成分
SiO
2
Al
2
O
3
Fe
2
O
3
CaO
MgO
SO
2
K
2
O + Na
2
O
含量%
39~64
17~26
1.4~6.3
0.1~20.4
0.4~3.4
0.2~4.7
0.4~3.4