Mullite poly light insulation brick introduce

Mullite poly light brick is called mullite lightweight insulation brick and mullite heat-insulating refractory brick. The scattered mullite poly light brick can reduce the volume of the masonry in the kiln, reduce the overall weight, shorten the heating time, make the furnace temperature uniform, reduce heat loss, and save energy. Mullite poly-light brick can also improve the furnace lining conditions and extend the service life of the kiln.

Introduction to mullite poly light brick

Mullite-type light brick has low thermal conductivity, good thermal insulation effect, and temperature resistance above 1500℃. The raw material of mullite poly light brick is high-purity mullite, which is fired and formed in white color, has high use temperature, and low re-fired line change rate. The alumina content of mullite polylight is between 65% e 75%. In addition to mullite, the matrix composition also contains a small amount of glass phase and quartz; those with higher alumina content also have a small amount of corundum in the matrix. This is called corundum mullite insulation brick, which has a good insulation effect and high compressive strength.

Application of mullite poly light brick

Mullite poly light brick is widely used in the top of hot blast furnaces, blast furnace bodies, and bottom, material channel and a plate of glass kiln upper structure, sintering kiln, smelting kiln, heating device, and another kiln lining insulation layer.

Because mullite has excellent high-temperature mechanical properties and chemical stability, therefore, mullite poly light brick has excellent properties such as high high-temperature structural strength, low high-temperature creep rate, small thermal expansion coefficient, strong chemical corrosion resistance, boa resistência ao choque térmico, etc. It can effectively reduce the weight of the furnace body and save energy.