To Order, Please Call: 1-877-365-2995 or Email:

KT Refractories US Company

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

Silica Bricks

Silica 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 sag 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:

  • IFB with Mullite for light weight, high strength insulating properties, click here to view details of Insulating Firebricks (IFB) with Mullite
  • Corundum Mullite Bricks, click here to see Corrundum Mullite Bricks details.
  • Zircon Mullite Bricks, like high alumina bricks, zirconia bricks are used in the superstructure of glass melting tanks. However, they possess even higher strength and are more resistant to corrosion. Click here to see details of Zircon Mullite Bricks
  • KT Refractories distributes Silica Bricks, Corundum Mullite Bricks, Zircon Mullite Bricks and insulating firebrick with Mullite at the best quality with the most competitive prices worldwide.

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

    Typical Silica 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
    FAS-70 SA-40P SA-40
    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 0.7Max 0.5 0.8Max 0.5
    Na2O % 0.4 Max 0.3        

    Typical Application for Mullite Bricks:

    • The hot end of regenerative chambers of glass melters, glass furnace
    • The superstructure of the furnace
    • The arch of glass fiber melters
    • The lining of blast furnace
    • Hot blast furnace
    • Others