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Title: Process for producing uranium oxide rich compositions from uranium hexafluoride

Abstract

Conversion of gaseous uranium hexafluoride to a uranium dioxide rich composition in the presence of an active flame in a reactor defining a reaction zone is achieved by separately introducing a first gaseous reactant comprising a mixture of uranium hexafluoride and a reducing carrier gas, and a second gaseous reactant comprising an oxygen-containing gas. The reactants are separated by a shielding gas as they are introduced to the reaction zone. The shielding gas temporarily separates the gaseous reactants and temporarily prevents substantial mixing and reacting of the gaseous reactants. The flame occurring in the reaction zone is maintained away from contact with the inlet introducing the mixture to the reaction zone. After suitable treatment, the uranium dioxide rich composition is capable of being fabricated into bodies of desired configuration for loading into nuclear fuel rods. Alternatively, an oxygen-containing gas as a third gaseous reactant is introduced when the uranium hexafluoride conversion to the uranium dioxide rich composition is substantially complete. This results in oxidizing the uranium dioxide rich composition to a higher oxide of uranium with conversion of any residual reducing gas to its oxidized form.

Inventors:
;
Publication Date:
OSTI Identifier:
6792954
Patent Number(s):
US 4090976
Application Number:
TRN: 79-002639
Assignee:
General Electric Co.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 3 Mar 1976
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 36 MATERIALS SCIENCE; URANIUM DIOXIDE; CHEMICAL PREPARATION; URANIUM HEXAFLUORIDE; OXIDATION; CHEMICAL REACTORS; FLAMES; ACTINIDE COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SYNTHESIS; URANIUM COMPOUNDS; URANIUM FLUORIDES; URANIUM OXIDES; 050400* - Nuclear Fuels- Feed Processing; 400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials; 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

DeHollander, W R, and Fenimore, C P. Process for producing uranium oxide rich compositions from uranium hexafluoride. United States: N. p., 1978. Web.
DeHollander, W R, & Fenimore, C P. Process for producing uranium oxide rich compositions from uranium hexafluoride. United States.
DeHollander, W R, and Fenimore, C P. Tue . "Process for producing uranium oxide rich compositions from uranium hexafluoride". United States.
@article{osti_6792954,
title = {Process for producing uranium oxide rich compositions from uranium hexafluoride},
author = {DeHollander, W R and Fenimore, C P},
abstractNote = {Conversion of gaseous uranium hexafluoride to a uranium dioxide rich composition in the presence of an active flame in a reactor defining a reaction zone is achieved by separately introducing a first gaseous reactant comprising a mixture of uranium hexafluoride and a reducing carrier gas, and a second gaseous reactant comprising an oxygen-containing gas. The reactants are separated by a shielding gas as they are introduced to the reaction zone. The shielding gas temporarily separates the gaseous reactants and temporarily prevents substantial mixing and reacting of the gaseous reactants. The flame occurring in the reaction zone is maintained away from contact with the inlet introducing the mixture to the reaction zone. After suitable treatment, the uranium dioxide rich composition is capable of being fabricated into bodies of desired configuration for loading into nuclear fuel rods. Alternatively, an oxygen-containing gas as a third gaseous reactant is introduced when the uranium hexafluoride conversion to the uranium dioxide rich composition is substantially complete. This results in oxidizing the uranium dioxide rich composition to a higher oxide of uranium with conversion of any residual reducing gas to its oxidized form.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {5}
}