The uniqueness of magnesium aluminum carbon bricks is mainly reflected in the following aspects:

1. Excellent High-Temperature Resistance: Both magnesium oxide and aluminum oxide in magnesium-aluminum-carbon bricks have relatively high melting points, enabling them to withstand high-temperature environments. In the applications of high-temperature industrial fields such as steel, glass, and cement, they can be exposed to high temperatures for a long time without softening or melting, ensuring structural stability and service performance under high-temperature conditions.

2. Outstanding Erosion Resistance: On one hand, magnesium oxide and aluminum oxide can form a dense protective film to resist the erosion of high-temperature molten substances such as slag, molten steel, and molten glass. On the other hand, the presence of carbon can reduce the porosity of the brick body and increase its density, further enhancing its erosion resistance. This allows it to maintain good performance in harsh erosion environments and extend its service life.

3. Good Thermal Shock Stability: Magnesium-aluminum-carbon bricks have a relatively low coefficient of thermal expansion. In the case of a sharp change in temperature, the volume change of the brick body is small, and it is not easy to crack or spall due to thermal stress. At the same time, the high thermal conductivity of carbon helps to transfer heat quickly, making the temperature distribution of the brick body more uniform during the heating and cooling processes and reducing the generation of thermal stress. Thus, it has good thermal shock stability and can withstand frequent heating and cooling cycles.

4. High Mechanical Strength: Magnesium-aluminum-carbon bricks have high compressive strength and flexural strength, which can withstand the mechanical load at high temperatures. For example, during the steelmaking process, they can withstand the impact during the charging of converters and electric furnaces, as well as the static pressure when the ladle holds and transports molten steel, and are not prone to deformation or damage, ensuring the normal operation of the equipment.

5. Low Permeability and Anti-Penetration: The addition of carbon optimizes the pore structure of magnesium-aluminum-carbon bricks, reducing the porosity, so they have low air permeability and good anti-penetration properties. This can not only prevent the penetration of high-temperature gases and molten substances and reduce the erosion of the inside of the brick body, but also effectively avoid heat loss caused by gas penetration and improve the thermal efficiency of the equipment.