High alumina brick is a kind of neutral
refractory with alumina content above 48%. It is
formed by shaping and calcining bauxite or other
raw materials with high alumina content. High
thermal stability and fire resistance above 1770
℃. The production process of high alumina bricks
is similar to that of multi clinker clay bricks.
The difference is that the proportion of clinker
in the ingredients is high, up to 90~95%. Before
crushing, the clinker needs to be sorted and
screened to remove iron. The firing temperature
is high. For example, when high alumina bricks
such as I and II are fired in tunnel kilns, it is
generally 1500~1600
℃.
Feature of high alumina
bricks 1. Good thermal conductivity.
2. High fire resistance. 3. Good slag resistance,
acid and alkali resistance. 4. Thermal
stability.
Appliaction Of
High Alumina Refractory Bricks
As a basic material in the
field of high-temperature technology, high
alumina bricks are widely used in cement, glass
building materials, steel smelting,
petrochemical and other industries. High
temperature industrial furnaces for high
alumina bricks include blast furnace, hot blast
furnace, electric furnace, blast furnace,
reverberatory furnace and rotary kiln lining.
In addition, high alumina bricks can also be
processed into open hearth regenerative grid
bricks, socket bricks for pouring system,
nozzle bricks, etc. according to the
requirements of industrial
furnaces.