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High alumina bricks are a type of refractory brick that are primarily composed of alumina (Al2O3) as the main constituent. These bricks are known for their excellent high-temperature properties and resistance to thermal and chemical stresses. Here's what you need to know about high alumina bricks:

  • Alumina content: High alumina bricks typically have an alumina content of 48% to 99%. The alumina content significantly affects the properties of the bricks, with higher alumina content leading to improved refractoriness and higher temperature resistance.

  • High-temperature resistance: High alumina bricks are capable of withstanding high temperatures. They can be used in applications where temperatures reach up to 1800°C (3272°F) or even higher, depending on the alumina content and other factors.

  • Thermal stability: High alumina bricks exhibit excellent thermal stability. They can withstand rapid heating and cooling cycles without significant thermal expansion or contraction, minimizing the risk of thermal stress and cracking.

  • High mechanical strength: High alumina bricks possess high mechanical strength, making them capable of withstanding mechanical stresses and loads in high-temperature environments. They have good resistance to deformation and can support heavy loads.

  • Resistance to thermal shock: High alumina bricks have good resistance to thermal shock, which is the ability to withstand sudden temperature changes without cracking or spalling. This property is crucial in applications where rapid heating or cooling occurs.

  • Chemical resistance: High alumina bricks exhibit good chemical resistance. They are resistant to many acids, alkalis, and other corrosive substances, making them suitable for applications in chemically aggressive environments.

  • Abrasion resistance: Depending on the specific composition and manufacturing process, high alumina bricks can also have good abrasion resistance. This property makes them suitable for applications involving abrasive materials or high-velocity gas flows.

  • Application versatility: High alumina bricks find applications in various industries, including iron and steel, cement, ceramics, glass, and petrochemicals. They are used in furnaces, kilns, incinerators, reactors, and other high-temperature equipment where excellent refractory properties are required.

High alumina bricks are valued for their high-temperature resistance, thermal stability, mechanical strength, and chemical resistance. They are commonly used in demanding industrial applications that involve high temperatures, thermal cycling, and exposure to corrosive or abrasive environments.


Buy low cost high performance "High Alumina Bricks" have the characteristics of strong volume stability at high temperatures, good thermal shock resistant, wear resistance and chemical corrosion resistance. They are usually used on transitional zone and reheater of cement rotary kiln and other thermotechnical equipment that requires thermal shock resistance.








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Refractoriness under loadin 0.2MPa






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