High Strength Anti-crushing Castable

Silicon carbide anti-scaling castable, based on the unique properties of silicon carbide, high-temperature volume stability is very good, so the refractory material produced with sic as raw material has good wear resistance and corrosion resistance, high high-temperature strength, high thermal conductivity, small linear expansion coefficient, good thermal shock resistance, does not react with cement raw material, and has good anti-scaling. The adhesion with cement raw material is very small, and cement raw material is generally difficult to adhere to the surface of silicon carbide castable, which greatly reduces the agglomeration of cement raw material in the kiln tail discharge slope and other parts. Under high temperature conditions, the surface of the material forms a glaze to prevent the penetration of the glass phase in the cement raw material, thereby playing an anti-scaling role. The technical concept is developed.
Silicon carbide anti-scaling castable is mainly made of silicon carbide as the main raw material, with the addition of high-efficiency water reducing agent and ultrafine powder, and pure calcium aluminate cement as a binder, which can greatly reduce the number of crusting. It is composed of silicon carbide particles and powder, special coke gemstones, α-alumina powder, silicon powder, pure calcium aluminate cement plus silicate water reducing agent, and water. The castable has high strength, refractoriness and wear resistance, and is suitable for the construction of large and medium-sized new dry-process cement kilns and various high-temperature kilns. It has the characteristics of anti-scaling, good density, high strength, good wear resistance, high thermal shock resistance, small linear change, no surface cracking, anti-flaking, and long service life in the kiln tail of large dry-process kilns, preheater upper preheater unloading slope, ascending flue, decomposition furnace cone and other easy-to-scaling parts.