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Product introduction of magnesia chrome bricks
Magnesia chrome brick is composed of magnesium oxide (MgO) and chromium oxide (Cr2O3). Magnesia chrome brick is made of magnesium chromium spinel and magnesia chrome spinel in the main phase, and is fired in an oxidizing atmosphere at 1600 to 1800 ℃. No chemical bonding agent such as water glass. Magnesia chrome brick is highly resistant to alkaline slag, is excellent in thermal stability, and has resistance to acid slag.
Features of magnesia chrome bricks
This brick has high fire resistance, high temperature strength, strong resistance to alkaline slag, excellent thermal stability, and adaptability to acid slag.
Application of magnesia chrome bricks
The production process of magnesia chrome bricks is simple, and the price is low, and the same rotary kiln (the number of quality of Cr2O3 is not exceeding 14%), the heat storage room of the glass kiln, the steel furnace lining, the permanent permanent layer of smelting steel, the colored metallurgical furnace, the lime kiln, the mixed iron furnace, and the lining in the refractory high temperature kiln.
Parameters of magnesia chrome bricks
| 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 |