|
| Concentration of starting components, mass.% | ||||||||
| Composite index | Kaolin, of Prosianaya (Ukraine) | Al | Al2O3 | SiC | Si | Perlite of Aragats (Armenia) | Y2O3 | MgO | Clay of Polog (Ukraine) |
| CH-6 | 15 | 20 | 20 | 20 | 22 | 3 | 2 | 1 | 5 |
| CH-7 15 25-30 27 3 2 1 5 | |||||||||
| CH-8 15 25 30-27 3 2 1 5 | |||||||||