FIELD: chemical engineering. SUBSTANCE: aluminium hydroxide containing not more than 30% x- alumina and/or amorphous aluminium hydroxide and up to 10% gibbsite is ground until particles with size less than 20 mcm are obtained in quantity more than 70%. Ground product is mixed with water nitric acid and plastified. Plastified product is shaped in series in kerosene layer and ammonia aqueous solution. Grains thus obtained are dried and calcined. EFFECT: improved procedure. 3 cl, 1 tbl
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