Sizing a mill - A Statistical Approach

In an ore-dressing plant, the energy consumption (kwh/t) in grinding constitutes about 70% of the total processing cost. Thus the energy consumption of a grinding mill becomes an important factor in cost economics of the process. Of the several factors affecting the energy cons-umption of grinding mill, the size (dia) of the mill is more important. It is also seen that maximum energy consumption(1) is attributed to the bail load as it const-itutes 45-50% of the mill volume.