Nowadays, human beings use a lot of resources, and excessive energy waste increases the load on the earth. In response to energy conservation and environmental protection, the research and development of lightweight thermal insulation materials has been put on the agenda. Corundum mullite brick is one of the ideal thermal insulation refractories at home and abroad. It has good chemical stability, high temperature resistance, high dimensional accuracy, uniform structure, beautiful appearance and low thermal conductivity. Now it is widely used in hot blast furnace, glass crucible, metal melting furnace, ceramic tunnel kiln, roller kiln, electric porcelain shuttle kiln, etc., and has broad market prospects.

　　There are three methods for producing corundum mullite bricks at home and abroad: foam method, additive burning method and gasification method. The production of corundum mullite bricks by the foam method is to mix the foaming agent, stabilizer and water in a certain proportion, first make a foam liquid, and then mix it with the slurry through the processes of casting, curing, drying, baking and firing. , made of corundum mullite bricks with high porosity. Although it can produce high-quality corundum mullite bricks, it has many procedures, complex procedures, long production cycle, low production efficiency and high cost. The production of corundum mullite bricks by the additive burning method is to add some combustible additives, such as sawdust, polystyrene, coke, etc. . This kind of brick with high porosity and low density becomes corundum mullite brick. The method has the advantages of simple production process, short production cycle, low cost and high production efficiency. The production of corundum mullite bricks by gasification method refers to the introduction of substances that can play a chemical role in the ingredients to generate gas, and the use of chemical methods to obtain air bubbles, thereby producing bricks with high porosity and low density. Compared with the foam method, the production process of this method is simpler, the production cycle is longer, and the cost is higher, so it is rarely used in actual production. According to the actual situation of the special refractory material factory, the corundum mullite brick is produced by the additive burning method.