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2 205 885

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IPC

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Application

2000121192/02, 2000-08-07

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Start date

2000-08-07

(22)

Actual filing date

2000-08-07

(45)

Published

2003-06-10

(72)

Inventor

Larin V.K.Litvinenko V.G.Sheludchenko V.G.Kolov G.N.Sharavara N.A.Sazanov N.P.Tupikov D.G.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Proizvodstvennoe Gorno-Khimicheskoe Ob"Edinenie"

METHOD OF EXTRACTION OF URANIUM FROM ORE Russian patent published in 2003 - IPC

Abstract RU 2205885 C2

FIELD: processing of uranium ore raw material. SUBSTANCE: uranium is extracted at crushing and grinding or ore and leaching and sorption of it from pulp followed by desorption and extraction from strippants. Re- extraction is performed at separation of crystals of ammonium uranyl tricarbonate which are subjected to treatment with carbonate ammonium or carbonate-bicarbonate solution followed by filtration, dissolving in water at temperature 70-90 C at volume-to-weight ratio of liquid and solid phases of 6 to 10:1, filtration and settling of secondary crystals ammonium uranyl tricarbonate by carbon ammonium salts at temperature of 20-40 C and their calcination to state uranous-uranic oxide. EFFECT: improved quality of uranous-uranic oxide. 2 cl, 2 tbl

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RU 2 205 885 C2

Authors

Larin V.K.

Litvinenko V.G.

Sheludchenko V.G.

Kolov G.N.

Sharavara N.A.

Sazanov N.P.

Tupikov D.G.

Dates

2003-06-10—Published

2000-08-07—Filed