i Ceramic, Metallurgical
i Carbon black
i Fertiliser
i Iron & Steel
i Power generation


i High temperature kiln hot face & backup lining
i Back up lining
i Primary reformer and hydrogen transfer lines back up,Secondary reformer cold face
i Blast furnace stoves
i High temperature air pre-heaters


CUMILAG insulation exhibit unique combination of chemical, mechanical stability and insulating properties. They are suitable for applications at service temperatures ranging from 1250 C to 1850 C. They can be directly exposed to flame, and combustion products.

Physical PropertiesUNITLimit ValueTypical Value
Maximum Hot Face Temperature°C15501550
Bulk Densitygm/cc1.00 max.1.05
Cold Crushing StrengthKg/cm235 min.40
Reheat Change (For 24 hrs.)%–0.4max.at1450°C-0.2at1450°C
Thermal Conductivity
At 400 C Hot Face Temp.0.40 max.0.31
At 600 C Hot Face Temp.W/m K0.40 max.0.33
At 800 C Hot Face Temp.0.45 max.0.37
At 1000 C Hot Face Temp.0.55 max.0.42
At 1200 C Hot Face Temp.0.60 max.0.46
Chemical Analysis
Al2O355.0 min.57.51
SiO2%40.0 max.38.42
Fe2O31.0 max.0.72
Recommended Laying MortarsCUMIBOND LK FX