Apparatus for the continuous precipitation of uranium peroxide
Patent
·
OSTI ID:6270601
A process and apparatus are described for the production of pourable, directly compactable uranium dioxide powder by continuous precipitation of uranium peroxide from a stirred uranyl nitrate solution at a pH of 1-2.5 with hydrogen peroxide, calcining of the peroxide at 500/sup 0/-800/sup 0/C. And subsequent reduction at 550/sup 0/-750/sup 0/C. Precipitation solution contains 70-150 g/l of uranium and 0.80 g/l of ammonium nitrate and is treated with 15-20% aqueous hydrogen peroxide solution in the ratio of U:H/sub 2/O/sub 2/ from 1:1.5 to 1:3 and there is led through the solution a mixture of ammoni and air having an air-ammonia volume ratio of 1:0.3-0.6.
- Assignee:
- IFI; EDB-81-114904
- Patent Number(s):
- US 4271127
- OSTI ID:
- 6270601
- 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
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ACTINIDE COMPOUNDS
CHALCOGENIDES
CONTAINERS
EQUIPMENT
FUEL FABRICATION PLANTS
NOZZLES
NUCLEAR FACILITIES
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
PRECIPITATION
PRODUCTION
ROTORS
SEPARATION PROCESSES
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
URANIUM PEROXIDES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ACTINIDE COMPOUNDS
CHALCOGENIDES
CONTAINERS
EQUIPMENT
FUEL FABRICATION PLANTS
NOZZLES
NUCLEAR FACILITIES
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
PRECIPITATION
PRODUCTION
ROTORS
SEPARATION PROCESSES
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
URANIUM PEROXIDES