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The Bond 39 s work index of Baban Tsauni Nigeria ore was found to be 11 52kWh tonne Keywords Grindability comminution energy mineral comparative Bond devised several methods for predicting ball mill and rod mill energy requirements and cumulative per cent mass passing each sieve size was calculated

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL MILL SCALEUP Ball mill scale up Bond 39 s Law Data ○ Bond work index wi ○ Feed D inside the mill ○ The simplified E Model empirical Based on the former but it contains fewer and simpler equations Result Extensive database of power

30 Apr 2016 It is known that ball milling is an energy intensive process and great efforts have been made over the years to improve energy breakage parameters were back calculated by minimizing the residual error between experimental and reproduced P R 1867 Kick F 1885 and Bond F C 1952 These

2 Scope The SAGDesign Mill sizing spreadsheet was designed to determine the most appropriate mill dimensions andoperating conditions for a given SAGDesign™ Testwork Description SAGDesign™ testing measures the macro and micro ore hardness by means of a SAG mill test and a standard Bond Ball Mill Work nbsp

17 Mar 2017 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 39 chunk nbsp

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Mill grinding Wikipedia the free encyclopedia bond ball mill calculations spreadsheet SAG is an acronym for Semi Autogenous Grinding SAG mills are

22 Sep 2017 You can read all the details of this now Biblical grinding power requirement calculation formula in Fred Bond 39 s original paper 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 nbsp

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It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions It is a 39 locked cycle 39 test conducted in closed circuit with a laboratory screen The Bond Ball Mill Work Index can be used in the design calculations and simulations using JKSimMet of a new grinding nbsp

Presently power based equations remain the principal method for designers to size mills and estimate The Bond equation is used to calculate ball mill specific energy from T80 to the final product P80 size The Its ore characterisation testwork database comprises over 5000 samples on projects from around the globe

It is known that ball milling is an energy intensive process and great efforts have been made over the years to improve energy breakage parameters were back calculated by minimizing the residual error between experimental and reproduced size distributions P R 1867 Kick F 1885 and Bond F C 1952 These

Chapter M MODELLING SIMULATION OPTIMIZATION proposed ball mill in closed circuit with a new second hydrocyclone package The second specified rate or the

17 Mar 2017 An online calculator lets you calculate Top Ball Size of Grinding Media for your mill Use this Equation amp Method to Although it was developed nearly 50 years ago Bond 39 s method is still useful for calculating necessary mill sizes and power consumption for ball and rod mills This paper discusses the basic nbsp

14 Jun 2017 Autogenous Mills CIRCUIT DESIGN Figure 2 BOND BICO BALL MILL Ball Mills Founded in 1997 Shandong Xinhai Mining Technology Design Method of Ball Mill by Discrete Spreadsheet calculation that fits the Rosin Rammler equation to a set of Design and Optimization of Ball Mill for Clinker

Historically before Bond in order to be able to size ball mills for new projects Allis Chalmers ran standard laboratory grindability tests on samples of the ore from Then by comparison with their test database the required kWh per ton for the new mill could be estimated and along with the design tonnage the needed mill nbsp

Alex Doll testwork middot Comparison of UCS to Bond Work Indices Spreadsheet calculation that fits the Rosin Rammler equation to a set of particle size data consisting of an a ↓ read more ↓ Memorandum describing the SAG mill amp ball mill circuit sizing lecture delivered to the University of British C ↓ read more ↓

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bond ball mill calculations spreadsheet MININGE EQUIPMENT for the design of a new The Bond Ball Mill Grindability Test is a locked cycle laboratory grinding test

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test methods used by AusGrind for throughput and comminution power calculations are DWi from SMCC tests Axb from JK drop weight tests CWI from Bond Crusher tests RWI and BWI from the Bond rod and ball mill tests Other testwork data such as the Advanced Media Competency tests SPI and SAG Design nbsp

steady state is desirable in a grinding test because harder components may build up over time For AG SAG mills this may result in a critical size build up and associated throughput losses The importance of steady state testing increases with the ore heterogeneity On the other hand the batch tests e g Mod Bond SPI® nbsp

Figure 3 SPI Profile Database MinnovEX The Bond rod mill work index is used to calculate the power requirement to grind from ½ to about 14 mesh The test has been mainly used for the design of rod mills or primary ball mills but it can also be used along with the other Bond tests BWI and CWI for SAG mill design

Load Calculation For Ball Mill Circulating A Bond Ball Mill Index Test 3 Apr 2000 Printouts of spreadsheet calculations must also be laid out so that

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Plitt and Nageswararao models have been used to describe the performance of hydrocyclones which by linking to the ball mill model allow for closed circuit simulations is the mill feed d 80 size lm Given W W i and F 80 one can calculate the product size namely P 80 This is one of the simplest models to predict

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Ball 1000 AG amp SAG 5000 Impactors vertical type Regarding Work Index Bond for grinding see 3 40 Grinding mills tumbling type Stirred grinding mills 4 8 Data sheet see 3 22 Tertiary cone crushers – HP and MP series – Feed size vs capacity Feed top size at minimum setting 10 mm and coarse liner profile

26 Apr 2016 Abstract Standard drop weight SMC and Bond ball work index tests have been conducted to investigate different comminution circuits i e jaw crusher HPGR mill ball mill jaw crusher ball mill and Comparison between the Eastern Hebei magnetite ore and JKTech ore characteristic database

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indicates that there is a lower percentage of material passing 1 10th the original particle size or greater resistance to abrasion breakage Napier Munn et al indicate a possible correlation between the impact bA and abrasion a t parameters and the Bond ball mill work index given by the equations Hasani et al 2009