How to select ball size - Grinding & Classification Circuits - Metallurgist & Mineral Processing Engineer

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How to select ball size (3 replies and 2 comments)

1 year ago

Hi everyone, I want to determine the size of steel ball, according to the equation of Bond and the equation work index: W=WI* (10/√P80 -10/√F80), for calculating Wi, I need to konw the W(work input,kwh/metric ton), so how can I obtain the work input ? my grinder see the photo, constant speed.

thank you

https://www.911metallurgist.com/wp-content/uploads/2022/12/IMG_20220719_154542.jpg

Jorge

1 year ago

Jorge 1 year ago

Follow the links below to read techincal information on ball size and charge volume,

https://www.911metallurgist.com/blog/calculate-and-select-ball-mill-ball-size-for-optimum-grinding

https://www.911metallurgist.com/blog/ball-mill-charge-volume-calculation

chez2204

1 year ago

Hi, thanks for these information, but according to these information, but It seems impossible to calculate the W(energy input). I want to calculate like : Work Input (Energy input): W= (1800 kw)/ 300 t/h=6.0 kwh/t, instead of charge volume.

chez2204

1 year ago

chez2204 1 year ago

Mike

1 year ago

Mike 1 year ago

Your original question was entitled: How to select ball size, which Jorge answered if instead you are looking for the required energy input see: SDM Ball Mill Calculations here: https://www.smartdogmining.com/software/default.html

chez2204

1 year ago

thank you

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