Table 3 Specifications of ball mill and feed.
Mill | Inner diameter, D (mm) | 200 |
Length, L (mm) | 200 | |
Volume, V (cm3) | 6283 | |
Critical speed, Nc (rpm) | 94 | |
Operational speed (70% of critical speed) (rpm) | 66 | |
Void between balls (cm3) | 276, 352,427, 503, 578 | |
U (particle filling) (%) | 40, 60, 80, 100, 120 | |
Ball | Material | Manganese Steel |
diameter (mm) | 12.7, 19.05, 25.4, 31.75, 38.1 | |
Specific gravity (gr/cm3) | 7.5 | |
Feed material | Specific gravity (gr/cm3) | 4.12 |
Feed size (mm) | 0–1 |
