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Product introduction of silica brick
Silica brick is an acid refractory, which is composed of scaly quartz, square quartz and a small amount of residual quartz and glass phase. These raw materials are mixed, shaped, dried and baked in a furnace at 1400-1430 ℃.
Application of silica brick
Silica bricks are mainly used in the partition wall of carbonization and combustion chamber of coke oven, heat storage chamber and slag chamber of steel blast furnace, even heat furnace, glass melting kiln and ceramic firing kiln, also used in the high temperature bearing part of hot blast furnace and acid blast furnace roof.
Parameters of general silica bricks
| Item | GZ-96 | GZ-95 | GZ-94 |
| SiO2, %, ≥ | 96 | 95 | 94 |
| Fe2O3, %, ≤ | 1.0 | 1.2 | 1.4 |
| Apparent porosity, %, ≤ | 22(24) | ||
| Normal temperature compressive strength, MPa, ≥ | 35(30) | kg/pcs,＜20Kg | |
| 30(25) | kg/pcs, ≥20Kg | ||
| 0.2MPa Load softening temperature, ≥ | 1660 | 1650 | 1640(Colloidal silica1620) |
| True Density, g/cm3, ≤ | 2.34 | 2.35 |
Silicon bricks for glass kilns
Silicon bricks are the most important bricks used in float glass kilns. For large glass kilns, silica bricks are mainly used for the top arch, breast wall, front and rear end walls of the melting section and working section, the top arch of the regenerator and the upper partition wall of the regenerator.