Mullite is a kind of refractory with excellent performance, which has the characteristics of high temperature resistance, low thermal expansion coefficient, good thermal shock resistance and strong chemical corrosion resistance, and is widely used in many industrial fields. The following are the main uses of mullite:

I. Iron and steel industry

Blast furnace: used in the shaft and bottom of blast furnace, as lining material, it can withstand high temperature and slag erosion.

Hot blast stove: mullite brick and castable are used in the vault, combustion chamber and checker brick of hot blast stove, which has good thermal shock resistance and heat insulation performance.

Ladle and tundish: mullite brick and castable are used for lining of ladle and tundish, which can effectively resist the corrosion of molten steel.

Heating furnace: used for the lining of heating furnace, which can withstand the erosion of high temperature airflow.

II. Cement industry

Cement rotary kiln: mullite brick is used in the transition zone, firing zone and other high-temperature parts of cement rotary kiln, with good high-temperature tolerance and chemical erosion resistance.

III. Glass industry

Glass melting furnace: mullite brick and castable are used for the roof, breast wall and other high-temperature parts of glass melting furnace, which can effectively resist the corrosion of molten glass.

IV. Ceramic industry

Ceramic kiln: mullite brick and castable are used for lining and kiln furniture of ceramic kiln, which can ensure uniform temperature in the kiln and improve product quality.

V. Petrochemical industry

Cracking furnace: Mullite castable and brick are used as the working lining of cracking furnace, which can withstand high temperature and chemical erosion.

Waste heat boiler: used for lining of waste heat boiler, with good heat insulation performance.

VI. Energy and electricity industry

Power Plant Boiler: Wear-resistant layer and thermal insulation lining of cyclone separator used in power plant boilers in mullite brick.

Garbage incinerator: used as the lining of garbage incinerator, which can withstand high temperature and chemical erosion.

VII. Electronics industry

Electronic packaging materials: Mullite is used as electronic packaging materials because of its low dielectric constant and thermal expansion coefficient, such as induction coil capacitors, substrates bearing semiconductor devices and resistors.

VIII. Optical materials

High-temperature optical window material: Mullite material has good mid-infrared wave transmission performance and is used as high-temperature optical window material.

IX. Other applications

High-temperature protective tube and crucible: Mullite material is used to make high-temperature protective tube and metal melting crucible, which has good corrosion resistance to high-temperature gas.

Thermal insulation materials: Mullite thermal insulation bricks and fibers are used as thermal insulation layers of various high-temperature industrial furnaces, which have good thermal insulation performance.

Mullite, with its excellent high-temperature performance and corrosion resistance, has become an indispensable refractory in high-temperature industry, which is widely used in many industries, significantly improving the service life and operation efficiency of equipment.