White fused mullite is created in an electric arc furnace, like white fused alumina
oxide, using a high purity alumina but also adding in silica. This fused combination of
materials has a unique crystal shape that lends well to certain applications.
Investment cast shell or monoliths.
Fused Mullite is manufactured by fusing a mixture of high purity Bayer Alumina
and pure Quartz in a tilting type arc furnace at a temperature around 2000 deg C.
Controlled cooling of the molten mass ensures a high degree of mullitization
characterized by well-defined columnar crystals.
The cooled crude is further crushed, cleaned of magnetic impurities in high
intensity magnetic separators and classified into desired size fractions.
Fused Mullite is one of the main raw materials used by the refractory industry for
applications requiring thermal shock resistance and corrosion resistance.
