Compact reaction cell for homogenizing and down-blanding highly

Chemistry of inorganic compounds – Radioactive – Uranium compound

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423301, 423261, C01G 4300

Patent

active

054117224

ABSTRACT:
The invention is a specialized reaction cell for converting uranium metal to uranium oxide. In a preferred form, the reaction cell comprises a reaction chamber with increasing diameter along its length (e.g. a cylindrical chamber having a diameter of about 2 inches in a lower portion and having a diameter of from about 4 to about 12 inches in an upper portion). Such dimensions are important to achieve the necessary conversion while at the same time affording criticality control and transportability of the cell and product. The reaction chamber further comprises an upper port and a lower port, the lower port allowing for the entry of reactant gasses into the reaction chamber, the upper port allowing for the exit of gasses from the reaction chamber. A diffuser plate is attached to the lower port of the reaction chamber and serves to shape the flow of gas into the reaction chamber. The reaction cell further comprises means for introducing gasses into the reaction chamber and a heating means capable of heating the contents of the reaction chamber.
The present invention also relates to a method for converting uranium metal to uranium oxide in the reaction cell of the present invention.
The invention is useful for down-blending highly enriched uranium metal by the simultaneous conversion of highly enriched uranium metal and natural or depleted uranium metal to uranium oxide within the reaction cell.

REFERENCES:
patent: 3698697 (1972-10-01), Gillies et al.
patent: 4090976 (1978-05-01), DeHollander et al.
patent: 4439402 (1984-03-01), Tarutani et al.
patent: 4764228 (1988-08-01), Silver
patent: 4830841 (1989-05-01), Urea
patent: 5009817 (1991-04-01), Hodgson
patent: 5045289 (1991-09-01), Fernando et al.

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