Effect of Microstructure on the Properties of Synthetic Refractory Aggregates

Four types of refractory aggregateʹs (three wintered mullites using different starting materials and one tabular alumina) were synthesixed by reaction sintering process and their properties evaluated. The microstructures of the aggregates have been studied by Scanning Electron Microscopy and correlated with the properties of the corresponding aggregates. The performance of these aggregates was also studied at high temperatures by using it in castables.