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2 069 178

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C1

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IPC

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Application

93035728/26, 1993-07-07

(22)

Actual filing date

1993-07-07

(45)

Published

1996-11-20

(72)

Inventor

Sizjakov V.M.Kostin I.M.Mil'Berger T.G.Kutsenko V.S.Rovinskij S.V.Tereshenkov V.N.Kuznetsov V.N.

(73)

Holder

Aktsionernoe Obshchestvo Aljuminievyj Zavod Im.S.M.Kirova"

METHOD OF CONTROLLING DEEP DESILICONIZATION OF ALUMINATE SOLUTION Russian patent published in 1996 - IPC

Abstract RU 2069178 C1

FIELD: chemical engineering, alumina production. SUBSTANCE: limewater and desiliconized aluminate solution both cooled to specified temperature are mixed at a specified ratio determined by contents of active calcium oxide in limewater and alumina in aluminate solution. Suspension obtained is mixed with desiliconized aluminate solution in turbulent stream in a specified proportion dependent on measured content of silica and active calcium oxide in limewater and that of silica in desiliconized aluminate solution. Additionally, soda-containing solution is dozed into suspension in order to maintain specified ratio between contents of alumina in suspension and carbonate base in soda-containing solution. EFFECT: increased stability and reliability of process. 2 cl, 1 dwg

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RU 2 069 178 C1

Authors

Sizjakov V.M.

Kostin I.M.

Mil'Berger T.G.

Kutsenko V.S.

Rovinskij S.V.

Tereshenkov V.N.

Kuznetsov V.N.

Dates

1996-11-20—Published

1993-07-07—Filed

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