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°C18001800
Bulk Densitygm/cc1.45 max.1.40
Cold Crushing StrengthKg/cm290 min.130
Reheat Change (For 24 hrs.)%+0.5max.at1650°C+0.15at1650°C
Thermal Conductivity
At 400 C Hot Face Temp.1.60 max.1.37
At 600 C Hot Face Temp.W/m K1.60 max.1.38
At 800 C Hot Face Temp.1.50 max.1.32
At 1000 C Hot Face Temp.1.30 max.1.17
At 1200 C Hot Face Temp.1.30 max.1.14
Chemical Analysis
Al2O390.0 min.91.06
SiO29.0 max.8.29
Fe2O30.3 max.0.14
Recommended Laying MortarsCUMIBOND LA 282 / LA 102


i CUMILAG 23, 25, 26 : Calcined clay and Calcined Alumina based product