Mullite Insulation Brick Introduction
Mullite insulation brick refers to a high alumina refractory material with mullite as the main crystalline phase. Mullite insulation bricks have a high fire resistance, reaching over 1790 ℃. Mullite lightweight bricks have low thermal conductivity and excellent thermal insulation effect.
Mullite Insulation Brick Characteristic
Mullite insulation bricks, also known as Mullite lightweight bricks, can be used as lining to reduce the volume of kiln lining masonry, reduce overall weight, shorten heating time, and ensure uniform furnace temperature. Mullite lightweight bricks can reduce heat loss, save energy, improve furnace lining conditions, and extend the service life of the kiln.
Mullite Insulation Brick Specification
The raw material of mullite lightweight bricks is high-purity mullite, which is sintered and formed. Its color is pure white, the use temperature is high, and the rate of change in the re firing line is low. The alumina content of mullite lightweight bricks ranges from 65% to 75%. Its matrix composition includes not only mullite, but also a small amount of glass phase and cristobalite; Those with higher alumina content also have a small amount of corundum added to their matrix. This type of brick is called corundum mullite insulation brick, which has better insulation effect and higher compressive strength.
Mullite Insulation Brick Application
Mullite lightweight bricks are one of the high-end insulation materials used in the top, body, and bottom of hot blast furnaces, as well as in the upper structure of glass furnaces, as well as in the material channels and modification plates. They are also used as insulation layers for the lining of kilns, smelting furnaces, heating devices, and other furnaces.
