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Product introduction of Magnesia chrome brick
Magnesia chrome bricks are refractory products with magnesium oxide (MgO) and chromium trioxide (Cr2O3) as the main components and periclase and spinel as the main mineral components.
Features of Magnesia chrome brick
This kind of brick has high refractoriness, high temperature strength, strong resistance to alkaline slag corrosion, excellent thermal stability and certain adaptability to acid slag.
Application of Magnesia chrome brick
Magnesia chrome bricks are mainly used in metallurgical industry, such as building open hearth furnace roof, electric furnace roof, external refining furnace and various nonferrous metal smelting furnaces. The high temperature part of the ultra-high power electric furnace wall is made of fused cast magnesia chrome bricks, the high erosion area of the external refining furnace is made of synthetic materials, and the high erosion area of the nonferrous metal flash smelting furnace is made of fused cast magnesia chrome bricks and synthetic materials. In addition, magnesia chrome bricks are also used in the sintering zone of cement rotary kilns and the regenerator of glass kilns.
More relevant refractory products: Magnesia chrome bricks
Parameters of Magnesia chrome brick
| Model | MGe6 | MGe8 | MGe12 | MGe16 | DMGe4 | DMGe8 | DMGe12 | DMGe16 |
| MgO % | 80 | 72 | 70 | 65 | 85 | 77 | 74 | 69 |
| Cr2O3 % | 7 | 10 | 13 | 17 | 5.5 | 9.1 | 14 | 18 |
| CaO % | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.4 | 1.2 | 1.2 |
| SiO2 % | 3.4 | 4 | 4 | 4.2 | 1.3 | 1.2 | 1.2 | 1.5 |
| Al2O3 % | 4.5 | 6.5 | 6 | 6 | 3.5 | 4 | 3.5 | 4.5 |
| Fe2O3 % | 4 | 4.8 | 5.5 | 6.5 | 3 | 6.4 | 5 | 5.7 |
| Apparent Porosity % | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Bulk Density g/cm3 | 3 | 3 | 3.02 | 3.05 | 3.02 | 3.04 | 3.06 | 3.08 |
| Cold Crushing Strength Mpa | 55 | 55 | 55 | 50 | 50 | 50 | 55 | 55 |
| Refractoriness Under Load °C | 1600 | 1600 | 1600 | 1600 | 1700 | 1700 | 1700 | 1700 |
| Thermal expansion % 1000°C | / | / | / | / | 1 | 1 | 1 | 0.9 |
| Thermal expansion % 1600°C | / | / | / | / | 1.8 | 1.8 | 1.8 | 1.6 |
Tips:
MGe6/MGe8/MGe12/MGe16=Commom Magnesia Chrome Brick
DMGe6/DMGe8/DMGe12/DMGe16=Direct-Bonded Magnesia Chrome Brick