Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1987-10-22
1989-01-10
Stoll, Robert L.
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
502355, 502415, 502439, 23313FB, C01F 702
Patent
active
047972718
ABSTRACT:
The process of the present invention for preparing granules of alumina includes pretreating an alumina powder by admixing with cold water in a mixer at a temperature below room temperature, e.g., such as below about 20.degree. C., to form a pretreated alumina having a pore volume saturated with water and further having a surface area of gel structure, and agglomerating the pretreated alumina in a fluidized bed to form granules. The process is particularly suited to producing activated alumina in macroporous granules. The process in one aspect further includes a cold hopper for cooling alumina powder prior to the pretreating step.
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"Fluidized-Bed Spray Granulation" by Sten Mortensen and Svend Hovmand, CEP, Apr. 3, 1983, pp. 37-42.
Chou Chin-Liang
Edd Jon F.
Fleming Hubert L.
Huang Ching-Chung
Kono Hisashi O.
Aluminum Company of America
Glantz Douglas G.
Harvey Paige C.
Stoll Robert L.
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