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Mullite bricks properties
  • Time:May 23, 2023
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Mullite bricks are a type of refractory brick made from mullite as the main raw material, which is a compound of alumina and silica with the chemical formula 3Al2O3·2SiO2. Mullite bricks have several properties that make them useful in high-temperature applications:
1.High-temperature stability

Mullite bricks can withstand temperatures up to 1800°C without significant deformation or degradation. This makes them suitable for use in furnaces, kilns, and other high-temperature equipment.
2.Low thermal conductivity

Mullite bricks have a low thermal conductivity, which means they are good insulators and can help to reduce heat loss in high-temperature systems.
3.Good thermal shock resistance

Mullite bricks have good thermal shock resistance, which means they can withstand rapid changes in temperature without cracking or breaking. This makes them suitable for use in processes where rapid heating and cooling cycles occur.
4.Chemical resistance

Mullite bricks are highly resistant to acidic and basic environments, making them suitable for use in harsh chemical and industrial applications.
5.High mechanical strength

Mullite bricks have a high compressive and flexural strength, which allows them to withstand the weight of heavy loads and resist mechanical wear.
6.Low creep

Mullite bricks have a very low creep rate, meaning they resist deformation under load even at elevated temperatures.

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Overall, mullite bricks are a versatile and reliable refractory material that can be used in a wide range of high-temperature applications where high thermal stability, low thermal conductivity, and excellent chemical and mechanical resistance are required.

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