类别 | 化学成分质量分数(%) | |||||||
CaO | MgO | K2O + Na2O | Cl− | P2O5 | SO3 | fSiO2 | ||
石英质 | 燧石质 | |||||||
I级品 | ≥48 | ≤3 | ≤0.6 | ≤0.020 | ≤0.80 | 0.5 | ≤6 | ≤4 |
II级品 | ≥45 | ≤3.5 | ≤0.6 | ≤0.030 | ≤0.80 | 0.5 | ≤8 | ≤4 |