METHOD FOR PRODUCING ACTIVATED ALUMINA Russian patent published in 1997 - IPC

Abstract RU 2097328 C1

FIELD: non-ferrous metallurgy; production of granular activated alumina usable as sorbent, carrier, catalyst. SUBSTANCE: technical-grade aluminium hydroxide is subjected to sequential process operations of plasticizing, shaping granules, drying and heat treatment of granules. Inventive novelty of proposed method resides in fact that plasticizing operation is carried out in two steps, viz.: in first step nitric acid and water are added to technical-grade aluminium hydroxide to adjust its acid number at 0.1-0.9, followed by stirring for at most 1 h. In second step binder is added in amount 10-40 wt. %, followed by stirring for at most 1 h. EFFECT: new simple and cheap method for production of high-value granular activated alumina which is in high demand. 8 cl, 1 tbl

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RU 2 097 328 C1

Authors

Kropachev Vladimir Borisovich

Smirnova Margarita Aleksandrovna

Racheva Margarita Aleksandrovna

Kladova Natal'Ja Vladimirovna

Jastrebova Galina Mikhajlovna

Dates

1997-11-27Published

1996-01-05Filed