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Product description of magnesia chrome brick
Ordinary magnesia chrome bricks are generally produced with sintered magnesia (MgO content is 89%~92%) and refractory grade chrome ore as raw materials. Due to many impurities, the refractory grains are combined with silicate. Generally speaking, the magnesia chrome brick refers to the magnesia chrome brick fired with light burned magnesia and imported chrome ore. It is also called ordinary sintered magnesia chrome brick, or simply magnesia chrome brick.
Features of magnesia chrome brick
Ordinary magnesia chrome bricks are made of sintered magnesia and chrome magnesia ore. These bricks are characterized by high refractoriness, high temperature strength, strong resistance to alkaline slag corrosion, good thermal stability, certain adaptability to acid slag, high load softening temperature, good high-temperature volume stability, etc.
More relevant refractory products: Ceramic fiber cloth
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 |
Application of magnesia chrome brick
Magnesia chrome bricks are mainly used in metallurgical industry, lining of steelmaking furnace, permanent layer of refining ladle, non-ferrous metallurgical furnace, lime kiln, mixer furnace and lining of refractory high-temperature kiln.
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