Fireclay refractories, namely alumina content in more than 48% of a kind of aluminum silicate refractory material.It is formed and calcined from alumina or other raw materials with high alumina content.High - alumina brick is generally made of high - quality bauxite clinker, combined with clay and additives.The fire resistance is above 1750℃.There are also crushing - mixing - molding - drying - sintering - inspection - packaging and other technological processes.Several common types of kiln bricks are High alumina brick, fireclay brick, magnesite bricks, dolomite bricks, magnesia carbon bricks, corundum brick,light-weight brick.
Firebrick colors from yellow, to grey, to traditional reds and oranges, bricks are ubiquitous in many of our cities and refractory bricks are used for architecture.But if installed near a hot source of heat, ordinary bricks will eventually crack, and firebricks are more suitable.Material that burns ordinary bricks in ovens above 1000°C cannot withstand high temperatures, in fact, the main problem is thermal shock.When an ordinary brick comes into contact with a heat source, it expands rapidly.When the source stops (e.g., fire goes out), the material shrinks.These sudden changes in temperature can affect the stability of the structure and can cause serious problems such as cracks.Refractories are materials that can withstand high temperatures without damaging their structure, electrical resistance or thermal conductivity.In the case of bricks, the chemical composition of refractories is different from that of ordinary bricks, which also affects the colour and thermal conductivity of the brick.
For domestic uses, such as ovens, grills and fireplaces, the firebricks used are usually made of clay and mainly contain alumina and silica, which can withstand high temperatures.Alumina is reflective, while silica is a good insulator.The higher the alumina content in the mixture, the higher the temperature the brick will withstand (a basic consideration for industrial use), and the more expensive the brick will be.Silica has a lighter hue, while alumina has a more yellow appearance.
In addition to technical functions, there are also architects who use firebricks to build and decorate courtyard gardens, and sometimes as a background, these bricks can be seen throughout the house.Contact with firebrick for so long, a long time instead of like this material, office flowers and plants we are also readily used with refractory materials, ceramsite, aggregate, vermiculite these can be used for decoration.
In addition to the bricks themselves, the mortar used must also withstand high temperatures.Therefore, it is usually composed of special aggregates such as vermiculite and refractory clay.Like bricks, it also contains alumina (Al2O3), mullite - zirconia and other materials.Foshan Huanya New Materials Co., Ltd is a professional fire brick manufacturers，has 20+ years of professional experience in producing refractory materials.We produce aluminate bricks,clay bricks,refractory castable and insulating materials.
