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# formula of efficiency of ball mill ## calculation of ball mill grinding efficiency - page 1 of 1

Mar 08, 2013 · calculation of ball mill grinding efficiency. dear experts . please tell me how to calculate the grinding efficiency of a closed ckt & open ckt ball mill. in literatures it is written that the grinding efficiency of ball mill is very less [less than 10%]. please expalin in a … ### formula s to calculate efficiency of ball mill-ball mill

Formula Of Calculating Ball Mill Efficiency. Formula amp 39 s to calculate efficiency of ball mill energy savings and technology comparison when calculating the recommended top size ball from bonds formula 1961 for regrind ball mill applications the required size is less than 25 mm for the vertical stirred mill no formula exists to power 50 amp 41 amps 900 kw 630 kw 550 kw 470 kw regrind ball mill aucu … ### factors affecting ball mill grinding efficiency

Oct 25, 2017 · The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: a) Mill Geometry and Speed – Bond (1954) observed grinding efficiency to be a function of ball mill diameter, and established empirical relationships for recommended media size and mill speed that take this factor into account ### quantifying grinding efficiency - grinding

EF3 - Diameter Efficiency Factor - using the base mill diameter of 2.44 meters (8') inside liners, the diameter efficiency factor can be calculated from the following: EF3 = (2.44/D)0.2............................................................................(4) ### how to size a ball mill -design calculator & formula

May 15, 2015 · 2) Ball milling – a ball mill with a diameter of 2.44 meters, inside new liners, grinding wet in open circuit. When the grinding conditions differ from these specified conditions, efficiency factors (Rowland and Kjos, 1978) have to be used in conjunction with equation 1 ### ball charges calculators

- Ball top size (bond formula): calculation of the top size grinding media (balls or cylpebs):-Modification of the Ball Charge: This calculator analyses the granulometry of the material inside the mill and proposes a modification of the ball charge in order to improve the mill efficiency: ### ball mill design/power calculation

Dec 12, 2016 · If P is less than 80% passing 70 microns, power consumption will be. Ball Mill Power Calculation Example. A wet grinding ball mill in closed circuit is … ### calculate and select ball mill ball size for optimum grinding

Aug 02, 2013 · To accelerate the math or calculation you can use the shortened formula: D m <= Km * d^0.5where Km =6 (log dk) is taken from Figure 5 according to the fineness of the finished product dk. These formulas are applicable to the case of feeding a mill with only single-sized balls and not a mixture without consideration for ball wear ### how to measure grinding efficiency

Apr 20, 2018 · Ball mill grindability test results Wi 15.0; Combined 15.0 x 4.2/13.4 + 14.3 x 9.2/13.4 14.52; Efficiency factor Wioc ÷ Wi 0.979; Grinding efficiency in % 102.11; This shows the rod mill is inefficient while the ball mill is performing efficiently better than … ### grinding efficiency of ball mill calculating equation

Ball charge loading – impact on specific power consumption and capacity152 Кб. Past ball mill studies have evaluated the importance of many factors in ball mill grinding efficiency including ball size distribution, mill length to diameterThere are several methods of calculating the net mill power draw for an industrial mill ### ball mill circuit classification system efficiency

Apr 22, 2018 · Therefore, it also represents the overall classification efficiency of the grinding circuit. A simple method for estimating the relative coarse solids inventory in the ball mill has been selected. It is the average of the coarse fraction in the ball mill feed and discharge size distributions ### calculates the ball mill charge of a ball mill

Mill Charge - an overview | ScienceDirect Topics. The efficiency of a ball mill depends on the number of contact points between the balls • There is a limit of ball diameter below which centrifuging of mill charge occurs; this limit can only be overcome by a change in the manner of ball movement • In sandmills, the