Non-fired silicon carbide refractories
AssigneesNippon Steel Corporation, Harima Refractory Co., Ltd.
InventorsShigeru Fujiwara, Masayosi Nagahara, Satoshi Nagai, Toshihiro Isobe
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Abstract
A non-fired silicon-carbide base refractory mixture comprising 95 to 99.5% (in respect to the mixture) of silicon carbide containing 1.5 to 8% (in respect to the silicon carbide) of particles not larger than 1.mu. and 0.5 to 5% of super-fine silica powder containing at least 50% of particles not larger than 1.mu. after a coagulation.
Claims4
A non-fired silicon-carbide base refractory mixture consisting essentially of 95 to 99.5% (in respect to the mixture) of silicon carbide containing 1.5 to 8% (in respect to the silicon carbide) of particles not larger than 1.mu. and 0.5 to 5% of super-fine silica powder containing at least 50% of particles not larger than 1.mu. after a coagulation.
A non-fired silicon-carbide base refractory mixture consisting essentially of 95 to 99.5% (in respect to the mixture) of silicon carbide containing 1.5 to 8% (in respect to the silicon carbide) of particles not larger than 1.mu. and 0.5 to 5% of super-fine silica powder containing at least 50% of particles not larger than 1.mu. after a coagulation, said mixture also including 0.5 to 4% of metallic silicon and 0.3 to 4% of thermoplastic resin powder containing a thermal curing agent, both percentage being per 100% of the mixture.
Dependencies are inferred from the claim text.