High pore volume alumina powders

B - Operations – Transporting – 01 – J

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B01J 2/02 (2006.01) B01J 20/08 (2006.01) C01F 7/02 (2006.01) C01F 7/44 (2006.01)

Patent

CA 1109642

HIGH PORE VOLUME ALUMINA POWDERS Abstract of the Disclosure A method for the production of alumina powder having high pore volume, comprising drying an alumina slurry by a) heating said slurry to a temperature above 190°F b) a pressure of up to the critical point of water then, c) introducing said slurry to a drying chamber through an orifice sufficiently small to create a backpressure in excess of slurry vapor pressure. and up to the critical point of water.

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