- 17
- Sep
Low creep composite brick for hot air pipe
Low creep composite brick for hot air pipe
All types of refractory materials, customized kiln plan with drawings
Product advantages: large heat storage capacity, low creep rate and other advantages.
Product application: suitable for supporting hot blast furnaces and blast furnaces for medium and small blast furnaces.
product description
Low-creep composite bricks for hot air ducts are made of bauxite clinker as the main raw material, supplemented by special additives, formed by high pressure, and fired at high temperature. It has the advantages of large heat storage capacity and low creep rate.
Physical and chemical indicators
| project | DRL-135 | DRL-145 | DRL-150 | DRL-165 | DRL-155 | DRL-48 |
| Al2O3,% ≥ | 70 | 75 | 80 | 65 | 55 | 48 |
| Refractoriness ℃ ≥ | 1790 | 1790 | 1790 | 1790 | 1770 | 1750 |
| Apparent porosity% ≤ | 20 | 20 | 19 | 24 | 24 | 24 |
| Compressive strength at room temperature MPa ≥ | 65 | 70 | 80 | 49 | 44.1 | 39.2 |
| Change rate of reheating wire% ≥ | ±0.1 | ±0.1 | ±0.1 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 |
| 1450℃*2h | 1500℃*x2h | 1450℃*2h | ||||
| Load softening temperature (0.2Mpa) ℃ ≥ | 1500 | 1550 | 1650 | 1500 | 1470 | 1420 |
| Creep rate% ≤ | 0.6 1350℃×50h |
0.6 | 0.7 | – | – | – |
| 1450℃×50h | 1500℃×50h | – | – | – | ||