As we all know, the electric melt high corundum brick is the main furnace building material of the current glass industry kiln, which has the characteristics of high temperature resistance and erosion resistance.With the development of glass industry furnace to large-scale and full thermal insulation type, higher requirements are put forward for electrofused zirconium and corundum brick.In the past 30 years, the production of electric melting high corundum brick in China has developed to a certain extent, and the national annual output has reached more than 20,000 tons, basically meeting the demand of the domestic market. In recent years, the application of new oxidation process has played a great role in improving the production level of electromelt refractory materials in China The performance of the electrofused zirconium corundum brick depends on the quality of the raw materials and the production process, especially the quality of the main raw materials, which directly affects the performance of the products.Table 1 is the origin and index of alumina, the main raw material for producing electromelt refractory materials in China. The production of models When producing electric molten high corundum bricks, pour the melted liquid into the pre-made mold.The quality of the mold is greatly related to the quality of the products. In order to ensure the quality of the products, the mold is required to have good air permeability, impact resistance strength, thermal and mechanical properties, and accurate size and smooth surface. Mds are generally made of silica sand with binder water glass.The requirement for silicon sand is that sio2 content is greater than 98%, and if sio2 content is low, it will affect its heat resistance.The specific gravity of water glass is 1.34 g/cm3. After it is mixed evenly with the silicon sand, the sand type begins, and then loaded on the kiln car and pushed into the drying kiln for drying.To prevent deformation, the sand-type tray plates are required to have sufficient strength. Cutting processing Electrofused zirconium corundum brick is pouring product, its surface is rough, shape size tolerance is larger.In the actual use, in order to narrow the masonry brick seam, diamond cutting tools can be used for machining.