Foamed ceramic body and process for production thereof

Details Foamed ceramic body and process for production thereof Foamed ceramic body and process for production thereof

C - Chemistry, Metallurgy

04

B

261/2

C04B 38/02 (2006.01) C04B 38/06 (2006.01)

Patent

CA 1243049

Abstract of the Disclosure A foamed ceramic body comprising at least 90 % by weight of a ceramic composed of 60 to 80 % by weight of SiO2, 5 to 15 % by weight of Al2O3, 8 to 14 % by weight of an alkali metal oxide, and 1 to 10 % by weight of CaO; and a process for producing the said foamed ceramic body, which comprises mixing 100 parts by weight of a powdery mixture composed of 75 to 90 % by weight of a volcanic eruption, 5 to 15 % by weight of an alkali metal oxide compound and 2 to 10 % by weight of a CaO compound uni- formly with 0.1 to 1 part by weight of a blowing agent, and heating the mixture to a temperarture of 800 to 1100°C.

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