 2020 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | May 28, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present application provides a process and system for recovery of rare earth elements. In particular, the present application provides a process for obtaining a precipitate of rare earth elements (REE), comprising: (a) obtaining an acidic composition comprising the REE (such as, for example, a pregnant leach solution); (b) adding a reducing agent to the acidic composition and adjusting the pH with a basic agent; (c) adding oxalate directly to the composition formed in step (b) and mixing to form an REE oxalate precipitate; (d) removing the REE oxalate precipitate from the mixture of step (c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.