RQ-2Kf
RQ-2Kf is particularly suited for large diameter quartz tubes and ingots. Russian Quartz recommends this grade for manufacturers of optical and special glass, quartz ingots etc.
Total content of impurities <11 ppm.
RQ-2Kf (75-165) (ENG)
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Chemical analysis
Typical values, ppm:
| Al | B | Ca | Cr | Cu | Fe | K | Li | Mg | Mn | Na | Ni | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4.2 | 0.07 | 0.09 | 0.01 | 0.01 | 0.11 | 0.12 | 0.30 | 0.08 | <0.01 | 0.30 | 0.01 | 2.8 |
Particle size distribution:
| Mesh size | Micron (µm) | Limit (wt %) |
|---|---|---|
| > 100 | > 150 | ≤ 2 |
| 200 -100 | 75 - 150 | ≥68 |
| < 200 | < 75 | ≤ 30 |
RQ-2Kf is manufactured from unique Quartz deposit in Kyshtym, Russia.
Kyshtym quartz has the highest chemical purity and good transparency, and for more than 50 years been successfully used as raw material for quartz tubes of various diameter, ingots and crucibles for photovoltaic and semi-conductor industries.