Modern mineral processing demands precision grinding solutions capable of achieving particle sizes as fine as 2 microns. Advanced grinding mills, such as vertical roller mills (VRM) and stirred media mills, are engineered to meet this challenge.
1. Vertical Roller Mill (VRM)
– Output fineness: 1–45 microns (adjustable)
– Capacity: 5–300 t/h
– Power consumption: 15–50 kWh/t
2. Stirred Media Mill
– Output fineness: 0.5–10 microns
– Capacity: 0.1–50 t/h
– Energy efficiency: Up to 50% better than ball mills
A complete ultra-fine grinding line includes:
– Primary crusher (jaw/cone) → Secondary grinding (ball mill) → Ultra-fine mill (VRM/stirred mill) → Air classifier → Packaging system.
| Equipment | Fineness Range (µm) | Capacity (t/h) | Power (kWh/t) |
|——————–|———————|—————-|—————|
| Vertical Roller Mill | 1–45 | 5–300 | 15–50 |
| Stirred Media Mill | 0.5–10 | 0.1–50 | 20–60 |
Q: How to maintain consistent 2-micron output?
A: Regular calibration of classifiers and mill pressure adjustments are critical.
Q: What materials suit this system?
A: Calcium carbonate, quartz, talc, and other non-metallic minerals.
A GCC (ground calcium carbonate) plant in Germany achieved D97 = 2µm using a stirred media mill with an annual output of 100,000 tons, reducing energy use by 40% vs traditional mills.
For abrasive materials, wear-resistant liners and optimized rotor designs extend equipment life by up to 30%.
