Silica Insulation Brick
Application:
Commonly used in coke oven insulation layers, glass kiln vaults, hot blast furnace walls and domes. It does not directly contact high-temperature molten materials and alkaline gas working layers.
Technical Data:
| Item/Grade | GGR – 1.00 | GGR – 1.10 | GGR – 1.15 | GGR – 1.20 | |
|---|---|---|---|---|---|
| SiO₂, % | ≥ | 91 | 91 | 91 | 91 |
| Bulk Density, g/cm³ | ≥ | 1.00 | 1.10 | 1.15 | 1.20 |
| Cold Crushing Strength, MPa | ≥ | 2.0 | 3.0 | 5.0 | 5.0 |
| Permanent Linear Change On Reheating, % | 1 (≥1500°C, 2h) | / (≥1500°C, 2h) | 0.5 (≥1500°C, 2h) | 0.5 (≥1500°C, 2h) | |
| 0.1MPa Refractoriness Underload, °C | 1400 (≥1450°C, 2h) | 1420 (≥1450°C, 2h) | 1500 (≥1450°C, 2h) | 1520 (≥1450°C, 2h) | |
| Thermal Conductivity Coefficient, W/(m·K) Average Temperature (350±10°C) | ≤ | 0.55 | 0.60 | 0.65 | 0.70 |
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