Ceramic porous bodies

Details Ceramic porous bodies Ceramic porous bodies

1980-10-21

1981-11-24

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428312, 428697, 428699, 428701, B32B 326, B32B 900

Patent

active

043025021

ABSTRACT:
A ceramic porous body useful as a filtering material for molten metal is disclosed. The ceramic porous body is formed by covering surfaces of cell strands of a ceramic porous body skeleton consisting essentially of silica, alumina and magnesia and having a bulk specific gravity of 0.3-0.6 with an activation layer consisting of 3-40% by weight per the weight of the skeleton of an activated alumina and 0.5-10% by weight of a flux for aluminum and has an average diameter of interconnected voids of 0.3-5.0 mm, a pressure loss of 0.3-30 mm as a water-gauge pressure when passing air through the body of 1 cm thick at a rate of 1 m/sec., a microsurface area of not less than 10 m.sup.2 /g and a porosity of 75-95%.

REFERENCES:
patent: 3451841 (1969-06-01), Kesten et al.
patent: 4020234 (1977-04-01), Gardner

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