Flint clay brick,kaolin brick,flint clay refractory brick
Characteristics:
1. High refractoriness,High-temperature endurable .
2. Good corrosion resistance.
3. Good spalling resistance and wear 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 | Fire clay brick | High alumina brick |
SK-30 | SK-32 | SK-34 | SK-36 | SK-38 |
AL2O3 % (≥) | 30 | 35 | 38 | 55 | 70 |
Fe2O3 % (≤) | 2.5 | 2.5 | 2.0 | 2.0 | 2.0 |
Refractoriness(SK) | 30 | 32 | 34 | 36 | 38 |
Refractoriness under load, 0.2MPa, °C (≥) | 1250 | 1300 | 1370 | 1450 | 1530 |
Apparent porosity (%) | 22-26 | 20-24 | 20-22 | 20-23 | 20-22 |
Bulk density (g/cm³) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.25-2.4 | 2.4-2.6 |
Cold crushing strength ,MPa (≥) | 20 | 25 | 30 | 45 | 60 |
Application:
Fire clay brick is widely used in metallurgy, petroleum, chemical industry, building materials, machinery processing, military, etc of thermal technology equipment.