Mullite
Sintering at high temperature above 1750℃
Mullite is a mineral generated by aluminosilicate at high temperature, and it can be formed when the aluminosilicate is heated manually. The natural mullite crystal is slender needle-like and has a radioactive cluster shape; the mullite ore is used to produce high-temperature refractories, with a melting point of 1,870°C. Besides, the mullite is also a high-quality refractory material, featuring the uniform expansion, excellent thermal shock resistance, high softening point under a fixed load, small creep value at high temperature, high hardness and superior resistance to chemical corrosion, and it currently includes the high-purity fused mullite, ordinary fused mullite, sintered mullite from all-natural bauxite concentrate and light-burning mullite.
Quantity
The mullite produced by our company uses high-quality natural bauxite as raw material. It is processed through a selection process to remove impurities and undergo multi-stage homogenization treatment to ensure the uniformity of the raw material composition. The treated raw materials are then sintered at a high temperature above 1750℃. During the sintering process, the heating rate, holding time and cooling process are accurately controlled through an advanced kiln control system to allow the mullite crystals to fully grow and develop, forming a sintered mullite product with high content, high volume density, good thermal shock stability, low high-temperature creep value and good chemical corrosion resistance. This product has stable quality and is an ideal raw material for the production of various shaped and unshaped refractory materials, advanced sanitary ware blanks, precision castings and other products.
