Method of manufacturing porous ceramic products by reacting flue

Details Method of manufacturing porous ceramic products by reacting flue Method of manufacturing porous ceramic products by reacting flue

1976-11-11

1978-01-31

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 40V, 106 41, 106 68, 106 71, 106 736, 106288B, 106DIG1, 264 43, 264 44, C04B 2100

Patent

active

040713695

ABSTRACT:
A method for manufacturing porous ceramic products by mixing ceramic material with a fly dust containing silica and metal oxides and having a large specific surface area of at least 20 m.sup.2 /g. The mixture is heated to at least 800.degree. C to convert it into a porous ceramic material. The process is carried out so as to result in either products having mainly closed pores by heating at sintering temperatures or products having mainly open pores by heating at consolidation temperatures. The admixture may be wrapped in a sheet of material which upon heating the admixture to form pores in the material encloses the gases formed at low temperatures but which ruptures at high temperatures to expose the clay to an oxidizing atmosphere.

REFERENCES:
patent: 2699409 (1955-01-01), Hashimoto
patent: 2833659 (1958-05-01), Bauer
patent: 2839415 (1958-06-01), Gemeiner
patent: 2970060 (1961-01-01), Burnett
Dziob et al., "Utility of Z. Clay, Electrofilter Dusts From Turow Power Plant and Kaolin Residues as Raw Materials for Production of Wall Tiles" (Zeszyty, Nauk. Akad.) Ceramika, 1971, No. 17, pp. 97-104 (Polish), Mar. 1971.
Bureau of Mines Info. Circ. No. 8483, "Fly Ash Utilization" (1970), p. 14, pp. 53-55.

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