SEPARATION OF RARE EARTHS BY SOLVENT EXTRACTION
Patent
·
OSTI ID:4117078
A process is given for separating lanthanide rare earths from each other from an aqueous mineral acid solution, e.g., hydrochloric or nitric acid of a concentration of above 3 M, preferably 12 to 16 M, by extraction with a water- immiscible alkyl phosphate, such as tributyl phosphate or a mixture of mono-, di- and tributyl phosphate, and fractional back-extraction with mineral acid whereby the lanthanides are taken up by the acid in the order of increasing atomic number.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-007437
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 2955913
- OSTI ID:
- 4117078
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- United States
- Language:
- English
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