The main raw materials of magnesia-chrome bricks are sintered magnesia and chromite.
Magnesium oxide: 68-80%
Bulk density: 3-3.2g/cm3
Refractoriness: 1600-1700℃
Good slag resistance
Strong corrosion resistance
high temperature volume stability
Magnesia Chrome Brick
Description
Magnesia Chrome Brick is a refractory product with MgO and Cr2O3 as the main components, and periclase and spinel as the main mineral components.
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Characteristics
- Refractoriness greater than 2000°C.
- The load softening temperature is generally above 1550°C.
- Good resistance to rapid cold and rapid heat.
- Good volume stability at high temperature.
- Good thermal shock resistance.
Specifications
| Model | MGe6 | MGe8 | MGe12 | MGe16 |
|---|---|---|---|---|
| MgO (%) | 80 | 72 | 70 | 65 |
| Cr2O3 (%) | 7 | 10 | 13 | 17 |
| CaO (%) | 1.2 | 1.2 | 1.2 | 1.2 |
| SiO2 (%) | 3.4 | 4 | 4 | 4.2 |
| Al2O3 (%) | 4.5 | 6.5 | 6 | 6 |
| Fe2O3 (%) | 4 | 4.8 | 5.5 | 6.5 |
| Apparent Porosity (%) | 17 | 18 | 18 | 18 |
| Bulk Density (g/cm3) | 3 | 3 | 3.02 | 3.05 |
| Cold Crushing Strength Mpa | 55 | 55 | 55 | 50 |
| Refractoriness Under Load (°C) | 1600 | 1600 | 1600 | 1600 |
Application of magnesia chrome brick
Magnesia chrome brick is mainly used in cement rotary kiln, glass kiln regenerator, steelmaking furnace lining, permanent layer of refining ladle, nonferrous metallurgical furnace, lime kiln, mixed iron furnace and refractory material high temperature kiln lining, etc.
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