Bubble alumina bricks are an innovative type of high-temperature insulation material, created by melting and blowing industrial alumina in an electric furnace. Composed primarily of alumina bubbles, these bricks can be fashioned into various shapes and have a maximum operating temperature of 1800℃.
These products boast a high mechanical strength, several times greater than that of standard lightweight materials, while maintaining only half the bulk density of corundum-based materials.
Extensively utilized in industries such as petrochemicals, carbon black, and metallurgy, bubble alumina bricks are employed in gasification furnaces, reaction furnaces, induction furnaces, and other high-temperature or ultra-high-temperature kilns. They have demonstrated significant energy-saving benefits in these applications.