1.Good flexibility,
2.Thermal shock stability,
3.High volume stability,
4.High load softening temperature,
5.Excellent thermal shock,
6.High erosion resistance.
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Item | Magnesia-iron spinel brick | High toughness magnesia-iron spinel brick |
MgO% ≥ | 85 | 88 |
Fe2O3% | 5-7.5 | 5月6日 |
SiO2% ≤ | 2 | 1.5 |
Al2O3% ≤ | 3.0-5.0 | 4.0-7.0 |
apparent porosity% ≥ | 17 | 16 |
volume density g/cm3 ≥ | 3 | 2.9 |
cold compressive strength Mpa ≥ | 45 | 55 |
0.2MPa refractoriness under load, ℃ ≥ | 1600 | 1650 |
Thermal shock stability(1100℃~water cooling), times ≥ | 6 | 8 |
Thermal conductivity W/MK ≤ | 2.6 | 2.6 |
Thermal expansion % (1400℃) ≤ | 1.6 | 1.7 |
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