|
级别 |
名称 |
二氧化硅不低于% |
杂质不高于ppm |
灼烧矢量不高于% | ||||||
|
三氧化二铁 |
铬 |
铝 |
钛 |
锂 |
钠 |
钾 | ||||
|
1 |
超纯石英砂 |
99.98 |
2.0 |
0.5 |
30 |
2.0 |
3.0 |
3.0 |
3.0 |
0.1 |
|
2 |
高纯石英砂 |
99.98 |
4.0 |
0.5 |
70 |
3.0 |
|
|
|
|
|
3 |
浮选石英砂 |
99.95 |
20 |
1.0 |
|
5.0 |
|
|
|
|
|
4 |
光学盐酸石英砂 |
99.6 |
50 |
2.0 |
|
300 |
|
|
|
|
|
5 |
晶质玻璃石英砂 |
99.0 |
200 |
2.0 |
|
|
|
|
|
|
|
6 |
仪器玻璃石英砂 |
99.0 |
300 |
2.0 |
|
|
|
|
|
|
|
7 |
普通石英砂 |
98.5 |
400 |
6.0 |
|
|
|
|
|
|
|
8 |
一般石英砂 |
98.5 |
600 |
6.0 |
|
|
|
|
|
|
|
9 |
低档石英砂 |
97.0 |
2000 |
|
|
|
|
|
|
|
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