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high capacity ball mill charge

ball mill charge - grinding & classification circuits

the ball charge and ore charge volume is a variable subject to what is the target for that operation. the type of mill also is a factor as if it is an overflow mill (subject to the diameter of the discharge port) is usually up to about 40-45%.

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ball mills - 911metallurgist.com

fig. 3. rubber lining grate mill. ball mill charge volume. the mill power is approximately directly proportional to the charge volume within the normal range. when calculating a mill 40 % charge volume is generally used. in pebble and ball mills quite often charge volumes close to 50 % are used.

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ball charge and grinding efficiency - grinding

what are the dimensions of the ball mill you are looking at 40% ball charge is quite high (unless you are looking at a small mill). a difference (duty vs. maximum) of 5% to 10% is fairly typical and you would likely struggle to perceive an energy efficiency difference between the two operating points.

calculate ball mill grinding capacity

a) total apparent volumetric charge filling – including balls and excess slurry on top of the ball charge plus the interstitial voids in between the balls – expressed as a percentage of the net internal mill volume (inside liners). b) overflow discharge mills operating at low ball fillings – slurry may accumulate on top of the ball charge; causing the total charge filling level to be

amit 135: lesson 7 ball mills & circuits – mining mill

for overflow ball mills the charge should not exceed 45% of the mill volume . for grate discharge mills the charge should occupy about 50% of the mill volume . bond developed a relationship that can be used to determine the percent charge by volume as a function of the vertical height above the charge he and the radius of the mill r i.e.

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