The same policy is employed for the makeup charge where adding different ball sizes is done in order to optimize the mill performance. Chimwani et al. (2015) developed a simulation program that could predict optimal makeup balls to be added in order to achieve a required product fineness.

In Grinding, selecting (calculate) the correct or optimum ball size that allows for the best and optimum/ideal or target grind size to be achieved by your ball mill is an important thing for a Mineral Processing Engineer AKA Metallurgist to do.

The geometry of a mill with conical ends is shown in Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill, or large lumps of ore in an

Analysis of ball movement for research of grinding mechanism of a stirred ball mill with 3D discrete element method 587 Korean J. Chem. Eng.(Vol. 25, No. 3) initial charged position of balls is arranged as shown in Fig.3 without any contact between balls and stirrers. The material of stirrer and the size of inlined balls are same as the media