used 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. Fused Mullite is one of the main raw materials used by the refractory industry for applications requiring thermal shock resistance and corrosion resistance. The YUFA Group also produces micro sodium mullite with a sodium oxide content of less than 0.1%, and the primary crystal phase is mullite. Due to the reduced sodium oxide content of micro-sodium mullite, its refractoriness, volume density, flexural strength, compressive strength, true density, hardness, etc. are significantly improved compared to Common mullite. Micro-sodium mullite is mainly used in mullite firing plates, precision casting, high-quality refractory materials and other fields. Our company can produce various specifications of granules and fine powder according to customer needs.
