1.Made by fused or sintered alumina as the main material by shaping at high pressure and sintering at high temperature.
2.Al2O3 content above 48%.
3.Bulk density is 0.5-1.2g/cm3,the porosity is 66%-73%, crushing strength is 1.5-8.1MPa, thermal conductivity is 0.291-0.582W/(m.K) (1350°C)
4.Working temperature:lesst than 1400°C,Max working temperature 1350°C - 1650°C.
What is the Feature of Our brick kiln roller?
1.Low levels of iron and other impurities;
2.High mechanical intensity;
3.High refractoriness, can contact with the flame directly, suitable for various atmosphere;
4.High porosity, low volume density, low thermal conductivity;
5.Good heat insulating performance and energy-efficient;
6.Excellent thermal shock resistance;
7.Strong resistance to the corrosive gas and slag;
8.Long service life
What is the Applications of our brick kiln roller?
Light weight corundum bricks can be in direct contact with the flame.
It can be used as inner lining brick of industry kilns wall and industry furnance.such as blast furnace, hot blast stoves ,electric arc furnace, cement kiln,melting furnace, ignition furnace, flue, refining equipment, heating equipment and piping, regeneration device, gas furnace, soaking furnace, annealing furnace, heat reaction chamber and other thermal industrial equipment.
Specification of Mullite lightweight insulation fire brick
| ITEM | JT23 | JT26 | JT28 | JT30 | JT32 |
| (℃)Using temperature | 1300 | 1430 | 1520 | 1550 | 1600 |
| (g/cm3)Density | 0.6 | 0.8 | 0.9 | 1.0 | 1.1 |
| (%)Reheating linear shrinkage | 0.4 | 0.5 | 0.8 | 0.8 | 1.0 |
| (Mpa)Cold crushing strength | 1.8 | 1.8 | 2.5 | 2.8 | 3.5 |
| (Mpa)Room temperature flexural strength | 1.2 | 1.2 | 1.6 | 1.6 | 2.2 |
| (350℃ W/mk)Thermal Conductivity | 0.25 | 0.26 | 0.32 | 0.37 | 0.42 |
| (×10-6/℃)Thermal expansion coefficient | 0.47 | 0.47 | 0.48 | 0.48 | 0.49 |
| Al2O3 | 45 | 54 | 64 | 72 | 80 |
| Fe2O3 | 0.9 | 0.9 | 0.8 | 0.7 | 0.5 |
