Bubble alumina brick

Bubble alumina can be used to make Bubble alumina brick

Alumina hollow ball bricks are made of hollow alumina balls as the main raw material, adding ultra-fine powder and other process ingredients to dry and form. The alumina raw materials are added to the dumping electric furnace to melt into a liquid state, and the furnace is poured at a certain angle to make the solution poured from The trough flows out, and then the hollow alumina spheres, sintered alumina fine powder and binder are mixed in a certain proportion, formed and fired in a shuttle kiln at a high temperature of 1750°C. It is a high-grade lightweight refractory material. The hollow ball brick is light in weight, high temperature resistant, small in line change, and particularly good in thermal shock resistance. It can be used as an insulation layer or directly used in the working layer.

Advantages of Bubble alumina brick

Bubble alumina have good thermal insulation performance, reduce heat dissipation and improve thermal efficiency, and the energy-saving effect is up to 30%. Therefore, some high temperature kiln lining high temperature zone or shuttle kiln lining all use hollow ball bricks, which is light in weight and has a significant effect. Alumina hollow ball bricks have high aluminum content, low iron content and low bulk density. They are used in the working layer of shuttle kilns and tunnel kilns in high temperature areas, and can also be used as insulation layers in high temperature areas.