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Ball mill power calculation

Dec 12, 2016 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

  • GROSS POWER CALCULATOR - SMC Testing

    GROSS POWER CALCULATOR - SMC Testing

    base are up to 40ft in diameter and ball mills are up to 26ft in diameter. The measured gross power draws from these mills are plotted against the model predictions in Figure 1. As indicated by this data base the accuracy of the model (1 standard deviation) is 4.6%. How to Use the Model . Inputs to the model are made in three windows, viz: Mill

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  • CALCULATION OF THE POWER DRAW OF DRY

    CALCULATION OF THE POWER DRAW OF DRY

    of the Bond ball mill grindability test. For all model based methods, a reliable method to calculate mill power draw for a given mill is required for the calculation of power draw. Morrell (1996) proposed a mathematical model for autogenous, semi-autogenous and ball mills which is based on the motion of grinding charge inside the mill

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  • Ball mill media optimization - Metcom Tech

    Ball mill media optimization - Metcom Tech

    mill test, the calculation method of the mill energy specific cumulative grinding rates is shown by the following example. Using plant data, the value of E is the specific energy input to the solid material as it passes through the plant mill (the mill power draw divided by the mill

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  • MODELING THE SPECIFIC GRINDING ENERGY AND BALL

    MODELING THE SPECIFIC GRINDING ENERGY AND BALL

    Ball mill power draw predicted from the Denver slide rule, kW 0 200 400 600 Calculated ball-mill power draw from the m odel derived, kW Data compared Line y=x Fig. 2. Comparison of the ball mill power draw from the Denver slide rule and the proposed model. Dashed line corresponds to y=x

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  • Excel Sheet For Ball Mill Calculations

    Excel Sheet For Ball Mill Calculations

    Fuersteneau Power Model (see Mill Power_Ball Mills spreadsheet for further ... data (whenever available) from back-calculation of the first equation above. ... 4, Conventional Ball Mill

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  • BALL MILL POWER - Page 1 of 2

    BALL MILL POWER - Page 1 of 2

    Nov 12, 2013 THE SUPPLIER HAS GIVEN 28% GRINDING MEDIA FILLING , WITH SHAFT POWER 2270 KW ONLY. BALL MILL SIZE IS 4.4*11 M. GRINDING MEDIA SIZE IS MAX 30MM . IT IS A MONOCHAMBER MILL DESIGNED TO GRIND THE ROLLER PRESS PRODUCT. IF WE CALCULATE THE SHAFT POWER WITH 28% FILLING IT COMES TO MORE THAN 2600 KW WITH 210 T

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  • Optimization of mill performance by using

    Optimization of mill performance by using

    Mill power Usually, plant operators use mill power readings as an indicator of ball filling degree and, often, try to keep it at the maximum level. It is well known that the mill absorbed power depends on operating parameters other than ball level, such as pulp density and liner configuration. Figure 2 shows that there is no linear relation between

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  • MODULE #5: FUNCTIONAL PERFOMANCE OF BALL

    MODULE #5: FUNCTIONAL PERFOMANCE OF BALL

    Effective mill power draw 24 Ball mill specific grinding rate 29 Ball mill grinding efficiency 33 Progress Review 1 39 PART II - Functional Performance Analysis 43 Using the functional performance equation 43 Functional performance efficiency 47 Relating design and operating variables to grinding, classification, and circuit efficiencies 53

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  • CALCULATION OF BALL MILL GRINDING EFFICIENCY

    CALCULATION OF BALL MILL GRINDING EFFICIENCY

    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 n excel sheet to calcualte the same. thanks. sidhant. reply

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  • Ball Mill - SlideShare

    Ball Mill - SlideShare

    Nov 18, 2008 2. Basic principle Ball mill is generally used to grind material 1/4 inch and finer, down to the particle size of 20 to 75 microns. To achieve a reasonable efficiency with ball mills, they must be operated in a closed system. There is a specific operating speed for most efficient grinding

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  • Calculation of energy required for grinding in a ball mill

    Calculation of energy required for grinding in a ball mill

    The grinding-product size, P, in a Bond ball mill, which is given by the aperture size which passes 80% of the grinding product as a function of the aperture size of the test screen Pk, can be expressed by the formula P= P k K 2. These functions for G and P enable us to calculate the value of Wi for any other size of grinding product if we know

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  • A Method of C alculating Autogenous/ Semi

    A Method of C alculating Autogenous/ Semi

    mills 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

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  • Ball Mill Charge Calculation

    Ball Mill Charge Calculation

    how to calculate charge in ball mill Description : Calculations for mill motor power, mill speed and media charge L = Internal length of the mill in cms. after lining. how to calculate sag mill ball charge BINQ Mining. Jan 01, 2013 TechnoMine Services, LLC. mill charge and speed

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  • Ball Mill Design/Power Calculation

    Ball Mill Design/Power Calculation

    Jun 19, 2015 The 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

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  • Ball Mill Parameter Selection & Calculation - Power

    Ball Mill Parameter Selection & Calculation - Power

    Aug 30, 2019 1 Calculation of ball mill capacity. The production capacity of the ball mill is determined by the amount of material required to be ground, and it must have a certain margin when designing and selecting. There are many factors affecting the production capacity of the ball mill, in addition to the nature of the material (grain size, hardness, density, temperature and humidity), the degree of

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  • How to Size a Ball Mill -Design Calculator & Formula

    How to Size a Ball Mill -Design Calculator & Formula

    May 15, 2015 The power calculated on using equation 1, (Bond, 1961; Rowland and Kjos, 1978), relates to: 1) Rod milling – a rod mill with a diameter of 2.44 meters, inside new liners, grinding wet in open circuit. 2) Ball milling – a ball mill with a diameter

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  • AMIT 135: Lesson 7 Ball Mills & Circuits – Mining Mill

    AMIT 135: Lesson 7 Ball Mills & Circuits – Mining Mill

    The ball size factor, F B, is added to the mall shaft power for mill sizes greater than 3.3 meters:F †“B – 1.102 (d †“max – 12.5D / 50.8) kW/t Other Rowland & Kjos Power Draw Corrections

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  • TECHNICAL NOTES 8 GRINDING R. P. King

    TECHNICAL NOTES 8 GRINDING R. P. King

    mill is the energy consumption. The power supplied to the mill is used primarily to lift the load (medium and charge). Additional power is required to keep the mill rotating. 8.1.3 Power drawn by ball, semi-autogenous and autogenous mills A simplified picture of the mill load is shown in Figure 8.3 Ad this can be used to establish the essential

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