| Composite index | Initial component composition, mass. % | ||||||||
| kaolin | Al | Al2O3 | SiC | Si | Pearlite, Armenia | Y2O3 | MgO | Polog clay, Ukraine | |
| SN-1 | 80.00 | 20.00 |
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|
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| SN-2 | 20.00 | 10.00 |
| 70.00 |
|
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|
|
|
| SN-3 | 20.00 | 10.00 | 70.00 |
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|
| SN-6 | 18.52 | 18.52 | 18.52 | 18.52 | 20.37 | 2.78 | 1.85 | 0.92 |
|
| SN-7 | 13.89 | 23.15 |
| 27.78 | 25.00 | 2.78 | 1.85 | 0.92 | 4.63 |
| SN-8 | 13.89 | 23.15 | 27.78 |
| 25.00 | 2.78 | 1.85 | 0.92 | 4.63 |