Silica brick is a refractory material primarily made of silica with a minimum content of 94%. It exhibits excellent resistance to acidic slag, a high load softening temperature, and irreversible volume expansion below 600°C, making it ideal for use in high-temperature load-bearing parts in various industries.
| Application | Glass Kiln, Other Kiln, Steel Kiln |
|---|---|
| Refractoriness (℃) | 1710 |
| Size (mm) | As your requirements |
| Raw Material | SiO₂ |
| Capacity | |
| Package | Stretch film + corner protectors + straps + trays |
Silica brick is a refractory product with silica as its main component, comprising over 94% of the content. As an acidic refractory material, it possesses robust resistance against acidic slag and exhibits a high load softening temperature. When heated below 600°C, silica bricks undergo irreversible volume expansion, leading to the closing of joints that ensures good airtightness and structural strength of the masonry. Silica bricks are commonly employed for load-bearing parts such as the partition walls of the carbonization and combustion chambers of coke ovens, regenerator and sedimentation chambers of the steelmaking open hearth furnace, soaking furnace, refractory material of the glass melting furnace, and the vaults of ceramic firing kilns. In addition, they are utilized in high-temperature load-bearing parts of hot blast stoves and the tops of acid open hearth furnaces.
| Item | RBTG-94 | RBTG-95 | RBTG-96A | RBTG-96B |
| Refractoriness（℃） ≥ | 1710 | 1710 | 1710 | 1710 |
| Bulk Density（g/cm3） ≥ | 1.8 | 1.8 | 1.87 | 1.8 |
| True Density（g/cm3） ≤ | 2.35 | 2.35 | 2.34 | 2.34 |
| Apparent Porosity（%） ≤ | 22 | 21 | 21 | 21 |
| Cold Crushing Strength（MPa） ≥ | 30 | 32 | 35 | 35 |
| @1500°×2h Permanent Linear Change（%） | 0 +3 | 0 +3 | 0 +3 | 0 +3 |
| @0.2MPa Refractoriness Under Load（℃） ≥ | 1630 | 1650 | 1650 | 1680 |
| SiO2（%） ≥ | 94 | 95 | 96 | 96 |
| Fe2O3（%） ≤ | 1.5 | 1.5 | 0.8 | 0.7 |
| Al2O3+TiO2+R2O（%） ≤ | 1.0 | 0.7 | 0.8 |
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