FIELD: chemistry.
SUBSTANCE: invention relates to field of chemistry. By-product of production of chlorine-containing salts in form of unreacted sediment during dissolution of oxygen-containing aluminium compound with composition Al2O3nH2O, where n=0.5-2.9 in hydrochloric acid at higher temperature, is washed and dried. After that it is subjected to plasticisation with addition of nitric acid and water to acidic module 0.025-0.05, formation, drying and thermal processing. Thermal processing is carried out at temperature 400-1300°C.
EFFECT: invention makes it possible to obtain active aluminium oxide with improved properties, improve ecology due to application of wastes of production of aluminium chlorine-containing salts.
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