Mullite Insulating Firebrick Introduction Light Weight Mullite Insulation Brick can be widely used as lining or insulation layers of various industrial furnaces and kilns in metallurgical industry, machine building industry, ceramic industry, chemical industry. Advantages It has excellent thermal shock resistance, strong resistance to the corrosive gas and slag. Application products containing a large number of closed pores, and a lightweight high temperature, good insulation properties, refiring small contraction, excellent thermal shock resistance, strong resistance to the corrosive gas and slag. Products can greatly improve the thermal efficiency of the kiln to shorten the production cycle, reduce the kiln body weight to achieve energy saving