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The corundum-mullite castable

The corundum-mullite castable uses high-quality refractory materials, and the castable has good thermal shock resistance.
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  • Description
  • The corundum-mullite castable is made from brown corundum, white corundum, andalusite, mullite, and high-quality bauxite as the main raw materials, combined with ultrafine refractory powder through a scientifically formulated mixing process. It has high purity, relatively high density, good structural integrity, low creep rate, small thermal expansion, excellent thermal shock resistance, and strong chemical erosion resistance. It is widely used in refractory materials and other industries. The corundum-mullite castable, made from high-quality refractory raw materials, exhibits good thermal shock resistance.

    Chemical AnalysisItemStandard
    Al2O3≥85%
    Fe2O3≤1%

    Physical Properties

      

    Item

    Unit

     GMJ-85GMJ-90
    Refractoriness°C ≥1800≥1800
    High Temperature crushing Strength

    1100°C×24h

    MPa≥60≥80
    1100°Cx3h≥80≥100
    1500°Cx3h≥100≥120
    Modulus Of Rupture110℃x24hMPA≥6≥8
    1100'℃x3h≥7≥10
    1500°Cx3h≥10≥12
    Reheating linear Change1100°C×3h%±0.2±0.2
    1500°C×3h±0.3±0.3
    Bulk Density110°C×24hg/cm³≥2.90≥3.10

Keywords:

The corundum-mullite castable

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