Cordierite-Mullite Refractories

摘要

This study aims to prepare cordierite-mullite composites to be used as refractories, mainly setters. The cordierite-mullite percentage was kept constant (70:30%). Mullite and cordierite were added in different proportions either as grog or raw materials, fulfilling the above stoichiometric composition. To attain the required percent of mullite in the product, a superstoichiometric amount of alumina was added as grog or bauxite. Superstoichiometric addition improved both physical and mechanical properties without affecting the thermal shock resistance. The effect of added grog percentage on the body properties is discussed. Best mechanical, thermal and physical properties are achieved with bodies containing 50-70% grog.