What exactly is 'Work Index' and how can I make use of it - Metcom .We can now estimate the needed W if, for example, we accept a grind P80 of 250 um. W6. So with the same mill power we can increase the tonnage to . For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the Work.how to calculate mills and crushers power requirement,UBC MINE331 Lecture Notes - SAGMILLING.COMNov 11, 2015 . satisfy the power demand at the mill shell. Types of Models . Figure 2: Ball mill for determining Bond ball mill work index. 1 For the . from a primary crusher product size, F80, to a ball mill cyclone overflow product size, P80.
how to calculate mills and crushers power requirement