High-alumina bricks are divided into first-grade high-alumina bricks, second-grade high-alumina bricks and third-grade high-alumina bricks. The content of high alumina bricks is not less than 75, and the aluminum content of super high alumina bricks is above 85.

As for the shape of high-alumina bricks, in addition to standard high-alumina bricks, there are also general-purpose high-alumina bricks, also called special-shaped high-alumina bricks. If the shape is very irregular, they are usually called special high-alumina bricks.

1. Wear resistance:

2. Thermal conductivity: Under the condition of unit temperature gradient, the heat flow rate per unit area of the material is related to the porosity

3. Impact resistance: no need to explain, good impact resistance and long service life

4. Slag resistance: the ability to resist the erosion of slag at high temperature without being damaged