Rod Mill Work Index Table Mineral Processing Metallurgy, Rapid determination of bond rodmill work index by craig taylor on scribd by david michaud 20170317t1951110400 june 19th 2015 categories grinding comments off on rod mill work index Bond Rod Mill For Work Index
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This test determines the bond rod mill work index which can be used with bonds third theory of comminution to calculate net power requirements of sizing rod mills the test is a closedcircuit dry grindability test is run in a standard rod mill and can be performed at sizes ranging from 476 mm to
Read more +Internationally accepted mineral metallurgical standard test procedures to determine the physical properties of ores include the bond ball mill work index and the bond rod mill work index these are empirical indices determined by close circuit grindability tests developed by in the mid 1930s
Read more +Bond ball mill work index bwi kwht 134 bond rod mill work index rwi kwht 181 table 1 example of agsag ball mill circuit wio calculations 1 2 abstract optimum use of power in grinding both in terms of grinding efficiency and use of installed capital can have a large effect on profitability
Read more +The bond rod mill work index is not as common as the bond ball mill work index and there are two different variations on the mill models expect a mill with a wave liner and is not compatible with mills using smooth liners
Read more +Cleaning and storing of ball mill charge after the bond work index procedure is done add about 500 g of silica sand into the mill containing the ball charge seal the mill rotate for 20 revolutions to clean empty the mill charge and sand into the ball try once grinding is complete clean out the mill using a brush put the lid on the mill
Read more +A bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits sample requirements a minimum of 8 kg of material crushed to nominally minus 10 mm is preferred jktech would stage crush the sample to minus 335 mm as required for the bond ball mill work index test feed
Read more +The titan bond work index rod mill is onepiece cast construction with integral wave liners of a form described by bond this mill is used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating productionsize rod mills
Read more +Rod mill power is dependent on mill capacity and work index mill power increases with increasing rod charge increasing mill speed increasing mill length rowland and kjos 1980 provided an expression to quantify power draw at the pinion shaft per unit mass of rods pm mr 1752 d033 63 54jr c kwt d mill
Read more +The grinding jar for the bond index rod mill is 12 x 24 in size and has a waveshaped design at least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill the rod mill work index rwi is used for particle size determination in a size range from 25 mm down to 21 mm whereas ball mill work
Read more +Bond rod mill grindability test grinding solutions can carry out bond rod mill work index tests to determine the energy requirements for milling ore in a rod mill the test requires a minimum of 20kg of 125mm material closing screen sizes typically range from 475mm to 212m abrasion index test
Read more +Bond test wis kwht rod mill ball mill 95 kwht8 9 kwht bond standard circuit work index assume the rod mill work index of 95 applies from the actual rod mill feed sizeof 19300 m although some of this work might ideally be done by crushers to achieve a rod mill f80 of 16000 m to a rod
Read more +The design of rod and ball mills is still carried out with the bond ball mill and rod mill grindability tests as discussed earlier in this paper it is important in this case to match the reduction size of the test to that desired from the industrial mill as such primary ball mills should be designed with the rod mill work index and single
Read more +Rapid determination of bond rodmill work index by craig taylor on scribd by david michaud 20170317t1951110400 june 19th 2015 categories grinding comments off on rod mill work index
Read more +Standard bond crushing and rod mill work indices abrasion indices and by dawson for bond ball mill work index tests using crushed feed and standard autogenous grinding design sagdesign tests patented by outokumpu see reference 8 below the comparison of these results gives context to how the various measurements relate to each
Read more +The standard bond rod mill work index test procedure is firstly to stage crush the feed to pass 127 mm and size a representative sample the test then involves a series of batch grinds in a standard bond rod mill a bond rod mill is 0305m by 0610m with wave liners of a form described by bond which runs at 40rpm and tilts as described below
Read more +Wirm bond rod mill test work index kwht wistd standard circuit bond work index expected or designed used for circuit design specific energy requirement at the drive pinions ds work index work index efficiency bond work index testing uction and background
Read more +You need a twostage solution first stage opencircuit mill and then second stage closedcircuit mill first stage will be broken into two parts as well you use a bond rod mill work index for the coarse component of the ore 21 mm and the bond ball mill work index for the fine component 21 mm
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