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2 255 144

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IPC

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Application

2003110950/02, 2003-04-16

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Start date

2003-04-16

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Actual filing date

2003-04-16

(45)

Published

2005-06-27

(72)

Inventor

Tkachenko Ju.A.Dorofeev V.V.Ajushin B.I.Ragozin L.V.Efimov A.A.Konnova N.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij, Konstruktorskij I Proektnyj Institut Aljuminievoj I Ehlektrodnoj Promyshlennosti"

METHOD FOR STARTING ALUMINUM CELL Russian patent published in 2005 - IPC

Abstract RU 2255144 C2

FIELD: starting aluminum cell after major repairs or after mounting new cell.

SUBSTANCE: method comprises steps of charging part of raw material along periphery of cathode device; firing hearth; pouring liquid electrolyte; electrically connecting cell and feeding to bath solid sodium salts in the form of mixture of flotation and regeneration cryolite taken in quantity 70 -95 mass% of total mass of solid raw material. In order to increase useful life period of cathode device and the whole cell, lithium-containing component is fed together with mixture of flotation and regeneration cryolite in quantity consisting 2.5 - 5.0 mass % (on conversion to lithium fluoride) of total quantity of mixture. Lithium-containing sodium cryolite and(or) lithium cryolite is used as lithium containing component.

EFFECT: increased useful life period of cathode device and the whole cell.

2 cl, 1 ex

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RU 2 255 144 C2

Authors

Tkachenko Ju.A.

Dorofeev V.V.

Ajushin B.I.

Ragozin L.V.

Efimov A.A.

Konnova N.A.

Dates

2005-06-27—Published

2003-04-16—Filed