High Alumina Insulating Firebricks
High alumina insulating firebricks
CHARACTERISTIC
Mainly consist of high-grade hollow ball and alumina and processed by high temperature sintering. High strength, low thermal conductivity, and applicable for furnace insulation and lining with temperature less than 1400°C.
TECHNICAL DATA
ModelSpecification |
LG-1000 |
LG-900 |
LG-800 |
LG-700 |
LG-600 |
LG-500 |
Al2O3 %≥ |
48 |
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Fe2O3 %≤ |
2 |
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Density kg/m³ |
1000 |
900 |
800 |
700 |
600 |
500 |
|
Compressive Strength MPa≥ |
4 |
3.5 |
3 |
2.5 |
2 |
1.5 |
Reheating Linear Change Rate≤2%×2h testing temperature°C |
1400 |
1400 |
1400 |
1350 |
1350 |
1250 |
|
Thermal Conductivity （350±25°C）W/m·k≤ |
0.5 |
0.35 |
0.35 |
0.3 |
0.25 |
0.2 |
APPLICATION
High alumina brick is mainly used for lining of blast furnace, hot blast furnace, electric furnace top, blast furnace, reverberatory furnace and rotary kiln. In addition, high alumina brick is also widely used in open hearth regenerative lattice brick, plug for gating system, nozzle brick, etc.
