项目 Project | 氧化铝空心球砖 Alumina bubble brick | ||
GD-85 | GD-90 | GD-99 | |
**使用温度℃ The highest use temperature c | 1680 | 1750 | 1800 |
Al2O3% | ≥85 | ≥90 | ≥99 |
SiO2 % | ≤13 | ≤8 | ≤0.2 |
Fe2O3% | ≤0.2 | ≤0.2 | ≤0.2 |
体积密度（g/m³） The volume density (g/m fand) | 1.4—1.7 | 1.4—1.7 | 1.4—1.7 |
常温耐压强度Mpa The compressive strength of Mpa at room temperature | ≥12 | ≥ 10 | ≥9 |
荷重软化开始温℃（0.1MPa,0.6%) Load softening temperature (0.1MPa DEG C began, 0.6%) |
≥1650 |
≥1700 |
≥1700 |
重烧线变化率% (1600℃X3h)Reheating linear change rate (1600 degrees X3h) |
±0.3 |
±0.3 |
±0.3 |
热膨胀系数10-6（室温—1300℃） The thermal expansion coefficient of X10-6 (room temperature and 1300 C) |
~7.8 |
~8.0 |
~8.6 |
导热系数（W/m.k）（平均温度800℃） The coefficient of thermal conductivity (W/m.k) (the average temperature of 800 DEG C) |
≤0.8
|
≤1.3 |
≤1.5 |
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