Production And Application Of Silicon Nitride Bonded Silicon Carbide Brick

Silicon nitride bonded silicon carbide brick is a kind of high-grade refractory brick,With silicon carbide as aggregate,Silicon nitride as binding phase,add metal silicon powder,It is made by reaction sintering in nitrogen atmosphere kiln.In the firing process of the product, Si3N4 combination can effectively combine SiC particles together to form a spatial network structure, which makes the product have incomparable characteristics of other refractory bricks. Silicon nitride bonded silicon carbide brick not only has the characteristics of high density, high strength, good thermal shock stability and good thermal conductivity, but also has excellent corrosion resistance and oxidation resistance of cryolite, aluminum fluoride and fluoride. Therefore, the products can be used in sanitary ceramics, electric ceramics, aluminum smelting, steel making, iron smelting and other industries.