Fused mullite

Colour: gray Manufactured from pure quartz sand and industrial alumina in electric arc furnace, with high melting point, excellent thermal stability, low reversible thermal expansion and resistance to thermal shock and chemical corrosion at high temperature, Fused Mullite is widely used as lining brick in glass body kiln and large hot wind furnace in iron-making blast furnace, as well as in ceramic kiln furniture and petrochemistry. 

Fused Mullite

Type Index Guarantee value Typical value Chemical Composition (%) Al2O3 70-77 75.30 SiO2 22-29 24.08 Fe2O3 ≤0.1 0.05 R2O3 ≤0.5 0.18 RO ≤0.3 0.28 Mullite phase 3Al2O3 2SiO2(%) ≥95 Glass phase (%) ≤5 Linear expansion coefficient (1/°C) -6.0×10-6 Density of volume (g/cm3) ≥3.0 Refractoriness( °C ) ≥1840 Grain size (mm) 5-3 3-1 1-0 Color White or Grey

Fused mullite