The largest vertical roller mill (VRM) in the world is currently the OK™ 81-6 Mill by FLSmidth, designed for cement grinding. Here are its key specifications:
FLSmidth OK™ 81-6 Vertical Roller Mill
– Capacity: Up to 640 t/h (cement)
– Motor Power: 11,600 kW (~15,500 HP)
– Table Diameter: ~8.1 meters (~26.6 ft)
– Roller Diameter: ~3.7 meters (~12 ft)
– Application: Primarily for cement raw meal, slag, and clinker grinding
This mill is part of FLSmidth’s high-capacity “OK Mill” series, optimized for energy efficiency and large-scale production.
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Other Notable Large VRMs:
1. Gebr. Pfeiffer MVR 6700 C-6
– Capacity: ~450 t/h (cement)
– Motor Power: ~7,400 kW
2. LOESCHE LM 70.4+4
– Capacity: ~370 t/h (raw meal)
Industry Trends:
VRMs are increasingly preferred over ball mills due to:
✔ Lower energy consumption (~30–50% less power)
✔ Compact footprint
✔ Ability to grind multiple materials
Would you like details on a specific application (e.g., slag, coal, or raw meal grinding)?
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