Official PDF , 68 pages The World Bank Documents
Improving Thermal and Electric Energy Efficiency at Cement Plants . 2.5.2 Replacing a Ball Mill with a Vertical Roller Mill, HighPressure Grinding such materials as fly ash from power plants, blast furnace slag Figure 15 Energy Savings Potential of Vertical Roller Mills versus Ball Mills. Ball mill. VRM. 2,500. 3,500.