Silica brick is made of quartz stone material, the content of SiO2 is above 93%,it has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C.Application For Silica Brick:
Mainly used in the construction of regenerative chamber, chute, combustion chamber, coking chamber, furnace roof etc. parts of the coke ovens.Also be 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. Also used in hot blast stove of high temperature bearing parts and acid open hearth furnace roof.
| Item | Coke Oven Silica Brick | Glass Furnace Silica Brick | Hot Blast Stove Silica Brick | |
| GT-94 | GT-95 | GT-96 | GT-95 | |
| SiO2 % | 94.5 | ≥95 | ≥96 | 95 |
| Fe2O3 % | 1.5 | ≤1.0 | ≤1.0 | 1.3 |
| CaO % | 2.5 | 2.2 | 2.2 | |
| Refractoriness °C | 1710 | 1710 | 1710 | 1710 |
| Refractoriness under load T1,°C | 1650 | 1650 | 1660 | 1650 |
| Apparent porosity % | 22(24) | 22(24) | 22(24) | 22(24) |
| Cold crushing strength Mpa | 40(35) | 35(30) | 35(30) | 35(30) |
| True Density g/cm3 | 2.33 | 2.32 | 2.33 | 2.34 |
| Thermal Expansion % | 1000°C | 1000°C | 1000°C | 1000°C |
| 1.28(1.30) | ≤1.25 | ≤1.25 | 1.26 | |
| Residual Quartz % | 1 | 1 | 1 | 1 |
