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Mullite insulation firebrick

Mullite insulation firebrick 

Mullite insulation firebricks are made from high purity materials by unique techniques, so they have a lot of advantages such as stable volume, excellent thermal stability, high intensity, low thermal conductivity, etc, They are an ideal kind of energy-conserving products, which can be widely used as linings or as thermal preservation layers in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry, machinery industry, etc. Recommended service temperature: less than 1600℃.
 
 

 
Item
Brands
MI-1.2
MI-1.0
MI-0.9
MI-0.8
MI-0.7
MI-0.6
MI-0.5
Al2O3 , %
≥52
Fe2O3 , %
≤2.0
Bulk density g/cm3,
≤1.2
≤1.0
≤0.9
≤0.8
≤0.7
≤0.6
≤0.5
Cold Crush strength (MPa)
5.0
4.0
3.5
3.0
2.5
1.5
1.0
Testing temperature when reheated with 2% contracting rate (℃)
 
1550
 
1500
 
1450
 
1400
 
1400
 
1350
 
1300
Thermal conductivity ,
(W/m·K)(350℃±25℃)
0.35
0.32
0.30
0.28
0.24
0.20
0.18