|
級(jí)別 |
名稱 |
二氧化硅不低于% |
雜質(zhì)不高于ppm |
灼燒矢量不高于% | ||||||
|
三氧化二鐵 |
鉻 |
鋁 |
鈦 |
鋰 |
鈉 |
鉀 | ||||
|
1 |
超純石英砂 |
99.98 |
2.0 |
0.5 |
30 |
2.0 |
3.0 |
3.0 |
3.0 |
0.1 |
|
2 |
高純石英砂 |
99.98 |
4.0 |
0.5 |
70 |
3.0 |
|
|
|
|
|
3 |
浮選石英砂 |
99.95 |
20 |
1.0 |
|
5.0 |
|
|
|
|
|
4 |
光學(xué)鹽酸石英砂 |
99.6 |
50 |
2.0 |
|
300 |
|
|
|
|
|
5 |
晶質(zhì)玻璃石英砂 |
99.0 |
200 |
2.0 |
|
|
|
|
|
|
|
6 |
儀器玻璃石英砂 |
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 |
低檔石英砂 |
97.0 |
2000 |
|
|
|
|
|
|
|
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