Fire Clay Insulation Brick
Fire Clay Insulation Brick is often used as the insulation layer of thermal equipment such as ignition kilns, flues, refining devices, heating devices, gas furnaces and pipelines, soaking furnaces, annealing furnaces, reaction chambers, etc.
Bulk Density: ≤0.5-1.5g/cm³;
Thermal Conductivity: ≤0.23-0.65W/m·k;
Cold Crushing Strength: ≥0.8-6MPa;
Permanent Linear Change: -2-1%;
Technical Data
| Item/Grade | NG140-1.5 | NG135-1.3 | NG135-1.2 | NG130-1.0 | NG125-0.8 | NG120-0.6 | NG115-0.5 | ||
|---|---|---|---|---|---|---|---|---|---|
| Bulk Density (g/cm³) | μ0 | ≤ | 1.5 | 1.3 | 1.2 | 1.0 | 0.8 | 0.6 | 0.5 |
| σ | / | 0.06 | |||||||
| Cold Crushing Strength/MPa | μ0 | ≥ | 6 | 5 | 4.5 | 3.5 | 2.5 | 1.3 | 1.0 |
| σ | / | 1.0 | 0.5 | ||||||
| Xmin | / | 5.5 | 4.5 | 4.0 | 3.0 | 2.0 | 1.0 | 0.8 | |
| Permanent Linear Change/% | Experimental Conditions | 1400℃*12h | 1350℃*12h | 1300℃*12h | 1250℃*12h | 1200℃*12h | 1150℃*12h | ||
| Xmin~Xmax | -2-1 | ||||||||
| Thermal Conductivity Coefficient/[W/(m·K)] ≤ Average Temperature (350±25)℃ | Xmin | ≤ | 0.65 | 0.55 | 0.50 | 0.40 | 0.35 | 0.25 | 0.23 |
Advantages of Fire Clay Insulation Brick
1. Lower Thermal Conductivity;
2. High Porosity, Low Volume Density;
3. Good Thermal Shock Resistance;
4. Good Heat Insulating Effect;