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2 154 120

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Application

99112328/02, 1999-06-07

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Start date

1999-06-07

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Actual filing date

1999-06-07

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Published

2000-08-10

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Inventor

Kazanbaev L.A.Kozlov P.A.Marchenko A.K.Girshengorn A.P.Kolesnikov A.V.

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Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Ehlektrolitnyj Tsinkovyj Zavod"

METHOD OF CONCENTRATION OF INDIUM FROM SULFATE ZINC SOLUTIONS Russian patent published in 2000 - IPC

Abstract RU 2154120 C1

FIELD: metallurgy of nonferrous metals. SUBSTANCE: invention relates to extraction of indium from sulfate zinc solutions where copper content is up to 10 g/l. Method involves successive carrying out stages of reduction of trivalent iron in solutions, extraction of indium into organic phase and its reextraction. Method is performed by reduction of iron with iron powder at 40-55 C and in the presence of sulfuric acid (concentration is 26-35 g/l). EFFECT: enhanced effectiveness of iron reduction in solutions, increased indium extraction. 1 tbl

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RU 2 154 120 C1

Authors

Kazanbaev L.A.

Kozlov P.A.

Marchenko A.K.

Girshengorn A.P.

Kolesnikov A.V.

Dates

2000-08-10—Published

1999-06-07—Filed

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