The Performance Advantages of Chrome Corundum Bricks Compared With Corundum Bricks

Corundum brick has been widely used in industrial furnaces under high temperature and high pressure environment. However, with the continuous updating and refinement of kiln technology, the requirements for corundum bricks are constantly improving. For this reason, a new generation of chrome corundum Bricks are more resistant to high temperature and corrosion resistance and become the new favorite to meet the needs of industrial furnaces. In terms of the performance of the product, the comparison between chrome corundum brick and corundum brick is as follows:

 

1. Fire performance

Al2O3 and Cr2O3 can form a continuous solid solution without eutectic production. Therefore, the addition of Cr2O3 to the high-purity corundum material does not reduce the fire resistance of the material, but the fire resistance of the material is improved. The refractoriness of chrome bricks (>1790°C and load softening temperature (>1700°C) are superior to high purity corundum bricks.

2. Compressive strength

The normal temperature compressive strength of high-purity corundum bricks is generally 70-100 MPa, and the normal-temperature compressive strength of high-performance chrome corundum bricks is generally >150 MPa, and its strength is significantly higher than that of corundum bricks. This is because during the firing process, between the particles and the particles, between the particles and the fine powder, the Al2O3-Cr2O3 solid solution is formed between the fine powder and the fine powder, and the solid solution connects the particles and the fine powder like a bridge. Together, the strength of the material is greatly increased.

In summary, Sunrise Refractory Company concluded that the chemical corrosion and permeability of chrome corundum brick anti-gasifier slag are better than corundum brick, and the anti-structural flaking property is superior to corundum brick.