Under working conditions with drastic temperature fluctuations, refractory materials are prone to cracking and spalling due to thermal stress. With its unique micro-structure, magnesia alumina spinel bricks serve as high-quality basic refractory products for improving thermal shock stability.
1. Working Principle
• Uniform Expansion:
Its main crystal adopts cubic structure, which expands evenly in all directions and avoids local stress build-up.
• Proper Flexibility:
Low elastic modulus, can buffer temperature difference stress, and suppress crack formation.
• Structural Stability:
The combined effect of spinel structure and tiny air holes can stop cracks from spreading further.
2. Main Advantages
• Great ability to resist sudden temperature changes, much better than ordinary magnesium refractory bricks.
• High temperature strength, good impact resistance and stable volume.
• Resistant to alkaline slag erosion, not easy to peel off or turn into powder.
3. Application Scope
• Metallurgy: Key inner lining for steel ladles, refining furnaces and tundishes.
• Building Materials: Transition zone and firing zone of cement rotary kilns.
• Non-ferrous Industry: Furnace wall and furnace top of copper and aluminum melting furnaces, reverberatory furnaces.
These bricks greatly extend kiln service life and lower maintenance costs, perfect for high-temperature variable working conditions. Huaxiang Refractories provides high-quality magnesia-alumina spinel bricks with mature technology and stable quality. Custom sizes are supported. Welcome customers for inquiry and purchase.
