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Jun 11 2019 in the order you have listed a ball mill can fine grind down to 400 mesh if needed a rod mill will efficiently grind to 150200 mesh range and a roll mill can do a 100 mesh the ball and rod mills are similar in appearence as a large rotating lined cylindrical tube filled with either metal balls or long rods used as the grinding medium
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I wrote an article comparison of ball mill and rod mill from the structure shape capacity material and the like points check here
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The rods grind the ore by tumbling within the the mill similar to the grinding balls in a ball mill to prevent the conditions leading to rod charge tangling the length to diameter ratio is maintained at 14 to 16 rod mills accept feed up to about 50 mm 2 in and produce a product in the size
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Ball mill vs rod mill ball mills vs rod mills because of this the rod mill can effectively reduce 1 feed size to 10 mesh or finer in open circuit the voids or interstitial space within a rod load are approximately half those in a ball mill grinding load rods in
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Rod 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 mill to prevent the conditions leading to rod charge tangling the length to diameter ratio is maintained at 14 to 16
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They can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work done by a ball mill sag mills are also an optimum solution for wet grinding since crushing and screening in these cases can be difficult if not impossible
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The mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a rod mill ball mill or pebble mill agsag mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill sizes in gold
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The rods grind the ore by tumbling within the the mill similar to the grinding balls in a ball prevent the conditions leading to rod charge tangling the length to diameter ratio is maintained at 14 to mills accept feed up to about 50 mm 2 in and produce a product in the size range of
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We have rod mill vs ball mill sizefeb 12 2017 ball vs rod mill conversion the correct grinding mill depends so much upon the particular ore being treated and the product desired that a mill must have maximum flexibility in length type of grinding medium type of discharge and speed
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Inventory id 6chm01 3 units unused flsmidth 26 x 43 dual pinion ball mill with 2 abb 9000 kw 12069 hp motors w abb vfd for total power of 18000 kw 24138 hp
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Ball mills vs rod mills 1 shape and structure the ratio of cylinder length to diameter of rod mill is generally 1520 and the inner surface of liner plate on end cover is vertical plane
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W is the work index measured in a laboratory ball mill kilowatthours per metric or short ton p 80 is the mill circuit product size in micrometers f 80 is the mill circuit feed size in micrometers rod mill a rotating drum causes friction and attrition between steel rods and ore particles
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Nov 19 2019 the rod mill adopts overflow type and open type discharge does not use grate type discharge the diameter of the rod mill discharge end is larger than that of the same size ball mill when the rod mill speed is lower than the working speed of the same size ball mill the medium in the rod mill is in a sloping working state
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Ball mills vs rod mills because of this the rod mill can effectively reduce 1 feed size to 10 mesh or finer in open circuit the voids or interstitial space within a rod load are approximately half those in a ball mill grinding load rods in place weigh approximately 400 pounds per cu ft
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The mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a rod mill ball mill or pebble mill agsag mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill
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Where d is the maximum size of feed mm is compression strength mpa e is modulus of elasticity mpa b is density of material of balls kgm 3 d is inner diameter of the mill body m generally a maximum allowed ball size is situated in the range from d 18 to d24 the degree of filling the mill with balls also influences productivity of the mill and milling efficiency
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Ball mills vs rod mills because of this the rod mill can effectively reduce 1 feed size to 10 mesh or finer in open circuit the voids or interstitial space within a rod load are approximately half those in a ball mill grinding because of this the rod mill can effectively reduce 1 feed size
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1 equipment construction of ball mill and rod mill on the surface many people are difficult to distinguish ball mill and rod mill but in fact these two mills have differences in the proportion of the cylinder shape typically the barrel length to diameter ratio of the rod mill is maintained between 15 20 and the inner surface of the
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As grinding equipments ball mills and rod mills are both high efficiency grinding equipments their common points are 1 they have the same function they are all used to grind materials so that the materials can reach the state of powder 2 the shape of ball mills and rod mills are similar they are all
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Ball mills vs rod mills ball mills vs rod mills previous next when the mill is rotated without feed or with very fine feed the rods are in parallel alignment and in contact with one another for their full length new feed entering at one end of the mill causes the rod charge to spread at that end
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Sep 09 2019 in the rough grinding the product particle size of 13mm the processing capacity of the rod mill is greater than the same specificationof ball mill when used for fine grinding the product granularity is less than 05mm the grinding effect of the ball mill is greater than the same specification of the rod mill
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And because the ball mill feed grain size is larger ball mill feeding groove must have a larger slope and height so that feed smooth bearing since the power of the autogenous tumbling mill is relatively small it is appropriate to choose dynamic and static pressure bearing the ball bearing liner is made of leadbased bearing alloy and the
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Ball mills vs rod mills 202053 because of this the rod mill can effectively reduce 1 feed size to 10 mesh or finer in open circuit the voids or interstitial space within a rod load are approximately half those in a ball mill grinding load
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Feed size should generally be 18 for ball mill and 12 for rod mill they are of a sturdy rugged design to handle frequent use with hard materials the batch ball and rod mills require a drive roll to rotate the mills the batch ball mill should be run between 56 rpm and 70 rpm the batch rod mill should be run between 47 rpm and 79 rpm
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