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Quartzite
Foundry-grade silica mass.
High-purity quartzite lumps used as a raw material in ferro-silicon, silico-manganese and silicon-metal production, and as refractory ramming mass in induction furnaces.
Typical specifications
| SiO₂ | ≥ 98% |
| Fe₂O₃ | ≤ 0.10% |
| Al₂O₃ | ≤ 0.50% |
| Moisture | ≤ 1.0% |
| Size | 10–80 mm / 40–150 mm |
| Form | Hand-picked lumps |
Indicative ranges. Actual specs vary by source mine / mill and lot.
