Lightweight high alumina brick is a kind of lightweight insulation brick with Al₂O₃ content not less than 46%. It is a kind of refractory material with features of high temperature heat resistant and insulation.
1. Low Volume Density;
2. Lower Thermal Conductivity;
3. Excellent Heat Insulation;
4. Significant Energy-Saving Effect;
Technical Data
| Item/Grade | LG140-1.2 | LG140-1.0 | LG140-0.8L |
|---|---|---|---|
| Al2O3, % | ≥48 | ||
| Fe2O3, /% | ≤2 | ||
| Bulk Density, g/cm³ | ≤1.2 | ≤1 | ≤0.8 |
| Cold Crushing Strength, MPa | ≥4.5 | ≥3.5 | ≥2.5 |
| Permanent Linear Change, % (T/℃*12h) | 1400 | 1350 | 1250 |
| -2~1.0 | |||
| Thermal Conductivity Coefficient, W/(m·K) Average Temperature (350±25℃) | ≤0.55 | ≤0.50 | ≤0.35 |
Applications of Alumina Insulation Brick
Used in insulation layer of industrial kilns like ceramic tunnel kilns, roller kilns, shuttle kilns, wall kilns, etc. As well as other locations without strong erosion of high-temperature molten materials.
