Process for manufacturing uranium dioxide powder

Patent · Tue Mar 19 00:00:00 EST 1985

OSTI ID:5391238

Hasegawa, Sh I; Sekine, M; Takano, E

A process is described for manufacturing uranium dioxide powder which comprises forming fine uranium dioxide powder having a high sinterability and coarse uranium dioxide powder having a low sinterability continuously in one process by changing periodically the precipitation condition of the ammonium diuranate under the same condition of calcining and reducing of the ammonium diuranate. The thus obtained mixture of these uranium dioxide powders is suitable for uranium dioxide pellets which are a fuel of nuclear power reactor.

• Assignee: Mitsubishi Nuclear Fuel Co., Ltd. (Japan)
• Patent Number(s): US 4505882
• OSTI ID: 5391238
• Resource Relation: Patent Priority Date: Priority date 24 Mar 1983, Japan; Other Information: PAT-APPL-478372
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
URANIUM DIOXIDE
PRODUCTION
AMMONIUM URANATES
CALCINATION
FUEL PELLETS
POWDERS
PRECIPITATION
SINTERING
ACTINIDE COMPOUNDS
AMMONIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
FABRICATION
OXIDES
OXYGEN COMPOUNDS
PELLETS
PYROLYSIS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
URANATES
URANIUM COMPOUNDS
URANIUM OXIDES
050700* - Nuclear Fuels- Fuels Production & Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication