Vertical Roller Mill Calculation Xls. Feb 14, 2021 Jan 01 2009 Table 2 Capacity (t/h) 99 Grinding results different types of coals 74 m yield ( ) Grindability factor (g/r) Mill type Ball mills Vertical roller mills Power consumption (kWh/t) 21 12 Main parameters of the vertical roller mill (CKP) Rated power (kW) 950 Measured power (kW) 745 Roller Rotating table .