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Capital Refractories Limited |
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Crucibles are produced by vibration casting (Vibro-cast) when the required size or shape is un economic or impractical by the isopressing production method..
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, including Teapot ladles.
| Quality | Analysis / Wt. %
|
Physical Properties |
|||||||||
Al2O3 |
SiO2 |
MgO |
CaO |
Fe2O3 |
Cr2O3 |
Na2O + K2O |
Bulk Density / g cm-3 |
Apparent Porosity / % |
Coeff. Thermal Expansion / MK-1 |
Thermal Conductivity / W m-1 K-1 |
|
| Alumina AL97C | 96.6 |
2.5 |
< 0.1 |
0.1 |
< 0.1 |
0.1 |
2.95 |
23.8 |
8.0 |
4.2 |
|
| Alumina AL92C | 92.1 |
7.2 |
< 0.1 |
0.1 |
< 0.1 |
0.1 |
2.84 |
21.5 |
7.8 |
2.3 |
|
| Chrome-alumina CA93C | 93.0 |
2.8 |
< 0.1 |
3.6 |
< 0.1 |
3.6 |
0.2 |
3.05 |
23.0 |
8.2 |
3.4 |
| Sillimanite SL70C | 70.6 |
27.1 |
< 0.1 |
0.1 |
0.7 |
0.2 |
3.05 |
23.0 |
8.2 |
3.4 |
|
| Sillimanite SL63C | 63.8 |
34.2 |
0.1 |
0.2 |
0.5 |
1.1 |
2.32 |
22.0 |
5.0 |
1.4 |
|
| Sillimanite SL56C | 56.5 |
41.1 |
0.1 |
0.1 |
0.7 |
1.4 |
2.32 |
20.0 |
4.8 |
1.2 |
|
| Sillimaite SL47C | 47.6 |
49.1 |
0.1 |
0.1 |
0.8 |
1.6 |
2.12 |
21.5 |
4.4 |
1.1 |
|