More balls with small size results in fine powder As a thumb rule powder to be milled should be taken as 25% of total ball weight If the quantity of charge is very less then milling balls will ,

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Get Pricehow to calculate charge in ball mill « gravel crusher sale how to calculate charge in ball mill Description : Calculations for mill motor power, mill speed and media charge L = Internal length of the mill in cms after lining

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Get PriceEnter the number of lifters that are exposed above the mill charge Fractions are acceptable and should be used in the case where the charge does not sit uniformly in the mill For example, you may have 29 rows exposed at the discharge end of the mill, and only 28 exposed at the feed end

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Get PriceRod mills are very similar to ball mills, except they use long rods for grinding media The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball millTo prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 14 to 16Rod mills accept feed up to about 50 mm (2 in) and produce a product in the size range of ,

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Get PriceBall mill media charge formula Ball mill a typical type of fine grinder is the ball milla slightly inclined or horizontal rotating cylinder is partially filled with balls, usually stone or metal, which grind material to the necessary fineness by friction and impact with the tumbling balls ball mills normally operate with an approximate ball charge of 30

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Get PriceApr 06, 2018 Mill Steel Charge Volume Calculation We can calculate the steel charge volume of a ball or rod mill and express it as the % of the volume within the liners that is filled with grinding media While the mill is stopped, the charge volume can be gotten by measuring the diameter inside the liners and the distance from the top of the

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