| Product |
NSX-750 |
CKL-750 |
MAC-BDS-70 |
MAC-BD-70 |
| Chemical composition(%) |
| MgO |
76.2 |
74.3 |
72 |
72 |
| Cr2O3 |
10.5 |
11.1 |
9.1 |
10 |
| Al2O3 |
6 |
7.6 |
9 |
9 |
| SiO2 |
1.7 |
2 |
2 |
2.5 |
| Fe2O3 |
4.5 |
4.3 |
4.6 |
5 |
| Physical properties |
| Apparent porosity(%) |
16.3 |
17 |
16 |
18 |
| Bulk specific gravity |
3.04 |
3.03 |
3.07 |
2.99 |
| Apparent specific gravity |
3.64 |
3.65 |
3.65 |
3.65 |
| Compressive strength(MPa) |
46 |
51 |
58 |
44 |
Bending strength(MPa)
at1500°C |
4.4 |
4.8 |
5.4 |
3.9 |
Permeability
x10-9m2/Pa·s |
41 |
46 |
- |
- |
Spalling resistance(DIN)
1200°C/times |
>30 |
>30 |
>30 |
>30 |
| Thermal conductivity(w/m·k) |
| (at600°C) |
2.9 |
2.9 |
2.9 |
2.9 |
| (at1000°C) |
2.5 |
2.5 |
2.5 |
2.5 |
| Applications |
Tuyere for refining furnace,
Tuyere for converter |
Tuyere for refining furnace,
Tuyere for converter |
Tuyere for refining furnace,
Tuyere for converter,
For body section |
Tuyere for converter,
For body section |
| Features |
High permanation resisitance for slag and metal |
High thermal spalling resisitance |
Super -high temp. burned direct -bond brick |
High temp. burned direct -bond brick |
