Uranium-preextraction in zirconium/hafnium separations processs
This patent describes an improvement in a process for recovering zirconium values from uranium containing zircon ore. The process comprising a fluidized bed carbochlorination of the zircon ore at 800{degrees}--1250{degrees} C., producing a relatively impure, hafnium-containing zirconium tetrachloride stream and by-product silicon tetrachloride, which silicon tetrachloride by-product is separated by differential condensation, and wherein uranium chloride is volatilized at the ore chlorinator temperature and follows as an impurity in the zirconium-hafnium tetrachloride stream, mixing the zirconium-hafnium tetrachloride with water to produce a zirconium-hafnium oxychloride solution, and removing iron impurities by liquid--liquid iron extraction with a methyl isobutyl ketone extractant.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Patent Number(s):
- US 4913884; A
- Application Number:
- PPN: US 7-268101A
- OSTI ID:
- 6776365
- Country of Publication:
- United States
- Language:
- English
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EXTRACTION OF ZIRCONIUM FROM NIGERIAN HIGH-HAFNIUM CONCENTRATE
Hafnium
Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE COMPOUNDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINATION
CHLORINE COMPOUNDS
ELEMENTS
EXTRACTION
HAFNIUM
HALIDES
HALOGEN COMPOUNDS
HALOGENATION
KETONES
METALS
ORES
ORGANIC COMPOUNDS
RECOVERY
SEPARATION PROCESSES
SOLVENT EXTRACTION
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
URANIUM CHLORIDES
URANIUM COMPOUNDS
URANIUM ORES
ZIRCONIUM
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPOUNDS