Application of Magnesium Aluminum Carbon Brick on Ladle

November 19, 2018

Application of Magnesium Aluminum Carbon Brick on Ladle

The difference between magnesium aluminum carbon bricks and aluminum magnesium carbon bricks is that the content of Al2O3 and MgO is reversed, and the production process of brick making is the same. Magnesium aluminum carbon brick has good slag resistance and strong corrosion resistance. The performance of magnesium aluminum carbon brick is between the magnesia carbon brick and the aluminum magnesium carbon brick. It can be used in the transition zone between the ladle slag line and the wall of the package, and can also be used for the wall of the ladle.

When Al2O3-MgO-C bricks are used, the main components of the bricks near the surface of the bricks, Al2O3 and MgO, react to form magnesium aluminum spinel and have a certain volume expansion. The slag resistance and expansion of the aluminum magnesium carbon bricks increase with the increase of the MgO content, but if the MgO content is too large, the expansion of the bricks will become large, which will cause cracking of the products and damage of the bricks.

The spinel in the magnesium aluminum carbon brick can improve the corrosion resistance of the material, the carbon content is continuously increased, the elastic modulus of the material is reduced, and the expansion after burning is reduced, which is beneficial to improve the thermal shock resistance and slag penetration resistance of the material. Sex. Since the carbon in the magnesium aluminum carbon brick is easily oxidized, the bulk density and strength of the brick are lowered, so a suitable carbon content is 7% - 9%.