$Refractory Bricks$

The application of high alumina brick

Jun 28,2017
Alumina content of more than 48% of a neutral refractory. Made of bauxite or other high alumina content of raw materials formed by molding and calcination. High thermal stability, refractoriness above 1770 ℃. Good slag resistance. Used for masonry steelmaking furnace, glass melting furnace, cement rotary kiln and other lining.
High creep soft low-creep high alumina brick is a special bauxite. Fused corundum, fused mullite as the main raw material made of high-grade refractory. The product has high temperature creep small. Strong resistance to erosion. Thermal shock stability and other advantages, suitable for large and medium hot air stove.
A, refractoriness
High alumina brick refractoriness than clay brick and semi-silica brick refractorance should be high, up to 1750 ~ 1790 ℃, are high refractories.
B, load softening temperature
Because high-alumina products in the high Al2O3, less impurities, the formation of fusible glass less, so the load softening temperature than the clay brick, but the mullite crystallization does not form a network of organizations, so the load softening temperature is still no silicone bricks.
C, slag resistance
High alumina brick Al2O3, close to the neutral refractory material, can resist the acid slag and alkaline slag erosion, because it contains SiO2, so the ability of alkali-resistant slag than the ability of acid-resistant slag weak.
The use of high alumina bricks

Mainly used for masonry blast furnace, hot stove, electric furnace top, blast furnace, reverberatory furnace, rotary kiln lining. In addition, high alumina bricks are also widely used to do flat furnace regenerative lattice brick, pouring system with the plug head, water tank and so on. But the price of high alumina brick than clay brick, so clay bricks can meet the requirements of the place do not have to use high alumina brick.