Processes for rare earths recovery from wet-process phosphoric acid
US9869005B2 · kind B2 · utility
2Cited by
3References
37Claims
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Key dates
| Filing date | Jul 21, 2013 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Nov 10, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In alternative embodiments, the invention provides processes and methods for extracting and recovering rare earth materials from a wet-process phosphoric acid using one or more continuous ion exchange resin systems. In alternative embodiments, the method is particularly suited for use in extracting and recovering multiple rare earth materials present in low concentrations contained in wet-process phosphoric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.