METHOD OF PROCESSING HIGHLY ENRICHED URANIUM Russian patent published in 1999 - IPC

Abstract RU 2131476 C1

FIELD: technology of processing highly enriched armament uranium into low-enriched uranium used as power producing fuel. SUBSTANCE: method includes electrochemical dissolving of highly enriched uranium in 2-5 mol/l solution of nitric acid at temperature not above 50 C and initial anode current density of 0.2-1.5 A/sq.cm. Electrochemical dissolving, after dissolving of 85-90 wt.% of uranium is carried out in presence of hydrazine with its concentration in solution of 4-8 g/l. Produced solution is directed for extraction refining with subsequent processing of reextract up to uranium oxides. EFFECT: reduced cycle of processing of armament highly enriched uranium, higher quality and stability of extraction refining with obtaining of uranium of required purity with respect to plutonium. 1 cl

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RU 2 131 476 C1

Authors

Bashlachev V.N.

Demenko A.A.

Zhitkov S.A.

Stikhin V.F.

Terent'Ev G.A.

Shadrin G.G.

Dates

1999-06-10—Published

1998-03-19—Filed