Corundum mullite castable is made from high quality corundum and mullite with micro-powder and additive, widely used for outlet, burner lance, kiln hood and tertiary air duct and grate cooler of cement rotary kilns. The advantage of Corundum mullite castable is good thermal shock resistance, low creep rate, low expansion and good performance of chemical attack resistance.
| 项目Item | 刚玉/莫来石耐火浇注料 Corundum Mullite castable | |||||
| LX-18S | LX-80MC | LX-70MC | ||||
| 化学成分(%)≥Chemical composition | Al₂O₃+SiC | 90 | 80 | 70 | ||
| 体积密度(g/cm³)Bulk density | 110℃×24h | 3.00 | 2.90 | 2.75 | ||
| 耐压强度(MPa)Cold crushing strength | 110℃×24h | 110 | 100 | 90 | ||
| 1100℃×3h | 120 | 110 | 100 | |||
| 抗折强度(MPa)≥Cold modules of rupture | 110℃×24 | 15 | 12 | 10 | ||
| 1100℃×3h | 18 | 14 | 12 | |||
| Permanent linear change | 1100℃×3h | ±0.3 | ±0.3 | ±0.3 | ||
| 1500℃x3h | ±0.5 | ≠0 | ±05 | |||
| 最高使用温度(C)Maximum Service temp ≥ | 1700 | 1600 | 550 | |||
| 施工参考用水量(%) Water addition | 4.5-5.5 | 5.0-5.5 | 5.5-6.5 | |||
| 使用部位Use part | 窑口Kiln mouth | coal injection pipe | ||||
