| Number of Composite | Content of Components, wt.% | |||||||
| Kaolin | Al | Al2O3 | SiC | Si | Perlite | Y2O3 | MgO | |
| CH1 | 80 | 20 |
|
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|
|
|
|
| CH2 | 20 | 10 |
| 70 |
|
|
|
|
| CH3 | 20 | 10 | 70 |
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| CH6 | 18.52 | 18.52 | 18.52 | 18.52 | 20.37 | 2.78 | 1.85 | 0.92 |