1. High temperature performance;
2. big bulk density;
3. high-strength,grinding, resisting alkali or sour.
Corundum refractories
Items | White corundum | Chrome-corundum | Brown corundum | ZR-corundum | ZR-mullite | YL-corundum | |
AL2O3% | 90-98 | 45-50 | 85-90 | 45-50 |
| 85-90 | |
Fe2O3% | 0.5 | 0.5 | 0.5-1.0 | 0.5~0.8 |
| 0.5-1.2 | |
ZrO2 % |
|
|
| 33~40 | ≥60 |
| |
AP % | 19~23 | 19~22 | 17~22 | 18~23 | ≤18 | 18-23 | |
RUL °C | 1500-1700 | 1600-1700 | 1500-1700 | 1600 | ≥1600 | 1550-1650 | |
CCS MPa | 80~85 | 80~85 | 60~65 | 70-75 | ≥85 | 60-65 | |
Refractoriness °C | 1790 | 1790 | 1790 | 1790 |
| 1790 | |
BD g/m3 |
|
|
| 3.0-3.4 | ≥3.4 |
| |
PLC % °C×h | ±3 1600×3 | ±3 1600×3 | ±3 1550×3 | 0.4 1600×3 |
| ±0.3 1550×3 | |
Properties | High temperature performance, big bulk density, high-strength,grinding, resisting alkali or sour. | ||||||
Usage | Widely used in furnace kilns of metallurgy, chemical engineering,elecstric and glass industry. | ||||||
