化学指标

SCA

SCA

SCA

CaO

30-35%

30-38%

32-35%

Al₂O₃

54-58%

53-58%

52-58%

MgO

2%max

3%max

2%max

SiO₂

7%max

6%max

7.5%max

Fe₂O₃

3%max

3%max

3%max

TiO₂

4%max

3%max

3%max

S 

0.20%

0.3%max

F 

0.2%max

K₂O+Na₂O

1.5%max