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| 刚玉制品 |
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特点：烧结电熔刚玉制品采用纯电熔白刚玉、合成莫来石、氧化铬为原料经高温烧结而成。产品具有结构致密、耐压强度高、热震稳定性好，耐酸、碱性气体侵蚀、不受H2、CO等还原性气体的影响等特性。用途：广泛用于石油化工和化肥工业的裂解、转化炉、冶金行业等各种高温窑炉内衬、及窑具. |
| 名称 |
高纯刚玉砖
DL-98 |
普通刚玉砖
DL-95 |
普通刚玉砖
DL-90 |
莫来石刚玉砖MDL-80 |
铬钢玉砖
GDL-85 |
| 指标 |
| 化学成分 |
项目 |
| AL2O3% |
≥98.5 |
≥95 |
≥90 |
≥80 |
≥85 |
| Cr2O3% |
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≥8 |
| SiO2% |
≤0.3 |
≤3.0 |
≤9.0 |
≤18 |
≤0.2 |
| Fe2O3% |
≤0.2 |
≤0.2 |
≤0.5 |
≤0.5 |
≤0.2 |
| R2O% |
≤0.3 |
≤0.6 |
≤0.6 |
≤0.4 |
≤0.5 |
| 体积密度g/cm3 |
≥3.0 |
≥2.9 |
≥2.9 |
≥2.7 |
≥3.1 |
| 常温耐压强度Mpa |
≥75 |
≥100 |
≥100 |
≥60 |
≥80 |
| 耐火度(℃) |
≥1790 |
≥1790 |
≥1790 |
≥1790 |
≥1790 |
| 荷重软化点0.2MPaKD℃ |
≥1700 |
≥1650 |
≥1650 |
≥1700 |
≥1700 |
| 重烧线变化(%) |
1600℃×3h
≤0.2 |
1600×3h
≤0.2 |
1600×3h
≤0.2 |
1600×3h
≤0.3 |
1600×3h
≤0.2 |
| 热稳定性
1100℃水冷次 |
≥6 |
≥10 |
≥10 |
≥20 |
≥15 |
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