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KT Refractories US Company

Mullite Bricks, Corundum Mullite Bricks Mullite Bricks, Corundum Mullite Brick

Mullite Bricks

Mullite Bricks are made of synthetic fused mullite or sintered mullite, pressed by selected shaping processes, and fired in high temperature furnaces. Mullite bricks offer high density, low porosity, good hot strength, and good slag resistance. Mullite bricks are preferred for high temperature, high load applications, such as at the hot end of regenerative chambers of glass melters, the superstructure of the furnace, and the arch of glass fiber melters, due to their excellent thermal properties, excellent strength at high temperature, great resistance to thermal shock, etc.

Other Refractory bricks with Mullite:

  • Insulating Firebricks (IFB) with Mullite for light weight, high strength insulating properties
  • Corundum Mullite Bricks
  • Zircon Mullite Bricks, like high alumina bricks and zirconia bricks, are used in the superstructure of glass melting tanks. However, Zircon Mullite Bricks possess even higher strength and corrosion resistance.
  • KT Refractories distributes Mullite Bricks, Corundum Mullite Bricks, Zircon Mullite Bricks, and insulating firebrick with Mullite of the best quality at the most competitive prices worldwide.

    Call 1-877-365-2995 to order Mullite Bricks, Corundum Mullite Bricks, Zircon Mullite Bricks, insulating firebrick with Mullite, and our fast, responsive customer service and reliable delivery service will save you time and money!

    Typical Mullite Bricks Technical Data Specs

    Technical data for other firebricks are available upon request.
    Mullite Bricks Specification Chemical Composition %
    Bulk Density (g/cm3) 2.9-3.30 Al2O3 70.1-75.47
    Apparent Porosity (%) < 10 SiO2 19.32-21.6
    Cold Crushing Strength (MPa) 250-500 Fe2O3 0.92-1.90
    Refractoriness (°C) 1730-1800 CaO 0.23-0.70
    Refractoriness under load 0.2MPa (°C) ≥1700 MgO 0.16-1.5
    Thermal Expansion (20-1000 °C) 0.60-0.65 TiO2 3.1
     

    Typical Mullite Bricks

    Mullite Bricks
    Properties
    FAS-70 SA-40P SA-40
    SPEC TYPICAL SPEC TYPICAL SPEC TYPICAL
    Apparent Porosity % 20 Max 17.5 19 Max 16.5 20 Max 17.5
    Bulk Density g/cm3 2.5 Min 2.65 3.0 Min 2.95 2.9 Min 2.95
    Cold Crushing Strength MPa 50 Min 85 60 Min 85 60 Min 85
    Chemical   Composition Al2O3 % 70 Min 76 87 Min 87 85 Min 87
    SiO2 % 28 Max 22.5
    Fe2O3 % 0.4 Max 0.5 0.7 Max 0.5 0.8 Max 0.5
    Na2O % 0.4 Max 0.3        
     

    Typical Application for Mullite Bricks:

    • Hot end of regenerative chambers of glass melters, glass furnace
    • Superstructure of the furnace
    • Arch of glass fiber melters
    • Blast furnace lining
    • Hot blast furnace