METHOD OF PREPARING ALUMINIUM HYDROXIDE POWDER Russian patent published in 2001 - IPC

Abstract RU 2167818 C1

FIELD: preparation of catalysts, adsorbents and components thereof based on aluminium hydroxide. SUBSTANCE: method comprises heat treatment of gibbsite and spray drying. Heat treatment is carried out in current of air at temperatures from 350 to 550 C. After heat treatment of gibbsite is over, the resulting product is washed to remove sodium followed by plasticization of suspension having heat-treated solid produce content of 8-15% at pH of 1-4 and temperature rise of suspension in plasticization stage from 130 to 200 C at temperature rise rate of 10-25 c/h for 6-15 h, pH value of suspension directed to be spay dried varies within 4-10. Invention allow one to improve quality of the product. EFFECT: more efficient preparation method. 1 tbl

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RU 2 167 818 C1

Authors

Irisova K.N.

Smirnov V.K.

Baklanov V.B.

Bodryj A.B.

Talisman E.L.

Chvanova E.S.

Dates

2001-05-27Published

1999-11-03Filed