You now have the unit capacity. Then take the volumetric feed rate of the new ore per time. Divide the unit capacity by the feed rate and you have the nominal retention time. Say your unit capacity is1/2 cubic meter and you are feeding 6 cubic meters per hour, yourretention time would be about 5 minutes.
Time Of Grinding In A Ball Mill Figure. 2009-7-30 ·Figure8.6. The total volume inside themillis given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in themillincluding the media which may be steel ballsin a ball mill, or large lumps of ore in an autogenousmillor a mixture in a semi-autogenousmill,
Get DetailsInGrinding, selecting (calculate) the correct or optimumballsize that allows for the best and optimum/ideal or target grind size to be achieved by yourball millis an important thing for a Mineral Processing Engineer AKA Metallurgist to do. Often, theballused inball millsis oversize “just in case”.
Get DetailsThe ball mill is a tumbling mill that uses steel balls as the grinding media. The length of the cylindrical shell is usually 1–1.5 times the shell diameter ( Figure 8.11). The feed can be dry, with less than 3% moisture to minimize ball coating, or slurry containing 20–40% water by weight.
Get Detailshow tocalculate ball millresidencetime.calculateresidencetimethroughball mill.calculateresidencetimethroughball mill. as a leading global manufacturer of crushing,grindingand mining equipments, we offer advanced, reasonable solutions for any size reduction requirements including quarry, aggregate, and different kinds of …
Get DetailsAug 11, 2010· Re: MATERIAL RETENTIONTIME IN A BALL MILL& VRM. You could do that by measuring the material flowrate Q[tons/h] through themillas well as the quantity M[tons] of material that accumulates within themill. The retentiontime, also called residencetime, is the ratio (M/Q) [h] .
Get DetailsBall Mill. Theball millis a tumblingmillthat uses steel balls as thegrindingmedia. The length of the cylindrical shell is usually 1–1.5 times the shell diameter (Figure8.11).The feed can be dry, with less than 3% moisture to minimizeballcoating, or slurry containing 20–40% water by weight.
Get DetailsPage 1BallMilling Theory . 18 ·Figure2 shows the activegrindingarea for an optimally chargedball mill. As the drum rotates, the media should ideally form a sloping pile that maintains a 45 degree angle so that there is a constant cascading of media at the surface.
Get DetailsInGrinding, selecting (calculate) the correct or optimumballsize that allows for the best and optimum/ideal or target grind size to be achieved by yourball millis an important thing for a Mineral Processing Engineer AKA Metallurgist to do. Often, theballused inball millsis oversize “just in case”.
Get DetailsMay 22, 2019· Theball millconsists of a metal cylinder and aball. The working principle is that when the cylinder is rotated, thegrindingbody (ball) and the object to be polished (material) installed in the cylinder are rotated by the cylinder under the action of friction and centrifugal force.
Get DetailsTheball millis a tumblingmillthat uses steel balls as thegrindingmedia. The length of the cylindrical shell is usually 1–1.5 times the shell diameter (Figure8.11).The feed can be dry, with less than 3% moisture to minimizeballcoating, or slurry containing 20–40% water by weight.
Get Detailshow tocalculate ball millresidencetime.calculateresidencetimethroughball mill.calculateresidencetimethroughball mill. as a leading global manufacturer of crushing,grindingand mining equipments, we offer advanced, reasonable solutions for any size reduction requirements including quarry, aggregate, and different kinds of …
Get DetailsDec 08, 2009· Re: howto estimate the wear rate for Ball mill. Most practical way to by measuring empty height and calculating the % volumetric fillingof grindingmedia.Alternative way to make track ofmillmain drive kW consumption reduction and add makeup …
Get DetailsBallsize,grinding timeand solid content ofball millwere selected as model variables. The results indicated that the optimum values of responses from model predictions were very close to ...
Get DetailsCalculateand SelectBall Mill BallSize for OptimumGrinding.Calculateand SelectBall Mill BallSize for OptimumGrinding.Based on his work, this formula can be derived forballdiameter sizing and selection: Dm <= 6 log dk * d^0.5 where D m = the diameter of the singlesized balls in mm.d = the diameter of the largest chunks of ore in the ...
Get DetailsBall MillPower Calculation Example. A wetgrinding ball millin closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of 80% passing ¼ inch (6350 ...
Get DetailsApr 11, 2017· It is done in order to accurately definition thegrinding ballmass during measuringin a ball milland exclude themilloverloading withgrindingballs possibility There are two methods for determining thegrindingballs bulk weight in amill: Method with completegrindingmedia discharge from themillinner drum.
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