What is the details of our no cement castable?
1.No cement castable is on the basis of Ultra-low cement refractory castable,which contain CaO content less than 0.2%.
2.No cement castable is made by refractory aggregate and powder,oxide powder or collosol,dispersing agent and coagulant.
What is the Technique Data of our no cement castable?
|
Item |
Fire clay |
High alumina |
Corundum |
Al-Mg |
|
Chemical Composition % |
Al2O3 ≥ |
45 |
75 |
95 |
AL2O3+MgO≥70 |
|
CaO ≤ |
0.2 |
0.2 |
0.2 |
Cr2O3≥3 |
|
Bulk density g/cm3 |
110°C,24h |
2.35 |
2.70 |
3.20 |
2.60 |
|
1350°C,3h |
2.30 |
- |
- |
- |
|
1500°C,3h |
- |
2.65 |
3.20(1600°C) |
2.55 |
|
Reheating linear change % |
1350°C,3h |
±0.5 |
- |
- |
- |
|
1500°C,3h |
- |
±0.5 |
±0.5(1600°C) |
0-+1.0 |
|
Bending Strength MPa |
110°C,24h |
2 |
3 |
4 |
3 |
|
1350°C,3h |
7 |
- |
- |
- |
|
1500°C,3h |
- |
7 |
12(1600°C) |
3 |
|
Compressive strength MPa |
110°C,24h |
10 |
11 |
14 |
10 |
|
1350°C,3h |
60 |
- |
- |
- |
|
1500°C,3h |
- |
80 |
100(1600°C) |
10 |
|
Service temperature °C ≥ |
1450 |
1550 |
1700 |
1500 |
