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2 044 084

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C1

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IPC

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Application

93029490/02, 1993-06-15

(22)

Actual filing date

1993-06-15

(45)

Published

1995-09-20

(72)

Inventor

Grejver T.N.Kassatsier Eh.L.Vergizova T.V.Khudjakov V.M.Khajdov V.V.Lomonosov V.N.Kulakova A.A.

(73)

Holder

Kombinat Rossijskogo Gosudarstvennogo Kontserna Po Proizvodstvu Tsvetnykh I Dragotsennykh Metallov Nikel'"

OSMIUM-CONTAINING PRODUCTS PROCESSING METHOD Russian patent published in 1995 - IPC

Abstract RU 2044084 C1

FIELD: hydraulic metallurgy. SUBSTANCE: method provides for osmium tetraoxide distilling off from pulp, composed of deluted sulfuric acid and osmium-containing products, using oxidizer, provides oxidizing-reducing potential (ORP) from 1 V to 1.2 V, absorption of osmium tetraoxide by КОН- solution. Potassium osmate settling is exercised by oxidizing-reducing potential decreasing to 0.2 0.25 V with addition of reducer. Sediment is separated by filtration and then mother liquor is fed back for osmium tetraoxide absorption. EFFECT: method allows to simplify and make technological cycle closed-circuit. 7 cl, 2 dwg

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RU 2 044 084 C1

Authors

Grejver T.N.

Kassatsier Eh.L.

Vergizova T.V.

Khudjakov V.M.

Khajdov V.V.

Lomonosov V.N.

Kulakova A.A.

Dates

1995-09-20—Published

1993-06-15—Filed

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