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Title: Post oxidation process for uranium dioxide rich compositions

Abstract

A process is presented for converting gaseous UF/sub 6/ to an oxide. The process comprises introducing to a reaction zone in the presence of an active flame maintained in the reaction zone, a first gaseous reactant comprising a mixture of UF/sub 6/ and an oxygencontaining carrier gas and a second gaseous reactant comprising a reducing gas and temporarily separating the first and second gaseous reactants with a shielding gas which temporarily prevents substantial mixing and reaction between these gaseous reactants. The first and second gaseous reactants ultimately react to give a particulate UO/sub 2/ rich composition in the presence of residual reducing gas. An oxygen-containing gas as a third gaseous reactant is introduced at a time when the UO/sub 6/ conversion to the UO/sub 2/-rich composition is substantially complete. This results in oxidizing the UO/sub 2/-rich composition to a higher oxide of uranium with conversion of the residual reducing gas to its oxidized form. This process is adaptable to yield oxide products of uranium in any state of oxidation between UO/ sub 2/ and U/sub 3/O/sub 8/. (Official Gazette)

Inventors:
; ;
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4336234
Patent Number(s):
US 3790493
Assignee:
to General Electric Co.
NSA Number:
NSA-29-029099
Resource Type:
Patent
Resource Relation:
Patent File Date: 1971 Apr 01; Other Information: C01g43/02. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N40240* -Chemistry-Inorganic, Organic, & Physical Chemistry-Feed Materials Processing; *URANIUM DIOXIDE- CHEMICAL PREPARATION; *URANIUM HEXAFLUORIDE- CONVERSION; *URANIUM OXIDES- CHEMICAL PREPARATION; CHEMICAL REACTIONS; GASES; OXIDATION; VALENCE

Citation Formats

Dada, A G, De Hollander, W R, and Sloat, R J. Post oxidation process for uranium dioxide rich compositions. United States: N. p., 1974. Web.
Dada, A G, De Hollander, W R, & Sloat, R J. Post oxidation process for uranium dioxide rich compositions. United States.
Dada, A G, De Hollander, W R, and Sloat, R J. Fri . "Post oxidation process for uranium dioxide rich compositions". United States.
@article{osti_4336234,
title = {Post oxidation process for uranium dioxide rich compositions},
author = {Dada, A G and De Hollander, W R and Sloat, R J},
abstractNote = {A process is presented for converting gaseous UF/sub 6/ to an oxide. The process comprises introducing to a reaction zone in the presence of an active flame maintained in the reaction zone, a first gaseous reactant comprising a mixture of UF/sub 6/ and an oxygencontaining carrier gas and a second gaseous reactant comprising a reducing gas and temporarily separating the first and second gaseous reactants with a shielding gas which temporarily prevents substantial mixing and reaction between these gaseous reactants. The first and second gaseous reactants ultimately react to give a particulate UO/sub 2/ rich composition in the presence of residual reducing gas. An oxygen-containing gas as a third gaseous reactant is introduced at a time when the UO/sub 6/ conversion to the UO/sub 2/-rich composition is substantially complete. This results in oxidizing the UO/sub 2/-rich composition to a higher oxide of uranium with conversion of the residual reducing gas to its oxidized form. This process is adaptable to yield oxide products of uranium in any state of oxidation between UO/ sub 2/ and U/sub 3/O/sub 8/. (Official Gazette)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {2}
}