 (PDF) DESIGN AND FABRICATION OF MINI BALL MILL To ensure the stability of the mini ball mill, a ball mill base is design and fabricate to withstand the weight of the rotating jar, motor and gears After a few hours, stop the mini ball mill and TECHNICAL NOTES 0 GRINDING R P King Figure 00 Effect of mill filling on power draft for ball mills The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 0000 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 00 The speed of rotation of the mill influences the power draft through two effects: the value of N 