Refractories for cover
| Brand/Index | Al2O3(%) | Cr2O3(%) | MgO(%) | CaO(%) | Bulk density(g/cm³) | C.C.S(MPa) | Linear change rate 1650℃x3h(%) |
|---|---|---|---|---|---|---|---|
| Chrome corundum prefabricated parts | ＞65 | ≥5 | ≤2.0 | ＞2.55 | ＞70 | 0-0.5 | |
| Aluminum-magnesium spinel prefabricated parts | 80-90 | 3-5 | 4-8 | ≤2.0 | ＞2.95 | ＞60 | 0-0.8 |
