In order to effectively reduce the heat loss of boiler and raise the volume stability of thermal insulation material, the light insulating castable has been developed, which exhibits such features as good construction performance, high volume stability and high strength
Light Insulating Castable
Item | QBJ-0.6 | QBJ-0.8 | QBJ-1.0 | |
AI2O3(%);≥ | 25 | 25 | 28 | |
Volume density(g/cm3);≥ | 110℃×16h | 0.6 | 0.8 | 1.0 |
Rupture strength(MPa);≥ | 110℃×24h | - | 1.0 | 3.0 |
1000℃×3h | - | 1(800℃×3h) | 0~-1.0 | |
Linear change rate(%) | 1000℃×3h | - | 0~-1.0 (800℃×3h) | 0~-1.0 |
Thermal conductivity at 700℃ [W/(m×K)];≤ | 0.25 | 0.28 | 0.35 | |
Long-term use temperature(℃) | 800 | 900 | 1000 | |
