Crucibles are produced by vibration casting (Vibro-cast) when the required size or shape is un economic or impractical by the isopressing production method.
Capital Refractories is able to offer a range of vibration cast crucibles, including Teapot ladles:
Benefits
- Melt capacities in excess of 100 kg.
- Complex shapes, e.g. internal pouring siphon.
If the size you require is not listed please contact us and we will endeavour to fulfil your requirements.
The normal crucible mixes below can all be cast into different pre-cast shapes.
Properties
Analysis / Wt. %
| Quality | Analysis / Wt. %
|
||||||
Al2O3 |
SiO2 |
MgO |
CaO |
Fe2O3 |
Cr2O3 |
Na2O + K2O |
|
| Alumina AL97C | 96.6 |
2.5 |
< 0.1 |
0.1 |
< 0.1 |
- |
0.1 |
| Alumina AL96C | 97.0 |
2.5 |
< 0.1 |
0.1 |
< 0.1 |
- |
0.2 |
| Alumina AL92C | 92.1 |
7.2 |
< 0.1 |
0.1 |
< 0.1 |
- |
0.1 |
| Chrome-alumina CA93C | 93.0 |
2.8 |
< 0.1 |
3.6 |
< 0.1 |
3.6 |
0.2 |
| Sillimanite SL70C | 70.6 |
27.1 |
< 0.1 |
0.1 |
0.7 |
- |
0.2 |
| Sillimanite SL66C | 67.4 |
30.1 |
0.1 |
0.1 |
0.8 |
- |
0.8 |
| Sillimanite SL63C | 63.8 |
34.2 |
0.1 |
0.2 |
0.5 |
- |
1.1 |
| Sillimanite SL57C | 56.9 |
37.4 |
0.1 |
0.2 |
0.9 |
- |
1.2 |
| Sillimanite SL56C | 56.5 |
41.1 |
0.1 |
0.1 |
0.7 |
- |
1.4 |
| Sillimanite SL47C | 47.6 |
49.1 |
0.1 |
0.1 |
0.8 |
- |
1.6 |
Properties
Physical Properties
| Quality | Physical Properties |
|||
Bulk Density / g cm-3 |
Apparent Porosity / % |
Coeff. Thermal Expansion / MK-1 |
Thermal Conductivity / W m-1 K-1 |
|
| Alumina AL97C | 2.95 |
23.8 |
8.0 |
4.2 |
| Alumina AL96C | 3.05 |
20.0 |
8.0 |
4.4 |
| Alumina AL92C | 2.84 |
21.5 |
7.8 |
2.3 |
| Chrome-alumina CA93C | 3.05 |
23.0 |
8.2 |
3.4 |
| Sillimanite SL70C | 3.05 |
23.0 |
8.2 |
3.4 |
| Sillimanite SL66C | 2.51 |
18.3 |
5.2 |
1.9 |
| Sillimanite SL63C | 2.32 |
22.0 |
5.0 |
1.4 |
| Sillimanite SL57C | 2.27 |
20.6 |
4.8 |
1.2 |
| Sillimanite SL56C | 2.32 |
20.0 |
4.8 |
1.2 |
| Sillimanite SL47C | 2.12 |
21.5 |
4.4 |
1.1 |