Steel Ladle Refractories

Main refractory materials of Steel Ladle Clay brick High alumina brick (48%) Refractory Ramming Material 1. Closing ring 2. Slag line 3. Walls 4. Bottom 5. Safety lining 6. Insulation 7. Lance 8. Well block 9. Filler sand 10. Ladle nozzle 11. Slide gate 12. Collector nozzle
Items项目 Index指标
SN-40 KN-40 XN-40 ZN-40
Al2O3 (%) 40
Refractoriness 耐火度 °C 1710
(RUL)Refractoriness Under Load 0.2MPa荷重软化开始温度,℃ 1370
(PLC)Permanent linear change on reheating 重烧线变化 (%)1350°C,2h - 0-0.3 -
Apparent porosity 显气孔率 (%) 15-23 22 15-25 23
 (C.C.S.)Cold Crushing Strength, MPa 常温耐压强度/MPa - 19.6 19.6
Thermal shock resistance (1100°C, water-cooling)/times 抗热震性/次 SN-40, XN-40 must perform this test, and the measured data should be indicated in the quality certificate (SN-40,XN-40必须进行此项检测,将实测数据在质量证明书中注明 )
Refractory Ramming Material (耐火捣打料)
Item 项目 Semi-zircon Zirconite High aluminum Aluminum texture Paraffin
Bulk density 体积密度 2.73 2.87 2.98 3.15 2.34
Apparent porosity, 显气孔率 (%) 15.7 15.4 17.3 17
Compressive strength MPa耐压强度/MPa 8.9 9.6 32 35 11.3
(PLC)Permanent linear change on reheating 重烧线变化(1400°C)(%) 3.01 0.31 2.56
(RUL)Refractoriness Under Load 荷重软化温度(T2)/°C 1490 1450
Refractoriness 耐火度°C >1630 >1630 >1825 >1825 >1610
Chemical composition 化学成分
SiO2 68 54 19.3 10.8 90
Al2O3 7 12 63.3 37.3 8
Fe2O3 5.2 16.6
Cr2O3 6.9 24.1
ZrO2 23 30 2.9 10.4
Application 应用 Drum well Slag line
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