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2 080 293

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C1

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IPC

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Application

94008951/25, 1994-03-15

(22)

Actual filing date

1994-03-15

(45)

Published

1997-05-27

(72)

Inventor

Korjabkina N.A.Shkrabina R.A.Ismagilov Z.R.Krasil'Nikova V.A.

(73)

Holder

Institut Kataliza Im.G.K.Boreskova So Ran

METHOD OF PREPARING SPHERICAL ACTIVE ALUMINIUM OXIDE Russian patent published in 1997 - IPC

Abstract RU 2080293 C1

FIELD: aluminium oxide production. SUBSTANCE: amorphous aluminium hydroxide is ground to particle size 10-50 mcm, washed, and plasticized by treatment with acid taken in amount 0.12 mol per 1 mol of aluminium oxide. Plasticized mass is shaped using liquid method. Resultant wet grains are impregnated with magnesium nitrate solution with density 1.045-1.050 g/cu.cm for 5-15 min and subjected to three-step drying and then calcined. EFFECT: improved procedure. 2 tbl

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RU 2 080 293 C1

Authors

Korjabkina N.A.

Shkrabina R.A.

Ismagilov Z.R.

Krasil'Nikova V.A.

Dates

1997-05-27—Published

1994-03-15—Filed

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