CUMILAG 25 (Insulation Refractories)

CUMILAG 25 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.

CUMILAG

USER INDUSTRIES

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

APPLICATIONS

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

cumilag 25 properties

Physical Properties UNIT Limit Value Typical Value
Maximum Hot Face Temperature °C 1350 1350
Bulk Density gm/cc 0.85 max. 0.80
Cold Crushing Strength Kg/cm2 20 min. 25
Reheat Change (For 24 hrs.) % -0.5 max. at 1300°C -0.2 at 1130°C
       
Thermal Conductivity      
       
At 400°C Hot Face Temp. W/m K 0.27 max. 0.19
At 600°C Hot Face Temp. W/m K 0.30 max. 0.22
At 800°C Hot Face Temp. W/m K 0.36 max. 0.30
At 1000°C Hot Face Temp. W/m K 0.43 max. 0.35
At 1200°C Hot Face Temp. W/m K
       
Chemical Analysis      
       
Al2O3 % 50.0 min. 51.72
SiO2 % 45.1
Fe2O3 % 1.0 max. 0.8
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