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2 154 121

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Application

98112973/02, 1998-06-30

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Start date

1998-06-30

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Actual filing date

1998-06-30

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Published

2000-08-10

(72)

Inventor

Larin V.K.Litvinenko V.G.Sheludchenko V.G.Smirnov I.P.Kolov G.N.

(73)

Holder

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

METHOD OF BREAKING-DOWN URANIUM ORES Russian patent published in 2000 - IPC

Abstract RU 2154121 C2

FIELD: hydrometallurgical processing of uranium raw material. SUBSTANCE: uranium ore is subjected to crushing and wet grinding, thus obtaining pulp which is divided in two flows: one flow is equal to 35-75% of mass of raw material to be processed; this flow is subjected to acid treatment at pH equal to 2.0-4.2 for leaching iron; then flows are combined and iron extracted into solution is oxidized by oxygen; then acid and additional oxidants Mn(IY) and/or Fe(III) are introduced in combined pulp for making uranium pass into solution maintaining pH of leached pulp between 1.5 and 2.5. EFFECT: reduced cost of uranium recovery due to reduced expenses for reagents. 2 cl, 1 dwg, 3 tbl, 1 ex

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RU 2 154 121 C2

Authors

Larin V.K.

Litvinenko V.G.

Sheludchenko V.G.

Smirnov I.P.

Kolov G.N.

Dates

2000-08-10—Published

1998-06-30—Filed

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