### Modified Bond Ball Mill Work Index TestWhat is this

2021 8 5 a modified Bond ball mill procedure Mod Bond was developed by MinnovEX Technologies now SGS which requires 1.2kg of sample crushed at minus 3.35mm The 1.2kg charge is milled with the standard Bond ball mill for a set time A particle size analysis is performed on the feed and ground product and a modified work index is calculated using a

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Bond Ball Mill Work Inde Da Ase Jktech From Sri Lanka Bond ball mill work index da ase jktech jktech a bond ball mill work index may also beused in the simulation and optimisation of existing mills and the associated grindingcircuits sample requirements a minimum of

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2021 1 14 standard Bond crushing and rod mill work indices abrasion indices and by Dawson for Bond Ball Mill Work Index tests using crushed feed and Standard Autogenous Grinding Design SAGDesign Tests patented by Outokumpu See reference 8 below The comparison of these results gives context to how the various measurements relate to each

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Grindability as indicated by the bond ball mill work index BWi ranged from 10โ35 kWh/t with the majority between 15 and 27 kWh/t No clear relationships in terms A b and/or BWi was identified with geological aspects logged from the drill core such as weathering lithology alteration alteration intensity veining or combinations of these.

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2021 8 19 SMC Data Processing The results from conducting the SMC Test are used to determine the drop weight index DWi which is a measure of the strength of the rock as well as the comminution indices Mia Mih and Mic In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of

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2015 11 22 The Bond ball mill work index Wi BM or BWi conducted from a feed size of approximately 2 mm to a product size on the order of 100 ยตm The Bond rod mill work index Wi RM or RWi conducted from a feed size of approximately 10 mm to a product size on the order of 1 mm The Bond crushing impact work index Wi C CWi LEIT or IWi conducted

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A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill s and the associated grinding circuit s Sample Requirements A minimum of 10 kg of material crushed to nominally minus 10 mm is preferred JKTech would stage crush the sample to minus 3.35 mm as required for the Bond Ball Mill Work Index test feed.

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2016 7 13 DWi and point load index IS50 making it valuable in Mine to mill studies as well For power based calculations the SMC Test also provides the comminution indices Mia Mih and Mic which are routinely reported when a test is carried out see Table 1 below In conjunction with the Bond ball mill work index they can be used to

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JK Bond Ball Mill Test Since its introduction in the 1960s the Bond Ball Mill Work Index BBMWi parameter has been extensively used in predicting ball mill power draw Use of Work Index Along with comminution circuit design the work index parameter is widely used in tracking mill performance Due to the age and lack of controls for the test

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Bond ball mill calculations spreadsheet Henan Mining Bond ball mill calculations spreadsheet educationcare Surprisingly the Bond Ball Mill Wi was 13 kWht for this ore The Bond Rod The introduction of engineering calculations into the SAG ball mill design field will spreadsheet using the T80 to control the required power split.

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Bond ball mill calculations spreadsheet Henan Mining Bond ball mill calculations spreadsheet educationcare Surprisingly the Bond Ball Mill Wi was 13 kWht for this ore The Bond Rod The introduction of engineering calculations into the SAG ball mill design field will spreadsheet using the T80 to control the required power split.

Get Price### Bond Work Indexan overview ScienceDirect Topics

The ability to simulate the Bond work index test also allows examination of truncated ball mill feed size distributions on the work index For grinding circuits where the feed to a ball mill is sent directly to the classifier and the cyclone underflow feeds the ball mill see Figure 3.10 a question arises as to whether this practice will alter the ball mill work index BW i of the material

Get Price### SMC Test Minerals Processing Comminution Testing

2021 8 19 SMC Data Processing The results from conducting the SMC Test are used to determine the drop weight index DWi which is a measure of the strength of the rock as well as the comminution indices Mia Mih and Mic In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of

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2013 8 2 The Bond ball mill work index ranged in value from 14.1 to 18.7 kWh/tonne The Mitchell Zone and Kerr samples had relatively consistent Bond ball mill work indices ranging from about 14 to 15 kWh/tonne On this basis these samples can be considered moderately hard The two Sulphurets samples had Bond ball mill work indices of 16.7 and 18.7

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2016 6 8 particle size are calculated and the Bond ball work index is then calculated using the standard Bond ball work index formula ๐๐= 44.5 ๐0.23 ๐๐๐0.82 10 โ๐80 10 โ๐น80 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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2020 3 24 mill due to differences in the many operating and design variables such as feed size distribution mill dimensions ball load ball size grate/pebble port size trommel aperture and pebble crusher configuration However the SCSE is an effective

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2016 5 2 The Bond Work Test was run in duplicate on each mill for each material The Bond Work Indices from Dr Usman s material were calculated to be

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2020 3 11 Bond ball mill work index test standard pdf 1 introduction a bond ball mill work index test is a standard test for determining the ball mill work index of a sample of ore it was developed by fred bond in 1952 and modified in 1961 jkmrc co 2006this index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy

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Bond Ball Mill Work Index Xsm Bond Ball Mill Work Index Xsm AMIT 135 Lesson 7 Ball Mills Circuits Work Index Bond estimated the amount of wear in terms of kilograms per kWh based on the abrasion index A i.e Wet Ball Mill = kg kWh = 0.16 A i 0.015 0.33 Dry Ball Mill = kg kWh = 0.023A i 0.5 Replacement Ball get price

Get Price### Bond Work Index Formula Equation

2013 7 15 In the standard A C closed circuit ball mill grindability test the work index is found from where Pi is the opening in microns of the sieve mesh tested and Gbp is the net grams of mesh undersize produced per revolution of the 12โณ x 12โณ test ball mill The closed circuit 80 passing size P averages P1/log 20 for all sizes larger than 150 mesh.

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2013 7 15 In the standard A C closed circuit ball mill grindability test the work index is found from where Pi is the opening in microns of the sieve mesh tested and Gbp is the net grams of mesh undersize produced per revolution of the 12โณ x 12โณ test ball mill The closed circuit 80 passing size P averages P1/log 20 for all sizes larger than 150 mesh.

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ores processed in the Bond ball mill were compared wi th the energy predicted from the Bond theory Bond work index and third theory equation Daniel 2006 and 2007 and Shi e t al 2006 .

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bond ball mill work index database jktech randpic JK Bond Ball Mill Test JKTech JK Bond Ball Mill Test Since its introduction in the 1960s the Bond Ball Mill Work Index BBMWi parameter has been extensively used in predicting ball mill power draw Use of Work Index Along with com

Get Price### SMC Test Minerals Processing Comminution Testing

2021 8 19 SMC Data Processing The results from conducting the SMC Test are used to determine the drop weight index DWi which is a measure of the strength of the rock as well as the comminution indices Mia Mih and Mic In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of

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2020 6 1 Ball Mill Bond Work Indexjoelle nails Ball Mill Bond Work Index A bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits sample requirements a minimum of 10 kg of material crushed to nominally minus 10 mm is preferred jktech would stage crush the sample to minus 335 mm as required for the bond ball mill work index

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JKTech is aligned to The University of Queensland s Sustainable Minerals Institute which includes the Julius Kruttschnitt Mineral Research Centre and the WH Bryan Mining and Geology Research Centre This close working relationship gives our team access to cutting edge research and technology from a world leading institute that is committed

Get Price### Bond Work Index Report Matrix House

2017 1 7 The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill 2 Procedure 2.1 Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh 3.35mm from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

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Bond Ball Mill Work Indices All JKTech Power data adjusted The testwork was conducted with โ25 4 mm and โ8 4 mm kimberlitic ores of varying hardness.The Hicom mill s response was

Get Price### Bond Ball Mill Work Inde Da Ase Jktech

2020 3 11 Bond ball mill work index test standard pdf 1 introduction a bond ball mill work index test is a standard test for determining the ball mill work index of a sample of ore it was developed by fred bond in 1952 and modified in 1961 jkmrc co 2006this index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy

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2017 1 7 The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill 2 Procedure 2.1 Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh 3.35mm from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

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Bond Ball Mill Work Hardness Jktech Bond ball mill index test jktech a bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits sample requirements a minimum of 10 kg of material crushed to nominally minus 10 mm is preferred jktech would stage crush the sample to minus.

Get Price### A Comparison of Test Procedures for Estimating the

2016 6 8 particle size are calculated and the Bond ball work index is then calculated using the standard Bond ball work index formula ๐๐= 44.5 ๐0.23 ๐๐๐0.82 10 โ๐80 10 โ๐น80 2 where W i represents the Bond ball work index F 80 and P 80 are the feed and product particle sizes

Get Price### EXTENDED ABSTRACT FOR COMMINUTION 98

2018 2 20 The Bond ball mill rod mill and impact work indices provide industry recognised standards for the determination of ore hardness and competency The JKTech Dropweight test also provides a determination of competency and can be combined with the autoabrasion test to provide parameters for circuit modelling using JKSimmet.

Get Price### Comparative assessment of the Bond Ball Mill Work Index

The article presents the review studies and classification of the existing methods of the Bond Ball Mill Work Index determination The scope of the analysis embraces the methods of Aksani and Sรถnmez Todoroviฤ Berry and Bruce Horst and Bassarear Ahmadi Kapur Gharehgheshlagh Lewis Magdalinovich Karra Smith and Lee Armstrong as well JKTech and Aminpro approaches.

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2021 8 17 In conjunction with the Bond ball mill work index they can be used to accurately predict the overall specific energy requirements of circuits containing AG and SAG mills Ball mills Rod mills Crushers High Pressure Grinding Rolls HPGR .

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2019 6 5 laboratory tests typically Bond ball mill Work Index and SMC test JKDWT A b Bond 1961 Morrell 2004 Due to budgetary constraints this has curtailed the collection of suf๏ฌ cient number of BMWi or A b measurements to allow the inherent variability to be adequately quanti๏ฌ ed for direct

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Bond Ball Mill Work Hardness Jktech Bond method for ball mill work test lab3d bond ball mill work index clinker jul 31 2015 a new approach toward estimating the bond ball mill work index bbwi by keywords work index bond method kinetic grinding test grindability ball mill of different ores and materials such as copper iron and clinkers get price

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The comminution energy size reduction of the Bond Mill and its 0.9956 that the revolutions required in all the Bond Work index mill tests conducted energy based on P1 values and the sample Vickers Hardness correlates with the crushi

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2019 6 5 laboratory tests typically Bond ball mill Work Index and SMC test JKDWT A b Bond 1961 Morrell 2004 Due to budgetary constraints this has curtailed the collection of suf๏ฌ cient number of BMWi or A b measurements to allow the inherent variability to be adequately quanti๏ฌ ed for direct

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