Bubble Alumina bricks are ultra-high temperature energy-saving insulation materials made of hollow balls of alumina and alumina powder as the main raw materials, combined with a bonding agent at high temperature of 1750℃. They are one of ultra-high temperature materials and energy-saving insulation materials. This product has the characteristics of high temperature resistance and low bulk density, and its mechanical strength is several times that of ordinary lightweight products.

This material is widely used in the lining of high-temperature equipment such as gasification furnaces, metallurgical induction furnaces, ceramic furnaces, etc., and saves energy by reducing the furnace weight by more than 30%. The product has a low change rate of refiring lines, which can replace traditional heavy-quality refractory bricks and reduce the amount of insulation materials. Thermal insulation also plays a role in scenarios such as refractory concrete aggregates, high-temperature castables, and cemented carbide medium-frequency furnaces.