cements ground in the vertical roller mill fulfil the quality . - LoescheCEMENT INTERNATIONAL 4 2/2013 4 VOL. 11. ZUSAMMENFASSUNG .. 4 500. 5 000. Figure 1: Specific power consumption of ball mill system v/s vertical roller mill system for OPC grinding. Ball mill system. Loesche. VRM system. Power consumption [kWh/t]. 20. 40 .. over-grinding. Clinker Gypsum Line. Product.four vertical roller mill line,MPS vertical roller mill - Coal mill, gypsum mill, clay mill, etc .Highest flexibility with constant product quality, individually conceived, suitable for a variety of applications, undergoing constant development: with a number of more than 2800 mills sold, the MPS vertical mill is our proven allrounder. It can be used for the grinding of coal, petcoke, clay, line, quicklime and many other.