High pore volume alumina powders

Details High pore volume alumina powders High pore volume alumina powders

1978-12-18

1980-08-19

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264 42, B01J 202

Patent

active

042184134

ABSTRACT:
A method for increasing the pore volume of alumina powder produced by spray drying alumina slurries by heating the slurry to a temperature near the boiling point of water and a pressure up to the critical point of water then introducing the slurry to a spray drying chamber through a small orifice, thereby creating a backpressure in excess of slurry vapor pressure and up to the critical point of water.

REFERENCES:
patent: 3406228 (1968-10-01), Hardy

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