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2 124 581

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Application

97110251/02, 1997-06-17

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Actual filing date

1997-06-17

(45)

Published

1999-01-10

(72)

Inventor

Dorofeev V.V.Ragozin L.V.Borovik V.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Sibirsko-Ural'Skaja Aljuminievaja Kompanija Filial Aljuminievyj Zavod Sibirsko-Ural'Skoj Aljuminievoj Kompanii"

PROCESS OF ALUMINUM MAKING BY ELECTROLYSIS OF MELTED SALTS Russian patent published in 1999 - IPC

Abstract RU 2124581 C1

FIELD: electrolytic making of aluminum. SUBSTANCE: given process of aluminum making by electrolysis of melted salts includes feed of alumina, salts of fluorine and boron carrying addition into electrolyzer. Regeneration cryolite with content of boron up to 5-8 per cent by mass prepared by chemical interaction of boron-carrying compositions with fluorine-aluminate solution at stage of regeneration of cryolite is used as boron carrying addition. Borated regeneration cryolite in this case is fed into electrolyzer in proportion of 0.01-0.015:1 to mass of produced aluminum. EFFECT: reduced consumption of technological electric energy and clearing of crude aluminum from impurities of heavy metals. 1 tbl

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RU 2 124 581 C1

Authors

Dorofeev V.V.

Ragozin L.V.

Borovik V.A.

Dates

1999-01-10—Published

1997-06-17—Filed

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