Product Description
1.Definition:Melting furnace used high alumina insulating fire brick for refractory is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory.
2. Product features
1 high porosity
2.small volume density
3.good insulation effect
4.high mechanical intensity
5.small thermal conductivity and long service life.
3. Applications
Melting furnace used high alumina insulating fire brick for Refractory is various industrial kilns&furnaces,it is a kind of essential refractory for energy saving and temperature preservation.This series of High Alumina fire resistant brick are made of selected high alumina bauxite, kaolin caly,hollow microsphere as the mian material.By shaping at high pressure and sintering at high temperature.
4. technical parameter:
| Lg-1.0 | Lg-0.9 | Lg-0.8 | Lg0.7 | Lg0.6 | LG0.5 |
AL2O3% | 48 |
Fe2O3% | 2.0 |
Densityg/ cm3 ≤ | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 |
Compressive strengthMpa≥
| 4.0 | 3.5 | 3.0 | 2.5 | 2.0 | 1.5 |
linear change on reheating≤2%×2h Lab Temperature °C | 1400 | 1400 | 1400 | 1350 | 1350 | 1250 |
thermal conductivity350°C±25 °C W/m.k | 0.50 | 0.35 | 0.35 | 0.30 | 0.25 | 0.20 |