METHOD OF CHEMICAL SEPARATION OF URANIUM ISOTOPES Russian patent published in 1998 - IPC

Abstract RU 2120329 C1

FIELD: nuclear- power engineering. SUBSTANCE: invention is appropriate for correcting isotope composition of nuclear fuel. Solution containing [HNO₃] 115.5 g/l of U(VI), [N₂H₄] 2.0 mol/l of nitric acid, and 0.5 g/l of hydrazine is poured into chromatographic column with Teflon powder and extractant applied on its surface. Uranium(IV) band is formed. Countercurrent extraction process provides coefficient of separation other than one. Uranium reflux is effected with no change in valence state by exhaustive extraction technique and by reextraction from the ends of band. EFFECT: increased extent of U²³⁸ and U²³² separation and decreased number of reagents. 2 dwg, 4 tbl, 3 ex

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RU 2 120 329 C1

Authors

Zhiganov A.N.

Kondakov V.M.

Korotkevich V.M.

Rjabov A.S.

Semenov E.N.

Kruglov S.N.

Dates

1998-10-20—Published

1997-01-09—Filed