1.Low thermal conductivity,saves fuel
2. Very low heat storage, faster heat and cool-down
reducing cycle times
3.Ligh weight.replaces heavy back-up insulation.
less steel required.
4.Excellent thermal shock resistance
5.Resistant to hot gas erosion
6. Resists most chemical attacks
7.Easy to cut handle and install
8.Low sound transmission
9.Resists penetration by molten aluminum and
other non-ferrous metals
10.Contains no asbestos
| Item | Common | Standard | H Pure | H Alumina | Zirconium |
| AL203(%) | 44 | 46 | 47-50 | 52-55 | 39-40 |
| Fe2O3(%) | 1.2 | 1.0 | 0.2 | 0.2 | 0.2 |
| ZrO2(%) | – | – | – | – | 15-19 |
| Classification Temperature (°C) | 1100 | 1260 | 1260 | 1360 | 1430 |
| Working Temperature (°C) | 1000 | 1050 | 1100 | 1200 | 1350 |
| Density (kg/m3) | 96/128 | 96/128 | 96/128 | 128/160 | 128/160 |
| Permanent linear shrinkage(%)(after24 hours, density 128kg/m3) | -4
(1000°C) |
-3
(1000°C) |
-3
(1100°C) |
-3
(1250°C) |
-3
(1350°C) |
| Tensile strength (Mpa) density 128kg/m3) | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 |
1. Refractory lining for industrial furnaces in walls,
roofs,doors,stacks,etc.
2.Combustion chamber liners, boilers and heaters
3.Back-up insulation for brick and monolithic refractor
4. Transfer of molten aluminum and other non-ferrous Metals
5. Expansion joint boards
6.Barrier against flame or heat
7. Hot face layer for high velocity or abrasive furnace atmosphere
