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2 057 197

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C1

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IPC

(21) (22)

Application

93058170/02, 1993-12-28

(22)

Actual filing date

1993-12-28

(45)

Published

1996-03-27

(72)

Inventor

Grejver T.N.Zajtseva I.G.Popkov E.V.Andreev Ju.V.

(73)

Holder

Aktsionernoe Obshchestvo Redkikh Metallov"

METHOD FOR OBTAINING RHENIC SULFIDE CONCENTRATE FROM COMPOUND SULFURIC ACID SOLUTIONS Russian patent published in 1996 - IPC

Abstract RU 2057197 C1

FIELD: obtaining of rhenic sulfide concentrate. SUBSTANCE: method involves depositing rhenium together with osmium, with sulfuric acid concentration being maintained within 15-30%, solution temperature being 80-107 C and consumption of sodium thiosulfate 5-15 g/dm3. EFFECT: increased efficiency and improved quality of concentrate. 1 tbl

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RU 2 057 197 C1

Authors

Grejver T.N.

Zajtseva I.G.

Popkov E.V.

Andreev Ju.V.

Dates

1996-03-27—Published

1993-12-28—Filed

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