指 标 |
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项 目 |
SF96 |
SF93 |
SF90 |
SF88 |
Si2O, %≥ |
96.0 |
93.0 |
90.0 |
88.0 |
AL2O3 , %≤ |
1.0 |
1.0 |
1.5 |
-- |
Fe2O3 ,%≤ |
1.0 |
1.0 |
2.0 |
-- |
CaO+MgO,%≤ |
1.0 |
1.5 |
2.0 |
-- |
K2O+Na2O,%≤ |
1.0 |
1.5 |
2.0 |
-- |
C, %≤ |
1.0 |
2.0 |
2.0 |
2.5 |
灼减, %≤ |
1.0 |
3.0 |
3.0 |
4.0 |
PH值 , %≤ |
4.5~6.5 |
4.5~7.5 |
4.5~7.5 |
4.5~8.5 |
粒度(45um筛余),%≤ |
3.0 |
3.0 |
5.0 |
8.0 |
比表面积,㎡/g%≥ |
15 |
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水分,%≤ |
1.0 |
2.0 |
2.5 |
3.0 |
微硅粉、硅灰