| 摘要 |
A low thermal conductivity, high strength refractory castable composition with high abrasion resistance consisting essentially of about 55 to 80% by weight amorphous silica, about 5 to 25% by weight of a calcined alumino-silicate aggregate having a density of about 30 to 70 pcf and a particle size of about -10 to +65 mesh, about 5 to 40% by weight of calcined fireclay fines, about 1 to 10% by weight of a flow aid for particle packing, and about 5 to 25% by weight of a calcium aluminate cement.
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