Process for producing uranium oxide rich compositions from urani

Details Process for producing uranium oxide rich compositions from urani Process for producing uranium oxide rich compositions from urani

1976-03-03

1978-05-23

Padgett, Benjamin R.

Compositions

Organic luminescent material containing compositions

Scintillating or lasing compositions

423261, C01G 4302

Patent

active

040909760

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 being separated by a shielding gas as 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. In another embodiment, 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.

REFERENCES:
patent: 3786120 (1974-01-01), DeHollander et al.
patent: 3790493 (1974-02-01), Dada et al.
patent: 3796672 (1974-03-01), Dada et al.
patent: 3808145 (1974-04-01), Packard et al.

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