Vertical roller mills (VRM) can replace ball mills or tube mills used for preparing coal. Today VRMs with capacities up to 50 tph are the dominant technology for coal grinding. According to MIIT, grinding media wear in a VRM will only be 5 to 10 g/ton of coal powder, as compared to 100 g/ton of coal powder in a ball mill.
Extensive Pilot Testing carried out Lafarge Cement’s Exshaw Plant in Alberta, Canada has proven that we can effectively and efficiently cool cement as part of the finish grinding process and can provide designs for full production capacities of 50 TPH to 200+ TPH. For more detailed information on Cement Cooling, download our product handout.