Refractory bricks, castable refractory, and other refractory materials are used in the non-ferrous industry to provide a high level of heat insulation and protection. Refractory bricks are a type of ceramic material made from clay, alumina, and silica that is extremely heat resistant. Castable refractory is a pre-mixed material that can be poured or sprayed into a form or mold to create shapes and linings. Other forms of refractory materials include ceramic fiber blankets, monolithic refractory, and specialized insulation materials.