Mullite-Sillimanite Refractory Brick for Ladle and Refining Furnace
Mullite-Sillimanite refractory brick for ladle and refining furnace
Mullite-Sillimanite bricks are made from good quality and superpure raw materials, with strictly classified fillings according to their grades. These fillings can form a uniform pore structure after burnt during the process of manufacture. Each grade of products has unique design to meet different thermal, physical and chemical demands.
physical and chemical:
Item | LSM-75 | LSM-70 | LS-65 | LS-60 |
Al2O3 % ≥ | 75 | 70 | 65 | 60 |
SiO2 % ≤ | 23 | 25 | 32 | 37 |
Fe2O3 % ≤ | 0.4 | 0.4 | 0.5 | 1 |
Bulk density g/cm3 ≥ | 2.7 | 2.6 | 2.5 | 2.3 |
Apparent porosity % ≤ | 18 | 18 | 18 | 19 |
Cold crushing strength MPa ≥ | 100 | 100 | 80 | 80 |
Refractoriness under load °C (0.2MPa,0.6%)≥ | 1680 | 1680 | 1650 | 1600 |
Mullite-Sillimanite bricks primarily used for the key parts of the furnace of glass furnace, alkali-free glass fiber furnace, blast furnace hot blast stove, refractory-material tunnel kiln, etc.
We can produce common shaped and irregular shaped refractory brick. And we can adjust our specifications for your application.


1.We offer free of charge samples.
2..We give suggestions to customers according to your specific requirement to extend the service life of your kiln and save money for you.
3.We pay much attention to the production procedures and testing.
4.We offer good after-sale service.
Zhengzhou Sunrise Refractory Co., Ltd. is mainly engaged in the production and development of refractory
materials for glass , petrochemistry, metallurgy, construction and nonferrous metal industries. Our main
products include fused cast AZS 33, 36,41, fused cast αβ alumina brick, crucibles, furnace fireclay bottom
block, silica, high alumina, magnesia, corundum, chrome, zircon, mullite, zirconia mullite, silicon carbide,
sillimanite, alumina bubble bricks, various insulation bricks, and ceramic fiber products,etc.
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