Product Introduction
Checker brick is a heat transfer medium used in hot blast stoves, glass kilns, etc. And high-alumina checker brick is a heat-carrying and heat-storing body with strong heat exchange capacity, large heat storage area, smooth ventilation, and small resistance. It has the advantages of good volume stability, excellent high-temperature creep performance, high density and low porosity.
Choose the type what you need, or provide the size you need.
Technical Data
| Item | Index | |||
| GZ | DRN120 | DRL127 | DRL145 | |
| Al2O3 % | ≤1.0 | ≥42 | ≥50 | ≥65 |
| SiO2 % | ≥95 | / | / | / |
| Fe2O3 % | ≤1.2 | ≤1.8 | / | / |
| Apparent Porosity % | ≤24 | ≤22 | ≤25 | ≤23 |
| Bulk Density g/cm3 | ≤2.34(True density) | 2.1~2.3 | 2.3~2.5 | 2.5~2.7 |
| Normal Temperature Compressive Strength MPa | ≥30 | ≥25 | ≥40 | ≥50 |
| 0.2MPaCreep Rate % 0~50h | ≤0.8 | ≤0.8 | ≤0.8 | ≤0.8 |
| 1500℃ | 1200℃ | 1270℃ | 1450℃ | |
| Thermal Expansion Rate % 1000℃ | ≤1.26 | / | / | / |
| Heating Permanent Line Change % | / | 1350℃×2h | 1450℃×2h | 1500℃×2h |
| -0.4~0.1 | -0.3~+0.2 | ±0.2 | ||
Application
1. Steel furnaces
2. Iron making furnaces
3. Glass kiln
4. Ceramic tunnel kiln
5. Cement kiln