Experimental Study of Operational Parameters on Product Size Distribution of Tumbling Mill

To assess the effects of mill operating parameters such as speed, ball filling, slurry concentration and filling on grinding process size distribution product, it was endeavored to build a pilot model with smaller than mill. For this aim, 1 m × 0.5 implemented. There are 15 lifters 50 mm height face angle 30˚. In present work, combination balls (40% 60 diameter, 40% 40 diameter 20% 25 diameter) used media 10%, 15%, 25% total volume The experiments were carried out at 60%, 70%, 80% 90% critical speed. feed is copper ore 25.4 mm, which d 80 them 12.7 8 respectively slurries 40%, 50%, 70% solid between 2.5. results showed that best grading occurs 70–80% speed 20–25%. Optimized observed when 1–1.5 times bed voidage 60% 70%. mechanism in work both impact abrasion mechanisms.