Why is magnesia used in bricks?
  • Time:Jun 09, 2023
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Magnesia (magnesium oxide) is used in bricks primarily for its excellent thermal and chemical properties, which make it well-suited for high-temperature applications where other materials may fail. Magnesia-based bricks are known as magnesite or magnesia bricks.

Some of the key reasons why magnesia is used in bricks include:

1.High melting point: Magnesia has a very high melting point (around 2,800°C/5,072°F), making it ideal for use in furnaces, kilns, and other high-temperature equipment.

2.Excellent thermal stability: Magnesia retains its strength and thermal stability at high temperatures, making it resistant to thermal shock and deformation.

3.Corrosion resistance: Magnesia is highly resistant to chemical corrosion and erosion, making it suitable for use in harsh environments where other materials may fail.

4.Low thermal conductivity: Magnesia has a low thermal conductivity, which helps to reduce heat loss and improve energy efficiency.

5.Availability and affordability: Magnesia is a relatively abundant mineral and is widely available, making it an affordable option for refractory applications.

refractory bricks are commonly used in hot blast stoves

Overall, the unique properties of magnesia make it a valuable material for use in refractory bricks, particularly in high-temperature industrial applications where resistance to thermal and chemical stress is critical.

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Refractoriness under load high

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flexibility corrosion

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