Abstract
An alumina-silicon carbide-carbon-based trough castable is studied with silica sol and calcium aluminate cement-bonding. The castable compositions were prepared by continuous particle size distribution coefficient of 0.21 and processed by conventional processing techniques with heat treatments at 110, 900 and 1500°C. The changes in physical and mechanical properties like bulk density and cold crushing strength with varying amounts of SiC and C were studied. The phase analysis and microstructural developments at high-temperature are also characterised. Cement-bonding showed better dried strength and sol bonding showed no degradation in strength with increasing temperature. Mullite was observed in the fired samples with hibonite and anorthite phases in cement-containing compositions.
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