低铬 | 低铬 铬刚玉 | ||
Al2O3 | Cr2O3 | Na2O | |
F12-F80 | ≥98.5 |
0.2-0.45 | ≤0.5 |
F90-F150 | ≥98.5 | ≤0.55 | |
F180-F220 | ≥98.0 | ≤0.60 |
中铬 | 中铬 铬刚玉 | ||
Al2O3 | Cr2O3 | Na2O | |
F12-F80 | ≥98.2 |
0.45-1 | ≤0.55 |
F90-F150 | ≥98.2 | ≤0.6 | |
F180-F220 | ≥97.8 | ≤0.7 |
高铬 | 高铬铬刚玉 | ||
Al2O3 | Cr2O3 | Na2O | |
F12-F80 | ≥97.4 |
1-2 | ≤0.55 |
F90-F150 | ≥97 | ≤0.60 | |
F180-F220 | ≥96.5 | ≤0.70 |