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2 175 355

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C1

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IPC

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Application

2000111030/02, 2000-05-03

(24)

Start date

2000-05-03

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Actual filing date

2000-05-03

(45)

Published

2001-10-27

(72)

Inventor

Il'Jashevich V.D.Khodjukov B.P.

(73)

Holder

Oao Zavod Tsvetnykh Metallov Im. V.N. Gulidova"

METHOD OF PREPARING AFFINATED OSMIUM Russian patent published in 2001 - IPC

Abstract RU 2175355 C1

FIELD: non-ferrous metallurgy, particularly, affinage production of platinum group metals. SUBSTANCE: explosion-fire hazard of production process is reduced by substituting hydrogen in reducing oxidized osmium powders for mixture of ammonia with inert gas. Reduction is carried out at 1000-1100 C, and cooling is carried out to 20-30 C. EFFECT: more efficient preparation method. 2 ex, 1 tbl

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RU 2 175 355 C1

Authors

Il'Jashevich V.D.

Khodjukov B.P.

Dates

2001-10-27—Published

2000-05-03—Filed

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