Click Here: Get Latest Price
Bond ball mill work index for pure quartz.Bond ball mill work index for pure quartz documents crusher work index tests 23584 crusherexporters 2 binq mining equipment bond ball mill work index for pure new projects allischalmers ran sgs bond tests mining apr 15 2014 similar impact crushing work index of granite in sri lanka laos iron ore processing plant bond.
Use of work index since its introduction in the 1960s the bond ball mill work index bbmwi parameter has been extensively used in predicting ball mill power draw.Along with comminution circuit design the work index parameter is widely used in tracking mill performance.Due to the age and lack of controls for the test many.
Get Latest PriceBond test does not exceed 2.6.The aim of this study was to develop a new method for assessing the bond work index in a ball mill bbwi, which is based on a first order kinetics present in the bond ball mill for grinding mineral raw materials austin et al., 1981 ahmadi and shahsavari, 2009.Theoretical basis of quick procedure.
Get Latest PriceThe bond work index is a measure of ore resistance to crushing and grinding and is determined using the bond grindability test.Its value constitutes ore characteristic and is used for industrial.
Get Latest PriceBond test wis kwht rod mill ball mill 9.5 kwht.8 9 kwht.Bond standard circuit work index assume the rod mill work index of 9.5 applies from the actual rod mill feed sizeof 19,300 m although some of this work might ideally be done by crushers to achieve a rod mill.
Get Latest Price2.2.Ball mill batch process the mill dimensions, d l, are 0.204 0.158 m and it is loaded with 6.5 kg steel balls between 25 and 32 mm in diameter.The mill rotates on rolls and its frequency is set to 70 rpm 1.667 hertz corresponding to 85 of the critical frequency.The mill power is p 16.2.
Get Latest PriceRod mill work index has not been de ned as yet.The ball mill work index is con rmed at 16 kwht.The operating work index, though, is in the range of 21 kwht to 25 kwht showing high inef ciency.This raises the point that, in some cases, the bond ef4 oversize factor calculation is not suf cient to compensate.
Get Latest PriceJktech laboratory services jktech jktech.For every bond ball mill work index test carried out at jktech a standard report is issued the report details the bond test procedure method and presents the results including f80 p80 grindability and work index further interpretation of the results is available if required frequently asked questions bond ball mill work index.
Get Latest PriceThe bonds standard ball mill is used to determine the work index value of differ ent samples.The bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of 80 passing 100 m.If the breakage.
Get Latest PriceSubmitted to the bond ball mill work index test.The number of sag mill revolutions required to grind the material to a p 80 of 1.7 mm is used to predict agsag specific energy using quation 4.Correction e factors for feed size and pebble ing are applied to.
Get Latest PriceFigure 8 rod millball mill work index ratio v.Unconfined compressive strength 100 200 300 400 ucs mpa 0 0.5 1 1.5 2 wirmwibm metric siddall et al 1996 identified the ratio of bond rod mill work index and ball mill work index as being indicative of an ores compentency.Figure 8 plots this ratio versus ucs no trend is apparent.
Get Latest PriceThe present investigation involves the identify the physical properties of three different types of iron ores by using bond ball mill.The result shows that the maximum bond work index of 14 kwhmt was obtained for a type iron ore sample.The bond work index for b and c type iron ore sample are of 11 and 10 kwhmt.
Get Latest PriceThe bond work index is a measure of ore resistance to crushing and grinding and is determined using the bond grindability test.Its value constitutes ore characteristic and is used for industrial comminution plants designing.Determining the bond work index value is quite complicated, timeconsuming and requires trained operating personnel and therefore is subjected to errors.
Get Latest PriceLaboratory work index of the ball mill feed, the standard bond ball mill was implemented.To estimatepredict the amount of consumed energy, and sag mill feed hardness, bond equation or bonds laboratory work index cannot be used, thus a starkey mill was used to measure sag mill power index 5.
Get Latest PriceBond ball mill work index bond rod mill work index bond crushing low-energy impact work index formulae.Rowland, 2006.Where cf is an optional calibration factor, use 1.0 for normal situations.The rod mill oversize feed factor ef 4 rm is calculated using the greater of the samples rod mill or crushing work index which is usually the.
Get Latest PriceA bond ball mill work index test may be required for the design of a new mineral processing plant.Where possible it is carried out on a the test then involves a series of batch grinds in a standard bond mill.A bond mill is 0.305m by 0.305m with rounded corners a smooth lining and runs at 70rpm.The charge consists of 285 balls weighing a.
Get Latest Price