... temperature shrinkage properti high quality Sand shape of alumina Properties:White powder or fine,Granularity, easy to disperse, ... 1) Refractory brick. Fireclay brick, High alumina brick, Silica brick, Mullite brick, Magnesia brick, Corundum Various insulating ... Castable series. Low cement castable, High alumina castable, Silica castable, Corundum castable, Light weight insulation castable, High ...