Features: 1. Good acid and slag resistance. 2. Good thermal conductivity. 3. High tridymite content. 4. Accurate dimension and good appearance. Application: Mainly used for coke oven of coking chamber and combustion chamber partition, steel open hearth of regenerative chamber and sediment chamber, soaking furnace, glass melting furnace, refractory silica brick materials and ceramic firing kiln and kiln of the vault and other supporting parts. Used in the construction of regenerative chamber, chute, combustion chamber, coking chamber, furnace roof etc. parts of the coke ovens. Also used in hot blast stove of high temperature bearing parts and the roof of acid open hearth furnace. Technical Index: Item Silica Brick for Coke Oven Sole, Walls Other Positions SiO2 % 94.5 94.5 A12O3 % 1.0 1.0 Fe2O3 % 1.0 1.0 CaO % 2.5 2.5 Apparent Porosity % 22 24 True Density g/cm3 2.32-2.33 2.32-2.34 Cold Crushing Strength MPa 40 35 Refractoriness Under Load (0.2MPa) 1650-1660 Residual Quartz % 0-1 Permanent Linear Change (1450 *2h) % 0-0.2 0-0.2 Thermal Expansion Rate 1000 % 1.28 1.30 Refractoriness 1710