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the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction. Hence from equation 7, to crush to the ball mill circuit feed size x. 2 in open circuit requires specific energy equivalent to: f x f x 2. 1 W c ic. 1.19* 4 2 M x x. 1 10 For closed circuit crushing the specific

Read MoreTheminution Specific Energy window at the top of the page gives the specific energy for the entire circuit. It is made up of the sum of any crusher/HPGR net specific energies plus the tumbling mill circuit specific energy at pinion. The associated 95 confidence levels are also shown

Read MoreThe SAG mill pinion energy, W SDT kWh/t and SAG discharge Bond ball mill work index, S d BWI kWh/t, are then used to calculate the total energy to grind the ore from 80 passing 152 mm to 80 passing the client specified final product size P 80.This information, along with the ore specific gravity, is used to calculate necessary mill sizes and motor power in industrial applications.

Read MoreOct 19, 2017· Wi specific energy consumption, kW*h/ton C the mill drum rotational speed, of the critical speed D the mill internal diameter, m. At result B = 25mm or less necessary to use the correction factor 1.3, i.e. the grinding balls average diameter should be 32.5 mm in the feed mixture.

Read MoreSagmilling.com is home to a collection of both free and subscription based calculation tools to aid metallurgical process engineersminution calculations. Grinding circuit design tools, including for SAG mill ball mill circuits, and geometallurgy energy models are available to subscribers.

Read Morecharacteristics of the ball mill discharge. Considering the Bond energy law and the correction factors by Rolland, the total specific energy E req requiredminution of mineral from the initial size F 80 coarse crushing discharge to the final size P 80 ball milling dis charge in the conventional circuit is found as follows: E req = 4

Read MoreThe basic parameters used in ball mill design power calculations, rod mill or any tumbling mill sizing are material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating solids or pulp density, feed size as F80 and maximum chunk size, product size as P80 and maximum and finally the type of circuit open/closed

Read MoreMar 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 . please expalin in a n excel sheet to calcualte the same. thanks. sidhant. reply

Read Moremills with the rod mill and ball mill laboratory work indices. Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an extra amount of nes present being ﬁ ﬁ ner than 650 μm. These ﬁ nes proceed to the ball mill improving the ball mill efﬁ ciency. Also, the plotted rod mill P80 value, as shown in Figure 1, is 2900

Read MoreSolids in the Mill Slurry Balls Slurry Net Total Gross Total Losses Volume, above Balls Interstitial Ball Mill Charge Weight, tons Density Apparent Slurry Filling, Base Case Example Mill Speed Overfilling BOND'S LAW APPLICATION Conventional Ball Mill Sizing Feed Size, F80, microns Product Size, P80, microns Specific Energy, kWh/ton Power

Read MoreMar 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 . please expalin in a n excel sheet to calcualte the same. thanks. sidhant. reply

Read Morefactors for feed size and pebble ing are applied to the AG/SAG specific energy, as well as specific crush energy adjustment from 1.7 mm to the mill transfer size T 80 using Bonds Law Starkey Larbi, 2012. The Bond equation is used to calculate ball mill specific energy from T

Read MoreSolids in the Mill Slurry Balls Slurry Net Total Gross Total Losses Volume, above Balls Interstitial Ball Mill Charge Weight, tons Density Apparent Slurry Filling, Base Case Example Mill Speed Overfilling BOND'S LAW APPLICATION Conventional Ball Mill Sizing Feed Size, F80, microns Product Size, P80, microns Specific Energy, kWh/ton Power

Read MoreWhat Do We Do? GMC has formed a production system integrating R D, production and sales of high pressure mills and after sales service. The high pressure mill equipment produced by Shibang Industrial mainly includes the MTW European version of the trapezoidal mill, the SCM ultra fine powder mill, the Raymond mill, the MTM medium speed trapezoid mill, the LM series vertical mill, and the T130X.

Read Morecharacteristics of the ball mill discharge. Considering the Bond energy law and the correction factors by Rolland, the total specific energy E req requiredminution of mineral from the initial size F 80 coarse crushing discharge to the final size P 80 ball milling dis charge in the conventional circuit is found as follows: E req = 4

Read More2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL MILL SCALEUP Ball mill scale up Bonds LawData: zBond work index w i zFeed D f and product d size both 80 cumulative passing Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions from Tables or charts

Read Moremill was measured using a purpose built power meter to facilitate the calculation of specific grinding energy. Results Table I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS. The concentrate weight recovery was in the order of 5060 . Furthermore it may be

Read Morethe milling process takes place during rotation as a result of the transfer ofic energy of the moving grinding media into the grinding product. The design of a ball mill can vary significantly depending on the size, the equipment used to load the starting material feeders, and

Read MoreThe bigger ball in relation to the optimal one will have an excess energy, and consequently, the smaller ball mill has less energy necessary for grinding. In both cases, the specific power consumption increases and the grinding capacity decreases Concha et al. 1992 Katubilwa and Moys, 2009 Erdem and Ergun, 2009.

Read MoreFeb 26, 2017· Calculation of unknown parameters of flow 9 outlet regrind ball mill Known parameter: o Water specific gravity. In the excel cell K15 water specific gravity, type number 1000.

Read MoreBond/Barratt Specific Energy Consumption SABC Model. This is a SAG or AG mill plus ball mill model that estimates the overall circuit specific energy consumption using the classical Bond work index equation for multi stage crushing and single stage ball milling E ssbm including Rowland efficiency factors.The circuit E total is equal to the E ssbm plus an inefficiency factor CF related to

Read MoreDec 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 to be fed 100 TPH of a

Read MoreHammer crusher calculation xls hammer crusher calculation excel spreadsheetcrusher south africa excel sheets for stone crushing plants spreadsheets will shorten quotation format in excel for the quote crushing service and support excel sheet for limestone crusher load calculations ecap Live Chat hammer ball mill calculation excel spreadsheet.

Read MoreBond/Barratt Specific Energy Consumption SABC Model. This is a SAG or AG mill plus ball mill model that estimates the overall circuit specific energy consumption using the classical Bond work index equation for multi stage crushing and single stage ball milling E ssbm including Rowland efficiency factors.The circuit E total is equal to the E ssbm plus an inefficiency factor CF related to

Read More2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL MILL SCALEUP Ball mill scale up Bonds LawData: zBond work index w i zFeed D f and product d size both 80 cumulative passing Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions from Tables or charts

Read Morethe ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction. Hence from equation 7, to crush to the ball mill circuit feed size x. 2 in open circuit requires specific energy equivalent to: f x f x 2. 1 W c ic. 1.19* 4 2 M x x. 1 10 For closed circuit crushing the specific

Read More A Total Apparent Volumetric Charge Filling including balls and excess slurry on top of the ball charge, plus the interstitial voids in between the balls expressed as a percentage of internal mill volume inside liners. B Overflow Discharge Mills operating at low ball fillings slurry may accumulate on top of the ball charge causing, the Total Charge Filling Level to

Read MoreJan 01, 1989· International Journal of Mineral Processing, 25 1989 41 46 41 Elsevier Science Publishers B.V., Amsterdam Printed in The Netherlands Calculation of Energy Required for Grinding in a Ball Mill N.M. MAGDALINOVIC University of Belgrade, Technical Faculty at Bor, 19210 Bor S.F.R. Yugoslavia Received June 9, 1987 accepted after revision March 7, 1988 ABSTRACT

Read MoreJan 01, 1989· International Journal of Mineral Processing, 25 1989 41 46 41 Elsevier Science Publishers B.V., Amsterdam Printed in The Netherlands Calculation of Energy Required for Grinding in a Ball Mill N.M. MAGDALINOVIC University of Belgrade, Technical Faculty at Bor, 19210 Bor S.F.R. Yugoslavia Received June 9, 1987 accepted after revision March 7, 1988 ABSTRACT

Read Moreball mill specific energy calculator xls The Gulin product line, consisting of more than 30 machines, sets the standard for our industry. We plan to help you meet your needs with our equipment, with our distribution and product support system, and

Read Morethe milling process takes place during rotation as a result of the transfer ofic energy of the moving grinding media into the grinding product. The design of a ball mill can vary significantly depending on the size, the equipment used to load the starting material feeders, and

Read Moremills with the rod mill and ball mill laboratory work indices. Note, in Figure. 1, that the rod mill product slope is less than 0.5 due to an extra amount of nes present being ﬁ ﬁ ner than 650 μm. These ﬁ nes proceed to the ball mill improving the ball mill efﬁ ciency. Also, the plotted rod mill P80 value, as shown in Figure 1, is 2900

Read MoreNov 01, 2002· If the specific energy consumed in the ball millpared with that for single particle cleavage Shand, 1961a, Shand, 1961b, the efficiency of the balles out to be less than 0.2 . Whereas, if the results for ball millingpared with Bergstrom's results for single particle breakagepression in gelatin, the ball mill

Read MoreTheminution Specific Energy window at the top of the page gives the specific energy for the entire circuit. It is made up of the sum of any crusher/HPGR net specific energies plus the tumbling mill circuit specific energy at pinion. The associated 95 confidence levels are also shown

Read More