Sunrise Zirconium Corundum Brick Hot Sale all Over the World
Date:2019-05-24 17:16 From:Zhengzhou Sunrise Refractory Author:admin
Sunrise Zirconium corundum brick is a refractory brick made of industrial alumina and zircon sand. According to the manufacturing process, zirconium corundum bricks can be divided into two types: fused zirconium corundum bricks and sintered zirconium corundum bricks.
Electrofused zirconium corundum bricks are commonly known as white iron bricks, also known as corundum-oblique zircon bricks. The main chemical composition is Al2O3 50%~70%, ZrO2 20%~40%, and the rest is SiO2. The main mineral composition is oblique zircon (ZrO2), corundum (α-Al2O3) and glass phase. The oblique zircon crystal forms the backbone of the brick. The high melting point of ZrO2 (2715 °C) is good, and it has strong corrosion resistance to acidic and alkaline media, especially glass.
The advantages of Chrome Corundum Brick:
1. The refractory properties of chrome corundum brick.
In high purity corundum material add Cr2O3, no matter how much the amount, not only will not reduce the fire performance of materials，can make refractory performance of material improved.
2. The strength of chrome corundum brick.
Compressive strength of high purity corundum brick at room temperature is 70 ~ 100 MPa commonly, room temperature compressive strength of high performance chromium corundum brick is generally larger 150 MPa, the intensity is significantly higher than the corundum brick. This is because the products in the process of burning, between particles and fine powder, between powder and powder are formed Al2O3 - Cr2O3 solid solution, calcium solid solution like bridge connect fine powder with particles together, make the strength of the material is greatly increased.
3. Thermal shock resistance.
Add Cr2O3 in corundum, when Cr2O3 content is 10% ~ 66%, material of thermal shock resistance decreased with increasing content of Cr2O3, namely the Cr2O3 content low chrome corundum brick, the thermal shock stability is better than Cr2O3 content high chrome corundum brick.
4. Application.
For use in the iron and steel industry, chrome corundum brick material is above double longer than service life extended of corundum material, such as ladle air brick, etc. For use in nonferrous smelting industry, the wear resistance and erosion resistance of chrome corundum brick is superior to other bricks.
Electrofused zirconium corundum bricks are commonly known as white iron bricks, also known as corundum-oblique zircon bricks. The main chemical composition is Al2O3 50%~70%, ZrO2 20%~40%, and the rest is SiO2. The main mineral composition is oblique zircon (ZrO2), corundum (α-Al2O3) and glass phase. The oblique zircon crystal forms the backbone of the brick. The high melting point of ZrO2 (2715 °C) is good, and it has strong corrosion resistance to acidic and alkaline media, especially glass.
1. The refractory properties of chrome corundum brick.
In high purity corundum material add Cr2O3, no matter how much the amount, not only will not reduce the fire performance of materials，can make refractory performance of material improved.
2. The strength of chrome corundum brick.
Compressive strength of high purity corundum brick at room temperature is 70 ~ 100 MPa commonly, room temperature compressive strength of high performance chromium corundum brick is generally larger 150 MPa, the intensity is significantly higher than the corundum brick. This is because the products in the process of burning, between particles and fine powder, between powder and powder are formed Al2O3 - Cr2O3 solid solution, calcium solid solution like bridge connect fine powder with particles together, make the strength of the material is greatly increased.
3. Thermal shock resistance.
Add Cr2O3 in corundum, when Cr2O3 content is 10% ~ 66%, material of thermal shock resistance decreased with increasing content of Cr2O3, namely the Cr2O3 content low chrome corundum brick, the thermal shock stability is better than Cr2O3 content high chrome corundum brick.
4. Application.
For use in the iron and steel industry, chrome corundum brick material is above double longer than service life extended of corundum material, such as ladle air brick, etc. For use in nonferrous smelting industry, the wear resistance and erosion resistance of chrome corundum brick is superior to other bricks.