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Product introduction of magnesia hercynite brick
Magnesia hercynite brick is made of good synthetic spinel raw materials and special process. It is a new generation of basic refractory material with higher technical content. It is mainly used in the firing area of large dry-process cement kiln.
Feature of magnesia hercynite brick
- High compressive strength
- Good thermal shock stability
- Thermal creep can be good
- High load softening temperature
Model: B620 / B320, B622 / B322
Parameters of magnesia hercynite brick
| Type | KR-MFe-85A | KR -MFe-85B | KR -MFe-85C |
| MgO % | 85 | 85 | 85 |
| Al2O3 % | 3-5 | 3-5 | 3-5 |
| Fe2O3 % | 4-6 | 4-6 | 4-6 |
| SiO2 % | 1.5 | 1.8 | 2.0 |
| Bulk Density (g/cm3) > | 2.95 | 2.93 | 2.90 |
| Apparent Porosity(%) ≤ | 17 | 17 | 17 |
| Cold Crushing Strength (Mpa) > | 55 | 50 | 45 |
| Refractoriness Under Load (T6.0,9) > | 1600 | 1550 | 1500 |
| Thermal Shock Resistance (950℃-Air Cooling) (times) > | 100 | 90 | 90 |
| Thermal Conductivity (W/m.K) | 2.6 | 2.6 | 2.4 |
| Thermal Expansion (1400℃) % | 1.6 | 1.6 | 1.6 |
Application of magnesia hercynite brick
The high refractoriness and excellent thermal shock resistance of magnesia hercynite brick under load make it suitable for the key components of SP and NSP kilns with high kiln temperature, fast rotating speed, strong alkali corrosion ability and heavy mechanical load. It can effectively prolong the service life of furnace lining and maintain the low temperature of kiln barrel.