# bond work index ball mill

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Bond Work Index Test Report Example 1 Mill Grinding The Work Index is used when determining the size of the mill and 2.1 Bond Ball Mill Grindability The sample was crushed to 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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Generally Bond work index is a common method for selecting comminution equipment as well as estimation of grinding efficiency and calculating required power In the current research a simple fast and accurate procedure is introduced to find the rod mill work index based on the conventional Bond work index.

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Download scientific diagram Relationship of A b and Bond ball mill work index in various lithologies and alterations from publication The use of Geometallurgy to Estimate Comminution

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The EDEMET Bond Mill is designed to perform the Bond ball mill work index test to determine the grinding energetic consumption of Labtech Index Bond Ball Mill get a quote Bond Index Ball Mill Rod Mill

Get Price### Bond Work Index Formula Equation

2018 3 23 You can also review the step by step Bond Work Index Test Procedure I posted here See thisuseful summaryTable of Bond Work Index by Minerals For any circuit whether a crushing circuit a rod mill or a closed ball mill circuit the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to

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The test requires about 8 kg of material Although it can work on feed as fine as 2.5 mm it is best to send material to the testing laboratory that is nominally at least 8 mm including the natural fines that are part of the sample The laboratories have a standard way of reducing the coarse material to the roughly 2.5 mm size used to feed the test that will not introduce excessive fines Get Price### Predicting Mill Feed Specific Energy from Bond Ball Mill

2021 8 26 1 Predicting Mill Feed Specific Energy from Bond Ball Mill Work Index Tests at Olympic Dam Y Li1 V Liebezeit2 K Ehrig3 M Smith4 B Pewkliang5 and E Macmillan6 1 MAusIMM Senior Geometallurgist BHP Olympic Dam Adelaide South Australia 5000.

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2016 12 12 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

Get Price### COMPARISON OF HPGR

2017 5 26 Bond ball mill work index C Wi Bond crusher work index D HPGR roll diameter m E sp net specific energy consumption kWh/t F HPGR hydraulic pressing force kN F 80 particle size at which 80 of particles pass in feed F SP 2HPGR specific pressing force N/mm L HPGR roll length m ṁ or m dot HPGR specific throughput constant ts/hm3

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Correction of Bond Ball Mill Work Index Test forSAGMILLING It is commonly known that one must run the Bond ball mill work index test Bond ball mill test procedure were carried out on crushed 3.35 mm 6 mesh material at Mesogene ore type was observed to be the hardest among the hypogene .

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RETSCH is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application The High Energy Ball Mill E max and MM 500 were developed for grinding with the highest energy input The innovative design of both the mills and the grinding jars allows for continuous grinding down to the nano range in the shortest amount of timewith only minor warming

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2011 12 8 Bond Ball Mill Work Clinker A Procedure for Rapid Determination of the Bond Work A Procedure for Rapid Determination of the Bond Work Index on This index is determined on a laboratory scale using a Bond ball mill and by simulating dry Quantifying the effect of clinker grinding AIDS under laboratory conditions.

Get Price### Power based comminution calculations using Ausgrind

Bond ball mill work index test is used to calculate the work index related to fine grinding Mib Mia and Mib are used to calculate Ecs for the coarse Wa and fine Wb components according to

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ball mill bond work index ball mill bond work index As a leading global manufacturer of crushing and milling equipment we offer advanced rational solutions for any size reduction requirements including quarry aggregate grinding production and complete stone crushing plant Service Online Ball Mill Sizing With Bond Method Work Index Base

Get Price### Reproducibility Of Bond Work Index With Different

2002 1 1 This is accomplished by the standardization of mill dimensions tumbling speed grinding ball charge weight and distribution sample ore charge weight in the mill and operating practice The results of this investigation reveal that the Bond work index grindability values may differ substantially with different standard Bond ball mills.

Get Price### Bond Work Index Rod Mill

2021 9 29 The Titan Bond Work Index Rod Mill is one piece cast construction with integral wave liners of a form described by Bond This mill is used to perform the necessary metallurgical testing to determine the grinding characteristics of ores and power requirements for operating production size rod mills.

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The Bond Index conforming rod charge consists of 6 rods of 1.25 diameter and 21 length 2 rods of 1.75 diameter and 21 length The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave shaped design At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.

Get Price### Bond Work Index Procedure and Method

2015 6 6 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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2021 5 1 A Bond Work index mill ball charge and closing screen product size distributions for grinding crystalline grains Int J Miner Process 165 2017 pp 814 10.1016/j.minpro.2017.05.011

Get Price### AMIT 135 Lesson 7 Ball Mills Circuits Mining Mill

Mill diameter Mineral density 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 Size

Get Price### Reproducibility Of Bond Work Index With Different

2002 1 1 This is accomplished by the standardization of mill dimensions tumbling speed grinding ball charge weight and distribution sample ore charge weight in the mill and operating practice The results of this investigation reveal that the Bond work index grindability values may differ substantially with different standard Bond ball mills.

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Bond ball mill work index test is used to calculate the work index related to fine grinding Mib Mia and Mib are used to calculate Ecs for the coarse Wa and fine Wb components according to

Get Price### 10.1016/j.mineng.2008.04.008

2020 6 11 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 2006 This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the

Get Price### Chapter 10 Particle Size Reduction

2007 11 20 Bond 1952 E=CB 1 x2 1 x1 or dE dx =CB 1 x3/2 or EB=W1 10 x2 10 x1 where x 1 x 2 top particle sizes before and after or the sieve sizes in μm through which 80 powders in the feed and product respectively W 1 Bond work index e.g W I=9.45kWh/ton for bauxite =20.7 for coke from coal =8.16 for gypsum rock In general dE dx = C xN where N

Get Price### CORRELATION BETWEEN BOND WORK INDEX AND

2014 6 27 The Bond s standard ball mill is used to determine the work index value of differ ent samples The Bond work index is defined as the kilowatt hours per short ton required to break from infinite size to a product size of 80 passing 100 µm If the breakage

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2021 3 9 Ball Mill Instruction Manual PDF Ball Mill Diagram Sheet PDF The software to view and print Adobe Acrobat PDF is available for free from the Adobe website Follow the provided icon link to download Acrobat Reader 395 50 220/440v 3 phase 60 cycle 395 50X

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2019 5 9 Bond Ball Mill Work Index For Pure Quartz Bond Work Index FormulaEquation See this useful summary Table of Bond Work Index by Minerals For any circuit whether a crushing circuit a rod mill or a closed ball mill circuit the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um.

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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 on profitability Mill operators have long used operating

Get Price### Solved The feed stream into a ball mill has a Bond Work

Transcribed image text The feed stream into a ball mill has a Bond Work Index of 21.75 kWht The p80 of feed to the mill is 35.0 mm and the p80 of the product from the mill is 0.160 mm Calculate the work in kWh/tonne required to grind the ore to the product size.

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2019 5 9 Bond Ball Mill Work Index For Pure Quartz Bond Work Index FormulaEquation See this useful summary Table of Bond Work Index by Minerals For any circuit whether a crushing circuit a rod mill or a closed ball mill circuit the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um.

Get Price### Optimization and Performance of Grinding Circuits The

of the cyclone underflow back to SAG mill introduction of a second classification stage as well as introduction of a second ball mill The evaluation of breakage tests and survey data revealed the following the Bond work index obtained for the current ore ranges between 17.20

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Bond Work Index Report Matrix House 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 21 Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh 335mm from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill

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CORRELATION BETWEEN BOND WORK INDEX AND 2014 6 27 3 STANDARD BOND TESTS The Bond s standard ball mill is used to determine the work index value of differ ent samples The Bond work index is defined as the kilowatt hours per short ton required to break from infinite size to a product size of 80 passing 100 µm If the breakage Get Price

Get Price### Small Scale Tests to Characterise Ore Grindibility

work index for the design and analysis of ball mill circuits even those that treat AG/SAG mill or HPGR circuit products which have a non standard particle size distribution One of the keys of the Bond work index success over time has been its reliability and reproducibility Provided the original Bond procedure is followed the Bond work

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The EDEMET Bond Mill is designed to perform the Bond ball mill work index test to determine the grinding energetic consumption of Labtech Index Bond Ball Mill get a quote Bond Index Ball Mill Rod Mill

Get Price### Work Index Ball Mill 220 380V Advanced Industrial

Work Index Ball Mill alluding to the grind ability list of Metals is utilized to demonstrate the granulating trouble of the material It is measured by a rule that to compute the work file ball plant in light of yield of every unrest of the factory after the material is ground to an adjusted state by the predetermined plan.

Get Price### Bond Tests

Similar to a Comparative Work Index this test is an open circuit dry batch grindability test run in the standard Bond Ball Mill for a set time It can be used at mesh sizes from 65 to 200 mesh normally 100 mesh The test requires calibration against the standard Bond Ball Mill Work Index test to estimate the Work Index.

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2015 4 16 Table I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS The concentrate weight recovery was in the order of 50–60 Furthermore it may be observed that the Bond ball mill work indices for the ore Wi varies from 14.6 to 20.9 kWh/t.

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The Bond ball mill work index test is thought to be additive because of its units of energy nevertheless experimental blending results show a nonadditive behavior 18 The SPI R value is known not to be an additive parameter however errors introduced by block kriging are not thought to be significant AMIT 135 Lesson 8 Rod Mills

Get Price### Relationships between comminution J energy and

2015 4 16 Table I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS The concentrate weight recovery was in the order of 50–60 Furthermore it may be observed that the Bond ball mill work indices for the ore Wi varies from 14.6 to 20.9 kWh/t.

Get Price### Bond Work Index

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

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