Aluminum bricks are the core refractory material for steelmaking annealing furnaces. The furnace temperature is consistently between 800-1250 degrees Celsius, with frequent temperature fluctuations. This requires the refractory lining to possess excellent thermal stability and corrosion resistance. Aluminum bricks are the most cost-effective option for annealing furnaces, both in terms of quality and price.
alumina brick
Advantages of using aluminum bricks:
Compared to ordinary clay bricks, aluminum bricks reduce the frequency of furnace shutdowns for maintenance and lower operating costs.
Superior high-temperature resistance and thermal stability. Aluminum bricks are made from bauxite and can withstand long-term operating conditions of 800-1250 degrees Celsius.
Excellent thermal shock resistance effectively resists the stress generated by frequent furnace temperature fluctuations. They are less prone to cracking and detachment.
Good chemical stability. They do not readily undergo chemical reactions at high temperatures, preventing carburization and contamination of the steel, thus ensuring steel quality.
Annealing Furnace
Differentiated requirements for different parts of the furnace:
Furnace walls and roof: Aluminum bricks with 65% aluminum content are used, offering high cost-effectiveness and wide applicability.
The trolley working surface and burner: use 75% alumina bricks. These offer strong wear resistance and high-temperature resistance.
Low-temperature backing: uses lightweight, high-alumina insulating bricks, providing both insulation and energy-saving effects.
If you have any refractory material needs, please contact us. Henan Ruitai Lianxin Refractory Materials Co., Ltd. will provide you with professional refractory material solutions and optimized designs.
