Synthesis and characterization of forsterite refractory by doping with kaolin

Abstract

The present study investigates the synthesis of forsterite by adding kaolin to improve properties of refractory. Forsterite was synthesized by solid-solid reaction of MgO and SiO2 and kaolin added as additive and sintered Up to 1450°C for 2hr soaking period. Synthesized forsterite was characterized by physical properties measurements (%Apparent Porosity, Bulk Density, %Water Absorption, Apparent Specific Gravity, %Weight Loss, %Linear Shrinkage) and XRD analysis was done to the sintered forsterite. Properties (%A.P, B.D, %W.A, T, %W.L, %L.S) were improved by addition of kaolin due to formation of cordierite phase which melts at sintering temperature. 3.0% kaolin was more effective in promoting densification.