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Bubble Alumina insulation firebrick

Bubble Alumina insulation firebrick

 
Bubble Alumina insulation firebricks are sintered mainly by high-purity alumina refractory bubble. Their advantages include low bulk density, low thermal conductivity, excellent compression resistance, outstanding high temperature kilns, which work in a high temperature environment, such as synthetic ammonia liquefaction furnace, ethylene gas furnace, etc. Recommended service temperature: less than 1800℃.
 
 

Item
Brands
PL-1.3
PL-1.5
PL-1.7
Al2O3 , %
≥98
Fe2O3 , %
≤0.5
Bulk density g/cm3,
1.3
1.5
1.7
Cold Crush strength (MPa)
6.0
8.0
10.0
Testing temperature when reheated with 2% contracting rate (℃)
 
1700*8
 
 1700*8
 
1750*8
Thermal conductivity ,
(W/m·K)(350℃±25℃)
0.55
0.65
0.75