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2 219 131

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IPC

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Application

2002104668/15, 2002-02-20

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Start date

2002-02-20

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Actual filing date

2002-02-20

(45)

Published

2003-12-20

(72)

Inventor

Varfolomeev L.I.Denisevich A.V.Kasterov S.D.Kostromitin V.K.Lavelin A.A.Mokryj A.Z.Rabinovich R.L.Turnaev M.I.

(73)

Holder

Fgup Ehlektroliznyj Khimicheskij Kombinat"

METHOD FOR URANIUM EXTRACTION FROM SOLID WASTE OF SUBLIMATE PRODUCTION Russian patent published in 2003 - IPC

Abstract RU 2219131 C2

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention relates to the improved method of hydrometallurgy processing solid uranium-containing waste of sublimate production. Waste is treated with concentrated sulfuric acid followed by addition of water and hydrogen peroxide. Mixture is subjected for depulping at temperature 78-85 C. Uranium is extracted from the formed solution, ammonium uranyl tricarbonate is precipitated and calcined to uranium oxide. Invention provides stabilization of indices and enhancement of safety of uranium leaching process from waste of sublimate production in hydrometallurgy processing, reduced uranium content in insoluble residue and enhanced output. EFFECT: improved extraction method. 5 cl, 2 tbl

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RU 2 219 131 C2

Authors

Varfolomeev L.I.

Denisevich A.V.

Kasterov S.D.

Kostromitin V.K.

Lavelin A.A.

Mokryj A.Z.

Rabinovich R.L.

Turnaev M.I.

Dates

2003-12-20—Published

2002-02-20—Filed