High-Alumina Wear-Resistant Refractory Castable
Al2O3: ≥65-78%;
Refractoriness: ≥1700-1780ºC;
Bulk Density: 2.15-2.65g/cm³;
Cold Modulus of Rupture: ≥4.0-7.0MPa;
Cold Crushing Strength: 25-40MPa;
Physical Parameters of High Aluminum Refractory Castables
| Item | G-15B | G-15 | G-16 | |
|---|---|---|---|---|
| Maximum service temperature，℃ | 1400 | 1500 | 1600 | |
| Al2O3 ，% | ≥65 | ≥75 | ≥78 | |
| SiO₂，% | 25 | 20 | 15 | |
| B.D After Drying at 110℃，g/cm³ | 2.5 | 2.6 | 2.65 | |
| Cold Bending Strength，Mpa | 110℃*24h | 8 | 8 | 10 |
| 1100℃*3h | 8 | 8 | 10 | |
| Cold Compressive Strength，Mpa | 110℃*24h | 70 | 80 | 100 |
| 1100℃*3h | 70 | 80 | 100 | |
| Linear Change Rate After Burning PLC，% | 1100℃*3h | ±0.3 | ±0.3 | ±0.3 |
| Construction Reference Water Consumption，% | 6-7 | 6-7 | 5.5-6.5 | |
High-alumina wear-resistant cement castables are widely used in:
- Iron/steel industry (blast furnace hoppers, rolling mill chutes) to resist ore/coke abrasion;
- Cement plants (kiln preheaters, clinker coolers) against clinker wear;
- Mining/coal facilities (ore bins, coal mills) for ore/coal particle resistance;
- Power plants (ash chutes) and chemical reactors (solid-material linings) to withstand abrasive media.