HF系列滑石粉

指标\级别
特级
一级
二级
三级
四级
SiO2≥
60%
57%
52%
47%
35%
MgO≥
30%.
31%
31%
31%
31%
CaO≤
0.65%
0.7%
1.0%
1.5%
0.5%
Fe2O3≤
0.3%
0.4%
0.4%
0.5%
0.5%
AL2O3≤
0.3%
0.3%
0.5%
0.5%
0.5%
白度≥
90
89
87
86
85
烧失量≤
6%
10%
13%
17%
25%
通过率
98%
98%
98%
98%
98%
水分
0.3%
0.3%
0.3%
0.3%
0.3%