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The finesse of the material milled by the ball mill is 0074mm04mm only except for the two small ball mills that have a wider range of 0075089mm however the rod mill fine grinding fineness is about 08330147mm in terms of the fineness of the ground material the ball mill has a finer handling ability
May 08 2020 ball mill vs rod milloutput size of material the output size of the grinding material in the ball grinding mill is generally between 0047mm04mm and that of the rod mill is between 0833mm0147mm ball mill vs rod millcharge ratio of grinding media
The cylinder lengthdiameter ratio of rod mill is generally 1520 while the cylinder lengthdiameter ratio of ball mill is smaller only slightly greater than 1 in addition the cylinder speed of the rod mill is lower than that of the ball mill so the grinding medium works in
Apr 02 2012 this paragraph is a brief explanation to the difference of ball mill and rod mill below the calling name of ball mill and rod mill comes from the different grinding medium rod mill is called rod mill because the grinding medium in the barrel is steel rod rod mill is usually wet overflow type and can be used as the first level open grinding
50100mm steel rod is usually used as grinding medium in rod mill while steel ball is used as grinding medium in ball mill the steel balls are in point contact with each other and the steel rod of rod mill is in line contact with each other so their working features are obviously different 4
In addition with same specificationthe the cylinder rotating speed of the rod mill is lower than that of the ball millthe rod mill usually uses 50100mm diameter steel rod as grinding medium while the ball mill uses steel ball as grinding medium area is small too but there are still great differences in the interior both of them are horizontal cylindrical structures
Ball mills vs rod mills 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 this produces a series of wedge shaped slots tapering toward the discharge end
Ball mill vs rod mill xinhai apr 7 2016 for details the grinding theory of ball mill and rod are different in many ways for ball mill the grinding force of steel ball to ore is less than themineral processing ball mills vs rod mills gringing oregold mining ball mill hot sale gold concentrate plant grinding gold mining ball mill
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
Sep 09 2019 the shape ratio of the two barrels is different the ratio of the length to diameter of the rod mill barrel is generally 1520 and the lining surface on the end cover is vertical plane the ratio of barrel length to diameter of the ball mill is small and in most cases the ratio is only slightly greater than 1
Ball mill ball mills are the most widely used one rod mill the rod mill has the highest efficiency when the feed size is 30mm and the discharge size is about 3mm with uniform particle size and light overcrushing phenomenon
For ball mill the grinding force of steel ball to ore is less than the impact because the contact area is small between balls and mineral thus the throwing motion of ball can produce a large impact but it need a high rotate speed and has a higher power consumption but for rod mill grinding effect is better which need a lower rotate speed and has a lower power consumption
Though ball mills are used more often rod mills can be the better option for specific mining ores and larger site projects in a ball mill the actual balls in the machine need to cascade in order for the grinding to be accomplished because of this more energy is needed to
Apr 09 2015 ball mills ball mill fig 1 is same kind of mill as rod mill except that it is filled with balls instead of rods because of balls have greater ratio of surface area than rods they are more suitable for fine grinding balls are also lighter so the kinetic energy of a single dropping ball is smaller than a rod
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
Metallurgical contentball mill capacity vs rod mill capacityworking principle operationrod mill capacity tableball vs rod mill conversiontypes of mill dischargeball mill trunnion and mill grate dischargeperipheral grinding mill dischargeload capacity of trunnion bearingsball mill rod mill linersgrinding mill gearsgrinding mill drivesball mill grinding circuitball mill specificationsall
With slightly larger barrel volumes than the essa ball mill series rod mills are ideal for larger and more coarse materials rod charges and an acoustic safety enclosure for the
Oleg d neikov in handbook of nonferrous metal powders 2009 tumbling ball mills tumbling ball mills or ball mills are most widely used in both wet and dry systems in batch and continuous operations and on a small and large scale grinding elements in ball mills travel at different velocities therefore collision force direction and kinetic energy between two or more elements vary
Our rod mills are available in multiple diameters to fit the needs of your operation grinding primarily by attrition rod mills require comparatively low levels of power to operate rod mills can be either wet or dry designs once replaced by ag and sag mills rod mills have had a recent resurgence in the industry
From the volume the ball mill divide into industrial ball mill and laboratory use the small ball mill sample grinding test in addition these mills also play an important role in cold welding alloy production and thermal power plant power production sag mill vs ball mill crushing ratio
Ball mill capacity vs rod mill capacityuntil recently many operators have believed that one particular type of grinding mill had greater efficiency and resulting capacity than some otherball vs rod mill conversionthe correct grinding mill depends so much upon the particular ore being treated and the product desired that a mill must have maximum flexibilityball mill trunnion and mill
Sep 09 2019 in the ball mill commonly used have the lattice ball mill and overflow ball mill named from different drainage structure and the rod mill does not use the grid plate drainore only overflow type and opening type two kinds the diameter of the hollow shaft at the drainage and end is generally larger than the same specification ball mill
Rod mill is a type of grinding mill whose grinding media is steel bar while ball mill is steel ball 1 rod mill are usually applied to grinding the wsn ore and rare metal in the reselection or magneticoredressing plant in order to avoid the damage caused by the over crushing 2
The ball mill has a great similarity in appearance with rod millwhich is most widely used in the cement and fertilizer production different from rod millball mill is also used as dry type grinding mill which is the main difference of the ball mill and rod mill because of its different grinding media
Though used different medium steel ball and steel rod are contained in ball mill and rod mill the working theory of ball mill and rod mill are similar when the shell move the medium in shell be raised and down which has a impact on ore some medium may close to
Comparing used ball mills vs used rod mills may 26 2010 ball mills and rod mills are both are used more often rod mills can be the better option for specific
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