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2 235 066

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IPC

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Application

2002108112/02, 2002-03-29

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Start date

2002-03-29

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Actual filing date

2002-03-29

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Published

2004-08-27

(72)

Inventor

Rychkov V.N.Smirnov A.L.Lebedinskij Ju.M.Gusev A.A.Cheremnykh G.S.Shtutsa M.G.Rodchenkov N.V.Solov'Ev V.V.Seredenko V.A.

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Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Ural'Skij Ehlektrokhimicheskij KombinatOao Mekhanicheskij Zavod"

URANIUM HEXAFLUORIDE PREPARATION METHOD Russian patent published in 2004 - IPC

Abstract RU 2235066 C1

FIELD: uranium hydrometallurgy.

SUBSTANCE: invention relates to recovering uranium hexafluoride from various-composition solutions involving extraction, reextraction, and heat treatment techniques. Extraction of uranium is carried out with organic compounds or mixtures thereof followed by solid-phase reextraction with 2.0-2.5 M ammonium fluoride solution without preliminary rinsing of extractant. Calcination of ammonium uranyl pentafluoride obtained as solid reextraction product is effected at 400-450^оС. The latter product is then fluorinated with gaseous fluorine at 250-270^оС.

EFFECT: simplified process and reduced expenses.

4 cl, 4 tbl, 3 ex

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RU 2 235 066 C1

Authors

Rychkov V.N.

Smirnov A.L.

Lebedinskij Ju.M.

Gusev A.A.

Cheremnykh G.S.

Shtutsa M.G.

Rodchenkov N.V.

Solov'Ev V.V.

Seredenko V.A.

Dates

2004-08-27—Published

2002-03-29—Filed