# Calculation Example Ball Mill Draw Power

### Ball Mill Design/Power Calculation

Ball Mill Power Calculation Example #1. A wet grinding ball mill in 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 microns). The required product size distribution is to be 80% passing 100 mesh (149 microns).

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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 material with a work index of 15 and a size distribution of 80% passing ¼ inch (6350 microns). The required product size distribution is to be 80% passing 100 mesh (149 …

### CALCULATION OF THE POWER DRAW OF DRY …

Calculation of the power draw of dry multi-compartment ball mills 225 The mill load that is the volume of charge in the mill is the principal determinant of power draw. Estimation of the ball load that is mixed with the cement charge is difficult and can be highly erroneous. So direct measurement must be taken for calculation of mill load.

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GROSS POWER CALCULATOR ... Figure 7 shows an example of the balls in a mill after a grind-out. ... Predicted Power Draw (kW) Ball mills

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MODELING THE SPECIFIC GRINDING ENERGY AND BALL-MILL SCALEUP ... Mill Power Draw Calculation ... MILL DIMENSIONS (D x L) Example. 20

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Ballmill Design - Power Draw. Application: Mineral Processing. Format ... 5 ; Max Ball Dia . 20 cm. Ball mill design equations provided by David Martin Menne.

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Ball Mill Performance & Efficiency ... kWh/TC E1 New specific power E 32.3 n Mill exponent for close ckt = 1. ... Documents Similar To Ball Mill Calculations.

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Ball Mill Performance & Efficiency ... kWh/TC E1 New specific power E 32.3 n Mill exponent for close ckt = 1. ... Documents Similar To Ball Mill Calculations.

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The maximum power draw in ball mill is when ball bed is 35-40 % by volume in whole empty mill volume. Considering that ball bed has a porosity of 40 %, the actual ball volume is considered to be 21-24 % of the empty mill. Now, in order to get an efficient milling action, 80-110 % of the pores in the ball bed must be filled with the actual …

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CALCULATION OF THE POWER DRAW OF DRY MULTI–COMPARTMENT BALL MILLS. the calculation steps a worked example is given for a cement ball mill.To execute the calculation certain design and operating …

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### Calculation Of Cement Ball Mill Capacity

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Wet Ball Mill Power Draw (Bond) For wet ball mills, Bond expressed power draw as a function of the total mass of media:P↓M / M↓B – 15.6Φ↓V (1 – 0.937 J↓B) D↑0.3 (1 – 0.1 / 2↑9 – 10Φ↓C) kW/t M↓B = πD↑2 / 4 J↓B ρ↓B (1 – Φ) The bed porosity is typically in the range of 35% to 40%.

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### Ball mil design calculation? | Yahoo Answers

Mar 31, 2008· Modern installations draw power of 2-10 MW. The power (in kW) required to turn a ball mill is approximated by: P = 0.285 d (1.073-j) m n where d is the internal diameter in metres, j is the fraction of the mill volume occupied by media, m is the total mass of media in the mill, in tonnes, and n is the mill speed, rpm.

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### powerdraw calculations in dry milling

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