How to Size a Ball Mill -Design Calculator & Formula - Mineral .Oct 23, 2016 . Estimation based on FLSmith (Krebs) Capacity Correlation. Ideally, design value should not exceed 13 psi. If higher, increase # of Cyclones or.how ball mills are designed,Calculate and Select Ball Mill Ball Size for Optimum Grinding .Aug 2, 2013 . In Grinding, selecting (calculate) the correct or optimum ball size that allows for the best and . Here is your Ball Mill Design/Sizing Procedure.