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Get PriceThe effect of mill feed size and hardness on throughput rate is apparent with feed ..... 2 WiC = Bond Crusher Work Index, Wibm = Bond Ball Mill Index and Wirm ..... by and hence can not be integrated into a spreadsheet calculation. Read more

[PDF]Get PriceBond Work Index - Mitchell (Average) kWh/t 14.6 Testwork Reports Bond Work Index - Sulphurets (Average) kWh/t 19.0 Testwork Reports ... Ball Mill Recycle Load % 250 Engineering Design Mill Speed % CS 76 Engineering Design Mill Ball Charge % 30-35 Engineering Design Classification Cyclones Engineering Design

Get Pricedetermination of the work index for ball and rod mills in 1952 and modified it in 1961. The standard Bond ball mill grindability test is a closed circuit dry grinding test with a 250% circulating load. The standard procedural outline of the test is stated in (Bond) 1961. The work index for a ball mill, Wi, is then calculated from the following ...

[PDF]Get PriceApr 03, 2007 · The Bond ball mill test is designed to predict power in wet ball mill grinding circuit operating at a 250% circulating load. However, moving away from this condition reduces the accuracy of the test. Further, the Bond ball mill test does not predict the behavior of large rocks in a grinding circuit where the mode of breakage is impact dominated.

Get PriceNov 18, 2014 · Test design Slide 13 Effect of circulating load on Bond's work index The follow figures shown variation in the Bond work index with test sieve size as test results[7]. Variation of Bond work index with circulating load. C.L. = 14.

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Get PriceComparing of Ball Mill Design using Bond Work Index ... According to Fred Bond in his paper Crushing & Grinding Calculation Part I, where he ... undersize for a 250% circulating load. Then a size ...

[XLS]Get Pricewhere d* is the filling load of grains less than d, d is the grain diameter, d max ... Bond's working index for quartz is W i = 14.2 kWh/t and for for copper ore W i = 14.9 kWh/t. ... The optimal ball diameter in a mill 333 The grinding efficiency of the narrow particle size fractions with ball charge of ...

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[PDF]Get PriceOct 19, 2017 · Bond formula for the grinding balls size calculation October 19, 2017 · Archive · 0 . The enterprises consumers grinding media have a question about right choise the grinding ball size (diameter) for the mill in order to achieve the required grinding quality.

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M = Fresh Ore Throughput (not including Circulating Load), ton/hr. P = Net Mill Power Demand, kW. Bond's Work Index may be estimated directly from operational data (whenever available) from back-calculation of the first equation above. In such case is denoted as the Operational Work Index :

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Get PriceThe Bond ball mill grindability test is run in a laboratory until a circulating load of 250% is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to ...

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Get PriceLoad Materials according to the instructions in the printer owner's manual. Recommended feeding is generally to use the manual feed tray, or the straightest path through the printer. Upon Completion, the unused material should be stored in a closed package, re-sealed and stored flat.

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Get Price2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL-MILL SCALEUP Ball-mill scale up (Bond's Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)

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