... high purity fused mullite, ordinary fused mullite, finely sintered mullite with all natural bauxite and caustic-burned mullite. Mullite of Our Brand ... foundry. In the current, Our Company can provide mullite with different grades and sizes according to the needs of ... the customers.Mullite:SpecificationChemical composition(%)Al2O3Fe2O3SiO2Na2OAS-170—74≤0.125—28≤0 ...