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Brief introduction of silicon bricks
Silica brick is an acid refractory, which is mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phase. It has good resistance to acid slag corrosion. The load softening temperature is up to 1640~1670 ℃, and the volume is relatively stable for long-term use under high temperature.
Features of silicon bricks
- High temperature resistance.
- Resistance to chemical attack.
- Thermal stability.
- Anti dross.
Parameters of silicon bricks
| Item | Vault and furnace wall tiles | checker bricks |
| SiO2 % ≥ | 95 | 95 |
| Al2O3 % ≤ | 1.0 | 1.0 |
| Fe2O3 % ≤ | 1.2 | 1.2 |
| Apparent porosity % ≤ | 22 | 24 |
| Normal temperature compressive strength MPa ≥ | 40 | 30 |
| 0.2MPa Load softening temperature℃ ≥ | 1650 | 1650 |
| True Density g/cm3 ≥ | 2.33 | 2.34 |
| 0.2MPCreep rate % 1550℃ 0-50h ≤ | 0.8 | 0.8 |
| Coefficient of thermal expansion 1000℃ % ≤ | 1.26 | 1.26 |
Application of Silica bricks
Silica bricks are widely used in glass furnaces, coke ovens, hot blast furnaces and other high-temperature thermal equipment. In particular, high-temperature thermal equipment can be repaired arbitrarily without ceasing fire.