(PDF) Comparison of energy efficiency between ball mills …
At product sizes finer than 80% passing 75 lm, the efficiency of ball mill grinding rapidly decreases. The practical limit to ball mill product fineness is considered to be 40–45 lm (Gao and Weller, 1994). ... A feature of this type of stirred mill is high stirring velocity, aiming to supply sufficient energy input for grinding finer ...