Silicon carbide bricks are kind of very important refractory building materials for various furnaces and kilns in high temperature and high strength erosion atmosphere. Silicon carbide refractory brick has much excellent performance on resisting very bad environment erosion, such as high heat conductivity, good abrasive resistance, great thermal shock resistance, strong resistant to acid and alkali slag erosion and low heat expansion coefficient. Refractory silicon carbide castable mainly used for different parts of cement kiln and the roof of electric arc furnace and steel ladel.
Silicon carbide brick is made of the raw material black SiC. The main crystal phase is SiC. Refractory silicon carbide brick is formed by matching the binding agent, mixing, molding and firing process. The moth hardness of silicon carbide brick is 9, thus, Silicon insulation carbide brick has the strong acid slag resistance.
The raw materials of the silicon carbide bricks are silicon carbide, about 72%-99%. Silicon carbide is also called the moissanite, corundum sand or refractory sand. Silicon carbide refractory brick is made by quartz sand, petroleum coke or coal tar, and wood bits, being produced by high temperature smelting in the electric resistance furnace.
Silicon carbide refractory brick can be classified into clay bonded silicon carbide bricks, Si3N4 bonded silicon carbide bricks, Sialon bonded silicon carbide bricks, β-SiC bonded silicon carbide bricks, Si2ON2 bonded silicon carbide bricks and recrystal silicon carbide bricks.
|Quality||RS SICAST 85||RS SICAST 80||RS SICAST 60|
|Physical Properties||Required quantity (t/m3)||2.68||2.6||2.5|
|Water Required for Casting (%)||6 – 7||6 – 7||7 – 8|
|CCS (kg/cm2)||@ 110℃x24h||650(140)||500(90)||450(70)|
|PLC (%)||@ 110℃x24h||-0.06||-0.06||-0.06|
|TC (kcal/mh℃)||@ 350℃||11.5||11||8|
|Chemical Properties (%)||Al2O3||9||9||20|
|SiC + C||83||78||58|
|Main Applications||Nonferrous Metal Furnace, Incinerator, Cement Furnace & other Industrial Furnace|
Refractory silicon carbide castable is mainly used for different parts of cement kiln and the roof of electric arc furnace and steel ladel. And also can be used in the following places.
RS refractory factory as a professional silicon carbide castable manufacturer in china, have many competitive advantages in the market. if you have demand of refractory silicon carbide castable, or have some questions on silicon carbide refractory castable about physical and chemical indicators, please contact us for free, we will provide you with high quality silicon carbide castables.