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 |