1.Large volume density,
2.High refractoriness under load,
3.Low creep rate,
4.Good resistance to erosion,hydration,chalking and stripping,
5.Relatively good thermal shock resistance,
6.Easy operation,convenient replacement and recycling usage.
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Item | High alumina | Low creep | Mullite | Corundum |
Size(mm) | 40-80 | 40-80 | 40-80 | 40-80 |
AL2O3(%) | 65 | 70 | 75 | 95 |
Refractoriness under load(°C) | 1450 | 1460 | 1530 | 1650 |
Apparent Porosity(%) | 25 | 23 | 22 | 18 |
Bulk Density(g/cm3) | 2.3 | 2.4 | 2.5 | 3.1 |
Cold crushing strength(Mpa) | 13 | 14 | 32 | 36 |
Thermal shock resistance (1100°Cwater cooling) cycle ≥ |
15 | 10 | 20 | 7 |
Refractoriness(°C) | 1710 | 1750 | 1800 | 1800 |
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