Chemical composition of magnesia alumina brick
  • Time:Aug 29, 2023
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  Magnesia Alumina Brick is a common refractory material with good refractory performance and chemical stability. Its chemical composition is mainly composed of magnesium oxide (MgO) and aluminum oxide (Al2O3), often including other auxiliary components.

  The following are the common chemical components and functions of magnesia-alumina bricks:

  1. Magnesium oxide (MgO): Magnesium oxide is one of the main components of magnesia-alumina bricks. It has a high melting point, high thermal stability and excellent alkali resistance. Magnesium oxide can maintain structural stability in high-temperature environments, and has good resistance to acidic and alkaline slurries.

  2. Alumina (Al2O3): Alumina is another important component. It has good fire resistance and corrosion resistance. Alumina can provide strength and wear resistance, while increasing the stability and durability of magnesia-alumina bricks.

  3. Auxiliary components: In addition to the main components, some auxiliary components are often added to magnesia-alumina bricks, such as silicate, silicon nitride, silicon carbide, etc. These auxiliary components can improve the characteristics of magnesia-alumina bricks, such as increasing thermal shock resistance stability, reducing permeability, and improving erosion resistance.


  It is worth noting that the specific magnesium oxide and alumina content and the type and proportion of auxiliary ingredients may vary between different manufacturers and products. According to different application needs and process requirements, the chemical composition of magnesia-alumina bricks may vary.

  Despite the common chemical composition, different magnesia-alumina brick products may have slight differences, so when selecting and using, you should refer to the technical specifications and suggestions provided by the supplier according to the specific situation.

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