Refractories 
1.Description
Fused Mullite is produced by Bayer process alumina and high purity quartz sand while fusing in super-large electric arc furnace. It has a high content of needle-like mullite crystals.
2.Characteristics
Fused Mullite characterized with high melting point, low reversible thermal expansion and excellent resistance to thermal shock, deformation under load, and chemical corrosion at high temperature.
3.Application
Fused Mullite is widely used as raw materials for high grade refractories, such as the lining bricks in glass kiln furnace and bricks used in hot wind furnace in steel industry. It’s also used in ceramic kiln and petrochemisty industry and many other application.
4.Specification
Items Unit Index Chemical Composition Al2O3 % 70-77 SiO2 % 22-29 Fe2O3 % 0.10 max R2O3 % 0.50 max RO % 0.30 max Refractoriness ℃ 1840 min Bulk density g/cm3 3.0 min Mullite Phase 3Al2O3・2SiO2 % 95 min Glass Phase % 5 max Grain Size mm 8-5, 5-3, 3-1, 1-0 Fine Powder mesh -80, 120, 180, 220, 325F