采用优质氧化铝原料，精选优质粘土，添加多种改性添加剂，经半干法或挤压成型工艺生产而成的高档高铝轻质砖，可用于乙烯裂解炉炉墙及各种工业窑炉直接接触火焰的部位，具有重烧线变化小，导热系数低、热稳定性好等优点。
High grade high-alumina heat insulation refractory
High grade high-alumina heat insulation refractory brick whose raw material is exxcllent high –alumina ,high qualified clay and various modified addition agent is produced by means og semi-dry method and pressing formation ,which has comparatively low reheating linear change ,comparatively low thermal conductivity and excellent heat stability .This product can be used as furnace wall of ethylene craceing furnace and touch fire directly in various industrial kilns &furmaces .
| 项目 | 性能指标 |
| HQ-0.5 | HQ-0.6 | HQ-0.7 | HQ-0.8 | HQ-0.9 | HQ-1.0 |
| Al2O3含量%不小于 | 40 | 45 | 48 | 60 | 65 | 70 |
| Fe2O3含量%不大于 | 1.0 | 1.0 | 1.0 | 0.8 | 0.8 | 0.9 |
| 体积密度g/cm3 | 0.5±0.05 | 0.6±0.05 | 0.7±0.05 | 0.8±0.05 | 0.9±0.05 | 1.0±0.05 |
| 常温耐压强度Mpa 不小于 | 1.2 | 1.5 | 1.6 | 2.0 | 2.5 | 3.0 |
| 常温抗折强度Mpa 不小于 | 0.8 | 1.0 | 1.1 | 1.5 | 2.0 | 2.4 |
| 重烧线编号不大于0.5%的试验温度℃ | 1260 | 1300 | 1400 | 1450 | 1510 | 1550 |
| 热震稳定性(1000℃空冷)次不小于 | 20 | 20 | 20 | 20 | 20 | 20 |
导热系数 W/m.k
不大于 | 260℃ | 0.14 | 0.15 | 0.17 | 0.25 | 0.28 | 0.38 |
| 400℃ | 0.16 | 0.17 | 0.20 | 0.27 | 0.32 | 0.41 |
| 600℃ | 0.18 | 0.19 | 0.22 | 0.30 | 0.35 | 0.43 |
| 800℃ | 0.20 | 0.21 | 0.25 | 0.33 | 0.37 | 0.46 |
乙烯裂解炉用轻质耐火砖配套胶泥
| 牌号 | 使用温度℃ | 升温干燥时间 | 所用材质 | 粘结抗折强度Mpa | 备注 |
| 110℃ | 1300℃ |
| PAQ-65 | 1550 | 300℃小时 | 高铝质 | ≥1.0 | ≥4.0 | 适用于HQ-0.9轻质砖 |
| PAQ-55 | 1400 | 300℃小时 | 高铝质 | ≥1.5 | ≥4.0 | 适用于HQ-0.8轻质砖 |
| PAQ-40 | 1250 | 300℃小时 | 粘土质 | ≥1.0 | ≥3.0 | 适用于HQ-0.5轻质砖 |
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