High Alumina Insulating Brick

High Alumina Insulating Brick – What Is It?

• High alumina insulating brick are manufactured using bauxite, which is a naturally occurring substance that comprises aluminum hydroxide (Al[OH]3) and kaolinitic clays.
• Raw materials undergo roasting, resulting in a blend of synthetic alumina and mullite, which is an aluminosilicate mineral with the chemical formula 3Al2O3 · 2SiO2.
• High alumina refractories are characterized by the presence of alumina ranging from 50 to 87.5 percent, according to the definition.
• At high temperatures and in basic environments, they exhibit greater endurance than fireclay refractories.
• Furthermore, they demonstrate improved volume stability and resistance to abrasion.
• High-alumina bricks find application in blast furnaces, blast-furnace stoves, and liquid-steel ladles.

The Applications Of High Alumina Insulating Bricks

Light weight insulating bricks High alumina insulating bricks find various significant applications as listed below:

• Used for lining muffle furnaces and crucible furnaces
• Foundries extensively use them for lining furnaces and kilns
• These are employed for the lining of EAFs, IFBs, blast furnaces, and other similar applications
• Their high strength and hardness make them appropriate for applications such as rocket engine nozzles and missile nose cones
• They can be used in ceramic kilns, furnaces for manufacturing pyrometric cones, among others
• Glass melting furnaces and annealing lehrs utilize them