Production of sized particles of uranium oxides and uranium oxyfluorides
Patent
·
OSTI ID:7333160
A process is claimed for converting uranium hexafluoride (UF/sub 6/) to uranium dioxide (UO/sub 2/) of a relatively large particle size in a fluidized bed reactor by mixing uranium hexafluoride with a mixture of steam and hydrogen and by preliminary reacting in an ejector gaseous uranium hexafluoride with steam and hydrogen to form a mixture of uranium and oxide and uranium oxyfluoride seed particles of varying sizes, separating the larger particles from the smaller particles in a cyclone separator, recycling the smaller seed particles through the ejector to increase their size, and introducing the larger seed particles from the cyclone separator into a fluidized bed reactor where the seed particles serve as nuclei on which coarser particles of uranium dioxide are formed. 9 claims, 2 drawing figures.
- Assignee:
- Westinghouse Electric Corp.
- Patent Number(s):
- US 3978194
- OSTI ID:
- 7333160
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
050700* -- Nuclear Fuels-- Fuels Production & Properties
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTORS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDIZED BED
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
FUEL PARTICLES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
STEAM
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM FLUORIDES
URANIUM HEXAFLUORIDE
URANIUM OXIDES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTORS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDIZED BED
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
FUEL PARTICLES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
STEAM
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM FLUORIDES
URANIUM HEXAFLUORIDE
URANIUM OXIDES