### AMIT 135: Lesson 7 Ball Mills Circuits Mining Mill

Ball Mill Design A survey of Australian processing plants revealed a maximum ball mill diameter of 5 24 meters and length of 8 84 meters Morrell, 1996 Autogenous mills range up to 12 meters in diameter The lengthtodiameter ratios in the previous table are for normal applications For primary grinding, the ratio could vary between 1:1and 1 8:1