Traditional dense refractory bricks have high density but almost no insulation effect; traditional lightweight insulation materials have good insulation effect but low strength.
Firebird High Strength HeatGuard Brick combines the high strength of dense refractories with the low thermal conductivity of lightweight insulation materials.This product is suitable for insulating the inner walls of high-temperature kilns. It can be used directly in the kiln lining process to replace traditional refractory products, achieving long-term energy savings and significant economic benefits.
High Strength HeatGuard Brick is suitable for insulating the inner walls of high-temperature kilns. It can be used directly in the kiln lining process to replace traditional refractory products, achieving long-term energy savings and significant economic benefits. Typical applications include rotary kilns, steel ladles, roller hearth kilns, glass furnaces, electrolytic aluminum smelters, boilers, hot air ducts, and more.
| Grade | HHG-1.80 | HHG-1.15 | HHG-1.25 | HHG-1.35 | ||
| Color | White | Yellowish | Yellowish | Yellowish | ||
| Bulk Density | g/cm³ | 1.82 ± 0.05 | 1.15 ± 0.05 | 1.25 ± 0.05 | 1.35 ± 0.05 | |
| Cold Crushing Strength | MPa | ≥ 45 | ≥ 15 | ≥ 20 | ≥ 35 | |
| Permanent Linear Change | 1450°C × 6h | % | ≤ 0.2 | – | – | – |
| 1300°C × 6h | % | – | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 | |
| Thermal Conductivity | @800°C | W/(m·K) | ≤ 0.45 | ≤ 0.35 | ≤ 0.42 | ≤ 0.5 |
| @ 1000°C | W/(m·K) | ≤ 0.5 | ≤ 0.4 | ≤ 0.47 | ≤ 0.55 | |
| Refractoriness Under Load | 0.2MPa,T0.6 | °C | ≥ 1450 | – | ≥ 1200 | ≥ 1250 |
| Modulus of Rupture | @ 1000°C | MPa | ≥ 18 | – | – | – |
| Thermal expansion | @800°C | % | 0.39 | – | – | 0.46 |
| @1000°C | % | 0.53 | – | – | 0.54 | |
| Al2O3 | % | ≥ 45 | ≥ 42 | ≥ 35 | ≥ 30 | |
| Fe2O3 | % | ≤ 0.8 | ≤ 0.6 | ≤ 0.5 | ≤ 0.4 | |
| SiO2 | % | ≤ 50 | ≤ 45 | ≤ 42 | ≤ 40 |
