| Item 项目 | Andalusite brick 红柱石砖 | ||||||
| RH-155 | RH-150 | RH-145 | RH-140 | RH-135 | RH-130 | ||
| Al2O3(%) | ≥ | 69 | 65 | 61 | 57 | 53 | 49 |
| Fe2O3 (%) | ≤ | 1 | 1 | 1.2 | 1.2 | 1.5 | 1.5 |
| TiO2 (%) | ≤ | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 |
| Apparent Porosity 显气孔率(%) | ≤ | 20(22) | 20(22) | 20(22) | 20(22) | 20(22) | 20(22) |
| Bulk Density 体积密度(g/cm3) | ≥ | 2.55~2.70 (2.50~2.65) | 2.50~2.65 (2.45~2.60) | 2.45~2.60 (2.40~2.55) | 2.40~2.55 (2.35~2.50) | 2.35~2.50 (2.30~2.45) | 2.30~2.45 (2.25~2.40) |
| Cold Crushing Strength 常温耐压强度(Mpa) | ≥ | 55(50) | 55(50) | 50(45) | 50(45) | 40(35) | 40(35) |
| Refractoriness under Load 荷重软化开始温度(℃) (0.2Mpa) | ≥ | 1700 | 1700 | 1650 | 1600 | 1520 | 1450 |