Also regarding yr ball charge:

C1: Why u don’t have 90 mm balls? Usually it’s either all three sizes equal or the order is 40% 40% 20%

C2: depends on your mill and liner type but it should be in increasing order. Why you have only a small percentage of 30 mm balls? Why no 17 mm balls?

hi ,

sir . I mean manual operation sir is that we have no instrumentation like we monitor it in CCR only at the field we listen to the sound of grinding media 

ok that's fine.

tell me more about yr mill. ansewr the questions i asked?