Cordierite, alumina, silica porous ceramic bodies coated with an

Details Cordierite, alumina, silica porous ceramic bodies coated with an Cordierite, alumina, silica porous ceramic bodies coated with an

1979-10-22

1981-03-24

Vertiz, O. R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

106 40R, 106 41, 106 62, 75 68R, 75 93R, 210506, 210510, 210773, 252455R, B32B 518, B32B 326

Patent

active

042580994

ABSTRACT:
A ceramic porous body useful as a filtering material for molten metal is disclosed. The ceramic porous body, consisting essentially of cordierite, alumina and silica, is formed by covering surfaces of cell strands of a ceramic porous body skeleton having a bulk specific gravity of 0.25-0.55 with 3-40% by weight per the weight of the skeleton of an activated alumina layer and has an average diameter of interconnected voids of 0.3-5.0 mm, a pressure loss of 0.3-30.0 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: 3893917 (1975-07-01), Pryor et al.
patent: 3897221 (1975-07-01), Salyer et al.
patent: 3947363 (1976-03-01), Pryor et al.
patent: 3950175 (1976-04-01), Lachman et al.
patent: 4001028 (1977-01-01), Frost et al.
patent: 4004933 (1977-01-01), Ravault

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