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Thermal Ceramics Kaolite 2500-LI Insulation Castables
Categories: Ceramic; Oxide

Material Notes: Kaolite 2500-LI is a high-strength lightweight castable that contains an intermediate-purity calcium-aluminate cement. Total iron oxide contents of 0.9% enables use where hydrogen or reducing atmospheres are present. Its low thermal conductivity and density produces the most economical 2500°F (1371°C) insulating castable on a per cubic foot basis.


  • Light weight and low thermal conductivity reduce both the quantity of heat storage and heat transfer producing significant savings in furnace fuel consumption
  • Lower densities reduce the amount of supporting furnace steelwork required and provide more insulation with a thinner lining.
  • Applications:

  • Backup insulation in two component linings in petrochemical process units
  • Hot face lining in ductwork from waste heat recovery boilers and process unit
  • F.C.C.U. linings - regenerator.
  • Hydrogen or reducing atmosphere linings
  • Radiant section in steam flood generators.
  • Hydrogen or reducing atmosphere linings.
  • Steam flood generator convection sections and target walls
  • Cat cracker regenerator linings
  • Petrochemical applications
  • Information provided by Thermal Ceramics

    Data has not been recently verified. Please contact manufacturer for current information.

    Available Properties
    • Density, Fired at 1500°F
    • Density, Fired at 2500°F
    • Modulus of Rupture, ASTM C133, Dried 18-24 hours at 220°F
    • Modulus of Rupture, ASTM C133
    • Modulus of Rupture, ASTM C133
    • Compressive Strength, Fired 5 hours at 1500°F
    • Compressive Strength, Dried for 18-24 hours at 220°F
    • Compressive Strength, Fired 5 hours at 2500°F
    • Thermal Conductivity, ASTM C417
    • Thermal Conductivity, ASTM C417
    • Thermal Conductivity, ASTM C417
    • Thermal Conductivity, ASTM C417
    • Maximum Service Temperature, Air
    • Shrinkage, ASTM C113
    • Shrinkage, ASTM C113
    • Shrinkage, ASTM C113, Dried 18-24 hours
    • Shelf Life
    • Al2O3
    • Alkalis
    • CaO
    • Fe2O3
    • MgO
    • SiO2
    • TiO2
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