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US 2010/0166642 A1Published application
Method for producing alumina
AssigneeSumitomo Chemical Company, Limited
InventorsNoriaki FUJITA, Shinji FUJIWARA
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Abstract
A method for producing alumina comprising the steps of mixing an aqueous medium in an amount of 20 parts by weight or more and 300 parts by weight or less with 100 parts by weight of a first dry powdery aluminum hydroxide prepared by an aluminum alkoxide method to give a wet powdery aluminum hydroxide; drying the wet powdery aluminum hydroxide by an agitation drying system to give a second dry powdery aluminum hydroxide; and calcining the second dry powdery aluminum hydroxide to give alumina having a high bulk density.
Claims4
A method for producing alumina comprising the steps of:
- mixing an aqueous medium in an amount of 20 parts by weight or more and 300 parts by weight or less with 100 parts by weight of a first dry powdery aluminum hydroxide prepared by an aluminum alkoxide method to give a wet powdery aluminum hydroxide;
- drying the wet powdery aluminum hydroxide by an agitation drying system to give a second dry powdery aluminum hydroxide;
- and
- calcining the second dry powdery aluminum hydroxide to give alumina.
1 more element
Dependencies are inferred from the claim text.