
Bolo ea letsopa ea polokelo ea mocheso e entsoe ka alumina ea indasteri le kaolin e sa sebetseng e le thepa ea mantlha e tala. E entsoe ka saense, e bōpehile 'me e na le calcium mochesong o phahameng. E na le thepa e ntle:
1) Matla a phahameng a mechini le bophelo bo bolelele ba tšebeletso;
2) Botsitso bo botle ba lik'hemik'hale, ha ho na karabelo ea lik'hemik'hale ka thepa;
3) Ho hanyetsa mocheso o phahameng hantle, mocheso o phahameng ka ho fetisisa oa ho hanyetsa mocheso o ka fihla ho 1900℃.
| Ntho | Bolo e pholileng ea polokelo | Bolo ea polokelo ea mocheso |
| Al₂O₃ (%) | 20-30 | ≥65 |
| SiO₃+Al₂O₃(%) | ≥90 | |
| Fe₂O₃(%) | ≤1 | ≤1.6 |
| Boholo (mm) | 10-20/20-40 | 16-18/20-25 |
| Bokgoni ba mocheso (J/kg.k) | ≥836 | ≥1000 |
| Mocheso oa motlakase (w/mk) | 2.6-2.9 | 2-4 |
| Ho hanyetsa mocheso ka lebaka la ho thothomela (℃) | 800 | 1000 |
| Ho se tsitse ha lehare (℃) | 1550 | 1750 |
| Tahlehelo ea ho abrasion(%) | ≤0.1 | |
| Bothata ba Mohs (scal) | ≥6.5 | |
| Matla a sithabetsang (N) | 800-6000 | 1800-3800 |
| Bongata ba bongata (kg/m3) | 1300-1400 | 1500-1600 |