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

Fe2O3 %≤

2

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.


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