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Refractory brick,Refractoy material,Refractory
Characteristics:
1. High refractoriness.
2. Good spalling resistance and wear resistance.
3. Good corrosion resistance.
4. Good thermal shock resistance.
5. High mechanical strength.
6. High-temperature creep rate is low.
7. Good volume stability at high temperature.
Physical and chemical index:
Item/Grade | Index | ||||
SK-32 | SK-34 | SK-36 | SK-37 | SK-38 | |
AL2O3 % (≥) | 35 | 38 | 55 | 65 | 70 |
Fe2O3 % (≤) | 2.5 | 2.5 | 2.0 | 2.0 | 2.0 |
Refractoriness(SK) | 32 | 34 | 36 | 37 | 38 |
Refractoriness under load, 0.2MPa, °C(≥) | 1300 | 1360 | 1450 | 1480 | 1530 |
Apparent porosity (%) | 20-24 | 20-22 | 20-23 | 20-23 | 20-22 |
Bulk density (g/cm³) | 1.95-2.1 | 2.1-2.2 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 |
Cold crushing strength ,MPa (≥) | 25 | 30 | 45 | 50 | 60 |
Thermal expansion at 1000°C (%) | 0.6 | 0.6 | 0.3 | 0.3 | 0.2 |
Application:
Refractory brick is widely used in metallurgy, petroleum, chemical industry, building materials, machinery processing, military, etc of thermal technology equipment.