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How much do you know about the composition of mullite?

Date:2019-11-07 10:59 | From:Zhengzhou Sunrise Refractory | Author:admin
Sunrise refractory has invested a lot of manpower, material and financial support in the production of refractory bricks. With strong production strength and advanced technical support, it has always been at the forefront of the industry. It is the leader in the refractory industry. Sunrise refractory is Let us introduce the chemical composition of mullite bricks.
Mullite is a high-quality refractory raw material. 
 
At present, there are mainly high-purity fused mullite, ordinary fused mullite, all-natural bauxite concentrate sintered mullite and light burned mullite. Mullite is a series of minerals composed of aluminosilicates, which are rare. Mullite is a mineral produced by aluminosilicates at high temperatures, and mullite is formed when artificially heating aluminosilicates. Natural mullite crystals are elongated needle-like and radiate clusters. The mullite mine is used to produce high temperature refractories. Mullite is the only stable binary compound in the Al2O3-SiO2 binary system under normal pressure. The chemical formula is 3Al2O3-2SiO2. Natural mullite is very rare, and it is usually synthesized by sintering or electrofusion.
 
Mullite chemical formula: A1xSi2-xO5.5-0.5x
Density: 3.16g/cm3
Mohs hardness: 6~7
Refractoriness: still stable at 1800 °C, 1810 °C decomposition into corundum and liquid phase mullite is a high-quality refractory material, it has uniform expansion, excellent thermal shock stability, high softening point, high temperature creep It has the characteristics of small change value, high hardness and good chemical corrosion resistance. 
 
Mullite is a kind of high-quality refractory raw material, which has the characteristics of uniform expansion, excellent thermal shock stability, high load softening point, low temperature creep value, high hardness and good chemical corrosion resistance. The stone ore mine is made by high-temperature melting of advanced industrial electric furnace. It has the characteristics of uniform expansion, excellent thermal shock stability, high load softening point, low temperature creep value, high hardness and good chemical corrosion resistance. Mullite is an ideal material for industries such as metallurgy, ceramics, building materials, chemicals, power and foundry.
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