sat ball mill sizing with bond method work index base

  • SPECIFIC COMMINUTION ENERGYSMC 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 ConfigurationsAlthough the model can be used for a very wide range of

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  • Work Index Determination for High Pressure Grinding Rolls

    cycle test akin to the Bond Ball mill work . index determination. The first cycle starts with minus 6 mesh ore removed since it is believed that the fines content can fill most of the voids allowing little room for rock breakage and piston movement. Without adequate piston

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  • ball milling method pdfKnock Heavy Machinery

    ball milling method pdf Jun 15 2012· Steps inball milling method 1. As the name suggests theball milling methodconsists of balls and amillchamber. Therefore over all aball millcontains a stainless steel container and many small iron hardened steel silicon carbide or tungsten carbide balls are made to rotate inside amill

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  • Model Morrell SS SAGSAGMILLING

    This is a SAG or AG mill model that estimates the specific energy consumption (E SAG) using the equations of Morrell (2004). Testwork Required. The SMC™ test stored in the "DWT" testwork table (SMC is a Drop Weight Test). Bond ball mill work index. The method requires all the parameters of the ball mill work index test to be filled in

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  • SPECIFIC COMMINUTION ENERGYSMC 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 ConfigurationsAlthough the model can be used for a very wide range of

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  • ball and sag mill circuits Djibouti

    ball and sag mill circuits Djibouti. As a leading global manufacturer of crushing equipment milling equipment dressing equipment drying equipment and briquette equipment etc. we offer advanced rational solutions for any size-reduction requirements including quarry aggregate grinding production and complete plant plan.

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  • GMSG Guideline Determining the Bond Efficiency of

    Jan 01 2016 · "Use of the Bond Work Index to size industrial grinding equipment was widely known. Bond also described its application for measuring grinding circuit efficiency. Bond Work Index efficiency has been widely used by industry but until now without concise standard methods or a

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  • Amdel Analytical Laboratories . . Amdel A-Z

    Bond Ball and Rod Mill Work Indices The work index is a measure of the resistance of an ore to grinding. It is used to calculate mill power and the size of grinding media required. The ball and rod mill work indices are determined by cyclic grinding tests in standard mills with standard grinding charges.

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  • Cement Grinding Optimization

    Jul 31 2014 · The following modified Bond equation was proposed for crushing (Magdalinovic 1990) Wc = cP A Wi ( cP 10cF 10 ) (8) where Wcis energy consumed for clinker crushing (kWh/t) Wiis Bond ball mill work index (kWh/t) Pc -is sieve size passing 80 of the clinker after crushing (µm) Fcis sieve size passing 80 of the clinker before

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  • SAGMILLING . . Articles

    Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a closing mesh to give a P80 close to desired grind size.

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  • grinding the liver with sand and naoh

    Home Products Solution Material Final Size Capacity News Application Case About us Inquirypurpose of grinding liver with sand and tcaDescription Purpose Goff Grinding Mill In Sa (usually 100 mg) from GAK was taken immediately after grinding and then

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  • Characteristics of Mae Moh lignite Hardgrove grindability

    For the simplified Bond method an approximate work index may be determined by running a batch dry-grinding test. The test was performed using a 25 cm diameter tumbling ball mill with material hold-up of about 10 media loading of about 25 and a unit interstitial filling. Two kilograms of the 5 mm lignite samples were ball-milled for 10

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  • A Method of Calculating Autogenous/Semi-Autogenous

    In 1991 the Canadians developed the SAGPower Index (SPI) test using 2 kg of material in a 300 mm diameter mill. This test has been further developed by Starkey Hindstrom and Orser (2006). This test now includes a Bond Ball mill work index test. The Macpherson test is

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  • Bond Work Index Equation For Jaw Crusher

    Bond Work Index Cone Crusher. a secondary crusher is a jaw crusher cone crusher and impact crusher. type of fine grinder is the ball mill the power predictions for ball mills typically use the following form of the bond equation fred bond ball mill power draw equations fred bond ball mill power draw ball mill can be either wet or d.

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  • Work Index Determination for High Pressure Grinding Rolls

    cycle test akin to the Bond Ball mill work . index determination. The first cycle starts with minus 6 mesh ore removed since it is believed that the fines content can fill most of the voids allowing little room for rock breakage and piston movement. Without adequate piston

    Get Price
  • Bond Work Index Procedure and Method

    This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge.. Below describes in general terms the Bond Work Index Procedure used by a Professional Metallurgical Testing Laboratory.

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  • A new approach to Bond grindability and work index

    W i =1.1 44.5 P i 0.23 G bg 0.82 10/ P 80 − 10/ F 80 W i is the work index (kwh/t) P i screen size at which the test is performed (106 μm) G bg Bond s standard ball mill grindability net weight of ball mill product passing sieve size P i produced per mill revolution (g/rev) P 80 sieve opening which 80 of the product passes (μm

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  • SME 2009 Impact on Grinding Mill Design and Recent New

    The corresponding Bond Ball Mill Work Index data from the same tests is plotted in Figure 2. Fig. 2Bond Ball Mill Work Index Vs Cum. Dist of Samples Tested 0 10 20 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 Bond Ball Mill Work Index kWh/t d . Soft Ore Hard Ore

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  • Kinetic grinding test approach to estimate the ball mill

    A quick method for the Bond work index approximate value determination which is based on the first order grinding kinetics is presented in this paper. A new size laboratory ball mill for

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  • Standard Bond Ball Mill Grindability Test Method-Procedure

    Here is the old Allis-Chalmers Bond Work Index Grindability Test Procedure. The standard feed is prepared by stage crushing to all passing a 6 mesh sieve but finer feed can be used when necessary. It is screen analyzed and packed by shaking in a 1000-cc graduated cylinder and the weight of 700 cc is placed in the mill and ground dry at 250 per cent circulating load. The mill is 12 in. x 12

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  • Size Reduction and Energy RequirementScienceDirect

    Jan 01 2016 · A change in transfer size can be accommodated between 0.4 and 3.5 mm by an adjustment using the Bond ball mill work index. Starkey found that there was no observable difference in the energy consumption in a SAG mill or ball mill in this size range. This method of estimating mill power requirement has been successful in recent years. 3.4.6.

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  • SME 2009 Impact on Grinding Mill Design and Recent New

    The corresponding Bond Ball Mill Work Index data from the same tests is plotted in Figure 2. Fig. 2Bond Ball Mill Work Index Vs Cum. Dist of Samples Tested 0 10 20 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 Bond Ball Mill Work Index kWh/t d . Soft Ore Hard Ore

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  • Model Morrell SS SAGSAGMILLING

    This is a SAG or AG mill model that estimates the specific energy consumption (E SAG) using the equations of Morrell (2004). Testwork Required. The SMC™ test stored in the "DWT" testwork table (SMC is a Drop Weight Test). Bond ball mill work index. The method requires all the parameters of the ball mill work index test to be filled in

    Get Price
  • SAGDesign Case Studies

    Where Wi is the Bond Ball Mill Work Index P 80 is the comminution step product size F 80 is the comminution step feed size Because there is no difference in energy consumption in the SAG mill and the Ball mill in the above noted adjustment size range the T80 can be adjusted to give a desired power split between the SAG mill and the Ball mill.

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  • Technical InformationSMC Testing

    However if the sample is to be prepared by cutting with a diamond saw (cut-core method) as little as 5kg is normally sufficient. Also remember that the products from the SMC Test® can be re-used for Bond ball work index testing the SMC Test® being effectively used as a feed preparation step for the Bond ball work index test.

    Get Price
  • Characteristics of Mae Moh lignite Hardgrove grindability

    For the simplified Bond method an approximate work index may be determined by running a batch dry-grinding test. The test was performed using a 25 cm diameter tumbling ball mill with material hold-up of about 10 media loading of about 25 and a unit interstitial filling. Two kilograms of the 5 mm lignite samples were ball-milled for 10

    Get Price
  • Cement Grinding OptimizationLinkedIn SlideShare

    The following modified Bond equation was proposed for crushing (Magdalinovic 1990) Wc = cP A Wi ( cP 10cF 10 ) (8) where Wcis energy consumed for clinker crushing (kWh/t) Wiis Bond ball mill work index (kWh/t) Pc -is sieve size passing 80 of the clinker after crushing (µm) Fcis sieve size passing 80 of the clinker before

    Get Price
  • SME 2009 Impact on Grinding Mill Design and Recent New

    The corresponding Bond Ball Mill Work Index data from the same tests is plotted in Figure 2. Fig. 2Bond Ball Mill Work Index Vs Cum. Dist of Samples Tested 0 10 20 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 Bond Ball Mill Work Index kWh/t d . Soft Ore Hard Ore

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  • CALCULATION OF THE POWER DRAW OF DRY

    Bond ball mill grindability test for overflow wet ball mills. An approach was proposed by Erdem (2002) for dry multi-component cement grinding ball mills using the results of the Bond ball mill grindability test. For all model based methods a reliable method to calculate mill power draw for a

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  • GMSG Guideline Determining the Bond Efficiency of

    Jan 01 2016 · "Use of the Bond Work Index to size industrial grinding equipment was widely known. Bond also described its application for measuring grinding circuit efficiency. Bond Work Index efficiency has been widely used by industry but until now without concise standard methods or a

    Get Price
  • Size Reduction and Energy RequirementScienceDirect

    Jan 01 2016 · A change in transfer size can be accommodated between 0.4 and 3.5 mm by an adjustment using the Bond ball mill work index. Starkey found that there was no observable difference in the energy consumption in a SAG mill or ball mill in this size range. This method of estimating mill power requirement has been successful in recent years. 3.4.6.

    Get Price
  • Technical InformationSMC Testing

    However if the sample is to be prepared by cutting with a diamond saw (cut-core method) as little as 5kg is normally sufficient. Also remember that the products from the SMC Test® can be re-used for Bond ball work index testing the SMC Test® being effectively used as a feed preparation step for the Bond ball work index test.

    Get Price
  • A Comparison of Test Procedures for Estimating the Bond

    particle size are calculated and the Bond ball work index is then calculated using the standard Bond ball work index formula 𝑊𝑖= 44.5 𝑃0.23·𝑔𝑏𝑝0.82· 10 √𝑃80 · 10 √𝐹80 2 where W i represents the Bond ball work index F 80 and P 80 are the feed and product particle sizes

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  • A Method of Calculating Autogenous/Semi-Autogenous

    In 1991 the Canadians developed the SAGPower Index (SPI) test using 2 kg of material in a 300 mm diameter mill. This test has been further developed by Starkey Hindstrom and Orser (2006). This test now includes a Bond Ball mill work index test. The Macpherson test is

    Get Price
  • ball milling method pdfKnock Heavy Machinery

    ball milling method pdf Jun 15 2012· Steps inball milling method 1. As the name suggests theball milling methodconsists of balls and amillchamber. Therefore over all aball millcontains a stainless steel container and many small iron hardened steel silicon carbide or tungsten carbide balls are made to rotate inside amill

    Get Price
  • Mill (grinding)Wikipedia

    W is the work index measured in a laboratory ball mill (kilowatt-hours per metric or short ton) P 80 is the mill circuit product size in micrometers F 80 is the mill circuit feed size in micrometers. Rod mill. A rotating drum causes friction and attrition between steel rods and ore particles.

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