The main properties of fused mullite sand are high-purity silica and industrial alumina powder or high alumina bauxite. It is broken and mixed in the proportion of Al2O3: SiO2 = 0.7:1.0, and melted into pure mullite clinker in the electric arc furnace at a high temperature of 1850-2040 ℃. According to different raw materials, fused mullite sand can be divided into high-purity fused mullite sand and fused mullite sand
Electric fused mullite sand has high melting point, high strength, low linear expansion rate, strong chemical corrosion resistance and good thermal shock resistance. It is often used as high-grade refractory raw materials to produce high-grade refractory castables, refractory bricks, kiln furniture bricks, ceramic products, etc., and has obtained good use results
