ball mill work index calculation xls

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  • Ball Mill Design/Power Calculation

    Jun 19, 2015· 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 How to Size a Ball Mill -Design Calculator & Formula,May 15, 2015· The parameter Wi, known as the work index of the ore, is obtained from batch bench tests first devised by Bond (1961). The power calculated on using equation 1, (Bond, 1961; Rowland and Kjos, 1978), relates to: 1) Rod milling a rod mill with

  • ball mill operatng work index calculation

    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. Appli ion of Operating Work Indices in Autogenous Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 Table 1.ball mill work index calculation,ball mill work index calculation xls. Ball Mill Design/Power Calculation. 2020-6-25 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).get price

  • ball mill sizing calculations spreadsheet

    Ball mill calculation xls Henan Mining Machinery Co Ltd. Ball Mill Design Power Calculation 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 sizeMODELING THE SPECIFIC GRINDING ENERGY AND BALL-MILL ,21 CONCLUSIONS Continued In the present work, equations were also derived, giving: zthe ball-mill power drawP as a function of its dimensions: internal mill diameter D and length L, zthe ball-mill power drawP as a function of the feed D f (mm) and the product size d (mm), the Bond work index w i (kWh/short ton) and the mill throughput T (short ton/h), zthe ball-mill dimensions (D and L), when

  • Ball charges calculators thecementgrindingoffice

    - 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:USING THE SMC TEST® TO PREDICT COMMINUTION CIRCUIT ,However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie 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

  • Application of Operating Work Indices in Autogenous

    Ball Mill Wio, BWio 8.6 Circuit Wio, OWio 14.6 Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect onball mill operatng work index calculation,Ball mill operatng work index effeciency ball mill work index calculation xls sjarelke ball mill operatng work index calculation use this online formula to calculate a ball mill, rod mill or sag mill operating work index a bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated .get price.

  • ball mill operatng work index calculation

    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. Appli ion of Operating Work Indices in Autogenous Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 Table 1.ball mill calculation xls for cement plant mining world,mill power calculations filetype xls iqsa.co.za. ball mill volume calculation xls Fruitful Mining. ball mill volume calculation xls. Posted at:January 10, 2013 ton/m3 1.86 m3 7+ Documents Related to "CALCULATE BALL MILL POWER

  • MODELING THE SPECIFIC GRINDING ENERGY AND BALL

    21 CONCLUSIONS Continued In the present work, equations were also derived, giving: zthe ball-mill power drawP as a function of its dimensions: internal mill diameter D and length L, zthe ball-mill power drawP as a function of the feed D f (mm) and the product size d (mm), the Bond work index w i (kWh/short ton) and the mill throughput T (short ton/h), zthe ball-mill dimensions (D and L), whenSPECIFIC COMMINUTION ENERGY SMC Testing,= Bond laboratory ball work index (kWh/tonne) P. 1 = closing screen size in microns . Gbp = net grams of screen undersize per mill revolution . P = 80% passing size of the product in microns . F = 80% passing size of the feed in microns . Circuit Equipment Configurations Although the model can be used for a very wide range of

  • USING THE SMC TEST® TO PREDICT COMMINUTION

    However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie 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 Chapter M MODELLING, SIMULATION, OPTIMIZATION,grate. The load in the mill is calculated from the mill dimensions and the average residence time is calculated as the ratio of the load to the throughput. Water can be added directly to the mill feed at a pre-specified rate or the simulator will calculate the water addition rate that is required to

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

    For overflow ball mills, the charge should not exceed 45% of the mill volume . For grate discharge mills, the charge should occupy about 50% of the mill volume . Bond developed a relationship that can be used to determine the percent charge by volume as a function of the vertical height above the charge, He, and the radius of the mill, R, i.e.,(PDF) A quick method for bond work index approximate value,The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrial

  • Pontificia Universidad Católica de Chile

    The Bond_Op. Work Index spreadsheet was designed to estimate the Operational Work Index of a given grinding installation of known dimensions and operating conditions, based on the traditional Bond's Law and the Hogg & Fuersteneau Power Model (see Mill Power_Ball Mills spreadsheet for further details on such model).A Method of C alculating Autogenous/ Semi-Autogenous,rod mill work index has not been de ned as yet. The ball fi mill work index is con rmed at 16 kWh/t. The operating fi work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high ineffi ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is

  • Excel Sheet For Ball Mill Calculations

    You can also perform table tennis ball calculations using my Table Tennis Ball Speed Calculator or my Ball Speed Calculator. I used the Excel(tm) spreadsheet to calculate an average speed of 58.9 mph. Read more. What size stepper motor do I-need. mycncuk Bond Rod Mill, Ball Mill, and Crushing Work Index tests have been studied forball mill operatng work index calculation,kolkata ball mill work index calculation xls. Calculate a Mill s Operating Work Index. Use this online formula to calculate a Ball Mill Rod Mill or SAG Mill Operating Work Index Based on Fred Bond s work you can estimate the energy used into your grinding circuit This is the most accurate and informative method but much of the data necessary

  • Pontificia Universidad Católica de Chile

    The Bond_Op. Work Index spreadsheet was designed to estimate the Operational Work Index of a given grinding installation of known dimensions and operating conditions, based on the traditional Bond's Law and the Hogg & Fuersteneau Power Model (see Mill Power_Ball Mills spreadsheet for further details on such model).ball mill operatng work index calculation,kolkata ball mill work index calculation xls. Calculate a Mill s Operating Work Index. Use this online formula to calculate a Ball Mill Rod Mill or SAG Mill Operating Work Index Based on Fred Bond s work you can estimate the energy used into your grinding circuit This is the most accurate and informative method but much of the data necessary

  • O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE

    10 mm), the crushing work index SWI is applicable; for me-dium size particles (from 100 mm to 2100 μm) — rod milling work index RWI; for finer particles — ball milling work index BWI (Table). These indexes are readily obtained using the special-purpose laboratory equipment (Fig. 1). Finding the total specific energy consumptionUSING THE SMC TEST® TO PREDICT COMMINUTION ,However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie 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

  • 20150505 Bond Efficiency-GMG-ICE-v1-r04 Determining the

    WioACT Actual Operating Bond Work Index determined from measurements on the circuit (kWh/t) WiRM Bond Rod Mill Test Work Index (kWh/t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at the drive pinions. 3.KEYWORDS Work Index, Work Index Efficiency, Bond Work Index testingSPECIFIC COMMINUTION ENERGY SMC Testing,= Bond laboratory ball work index (kWh/tonne) P. 1 = closing screen size in microns . Gbp = net grams of screen undersize per mill revolution . P = 80% passing size of the product in microns . F = 80% passing size of the feed in microns . Circuit Equipment Configurations Although the model can be used for a very wide range of

  • MODULE #5: FUNCTIONAL PERFOMANCE OF BALL MILLING

    • Define and calculate the grinding efficiency of the ball mill in a ball mill circuit. • Relate overall ball mill circuit output and circuit efficiency to specific design and operating variables. • Compare sets of circuit survey data in terms of the elements of the functional performance equation. The prerequisite module to this one isBond Work Index Tests Grinding Solutions Ltd,The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits The test requires a minimum of 10kg of sample that has been stage-crushed to 100% passing size of <3.35 mm. Any screen size below 600µm can be used for the testwork depending on your requirements. Bond Rod Mill Grindability Test

  • (PDF) A quick method for bond work index approximate value

    The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrialINVESTIGATION OF PARTICLE BREAKAGE PARAMETERS IN ,of materials ground in ball mills by linearized form of the size-discretized batch grinding equation using single parameter instead of dealing with two parameters which may not be independent of each other. Keywords: Bond ball mill, locked-cycle grinding, breakage parameters.

  • Ball Mill Design/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 distribution of 80% passing ¼ inch (6350.20150821 Morrell Method-GMG-ICE-v01-r01 Morrell method ,Wi Bond Work Index Ws Specific energy correction for size distribution (kWh/t) WiBM Bond Ball Mill Test Work Index (kWh/t) 3. KEYWORDS Autogenous Grinding (AG), Ball mill, Bond Work Index (Wi), Comminution circuit, High Pressure Grinding Rolls (HPGRs), Rod mill, Semi-Autogenous Grinding (SAG), Spe-cific energy (W) 4. INTRODUCTION AND BACKGROUND

  • Operating work index is not the specific energy consumption

    Oct 24, 2018· The work index can either be measured in the laboratory (the Bond ball mill work index determination is a common example) or it can be calculated from the operating performance of Bond Work Index an overview ScienceDirect Topics,The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh), thus determining the ball mill work index (WiB or BWi).