Light Weight High Alumina Brick

What is Light Weight High Alumina Brick

Light weight high alumina brick is also called high alumina insulating brick. It contains more than 48% Ai2O3 and mainly consists of mullite and glass phase or corundum. It is usually made of high bauxite and a small amount of clay. After the raw materials are grounded, it is made into mud. Then it is cast and molded and fired at 1300～1500℃. Sometimes industrial alumimum is used to replace bauxite. Inorganic matter is added as ignition loss substance in order to increase the porosity of the refractory.

Light Weight High Alumina Brick Process

Light weight high alumina bricks are made from high alumina bauxite and a small amount of clay, sometimes using industrial alumina to replace some bauxite clinker. After grinding into dust, we adopt gas evolution method or foam method to cast the material into form. At last the material would be sintered at 1300 to 1500℃.

Advantage of Light Weight High Alumina Brick

 Light weight high alumina brick have such advantages as high porosity, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. Thermal efficiency and working condition can be improved, energy consumption can be lowered, productivity and significant economic results can be achieved. It has high cold crushing strengh,size precision and holds the most stable and lowest thermal conductivity of all insulating refractory bricks at present. Its maximum service temperature is 1350℃.

Specifications of Light Weight High Alumina Brick

Light Weight High Alumina Brick Application

Light weight high alumina brick widely used in lining or insulating layers of various industrial furnaces, and kilns in petrochemical, machinery, ceramic industry, such as lining and insulating layer of high temperature kilns, carbon black stove, gasifier, hydrogen manufacturing furnace and shuttle kiln,etc.