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Product Size Given By Ball Mill
Chat OnlineBond Tests SGS
P = The 80% passing size of the ground product in µm F = The 80% passing size of the feed in µm The test is a closed circuit dry grindability test performed in a standard ball mill It can be performed at mesh sizes ranging from 28 mesh to 400 mesh The normal finishing size
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Mar 08 2021· Overflow discharge ball mill can grind ores into the size under mm so it is very suitable for the second grinding system The capacity of it is about 15% lower than grate discharge ball mill in the same specification and the loaded grinding medium is also less than that one Rod mill Fote rod mill
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size of the feed and the product m respectively Bond developed a standard laboratory test for the determination of the work index for ball and rod mills in 1952 and modified it in 1961 The standard Bond ball mill
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and the experimental and predicted size distributions of the products are given in Table 4 The ball mill performance was poor and could be indicated by only 5 9 % of< 125 µm target product
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Feed and product size distribution of a ball mill are given in the following table Work index Wi of the ore ground is 12 kWh per ton Calculate the energy required for this size reduction If the capacity of the mill is 150 t/h what would be the power consumption in the mill 20 pnts Mill Feed Wt Size fractions um % 500 2 60 500 400 6 25 400 300 11 15 300 212 18 23 212 150 28 39 150 106 17 75 106 15 63 Total 100 00 Mill Product Wt Size
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and the experimental and predicted size distributions of the products are given in Table 4 The ball mill performance was poor and could be indicated by only 5 9 % of< 125 µm target product
Get PriceComputer Simulation of Product Size Distribution of a
Computer Simulation of Product Size Distribution of a Laboratory Ball Mill ability of breakage of the material of a given size and the size distribution of the pro product size
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Oct 03 2017· Each method has also given rise to a diverse range of size reduction equipment and in many cases many types of machines representing several different milling methods may all be well suited for processing the identical product and for meeting the identical size
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Question Feed and product size distribution of a ball mill are given in the following table Work index Wi of the ore ground is 12 kWh per ton Calculate the energy required for this size reduction If the capacity of the mill is 150 t/h what would be the power consumption in the mill 20 pnts Mill Feed Size fractions um 500 500 400
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Apr 27 2019· For example reduction to one half of the original particle size requires about 4 3 kg cm per gm by impact as compared to kg cm by ball mill that is the energy requirements are less than 25 percent as much for impact crushing as for ball milling
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size of the feed and the product m respectively Bond developed a standard laboratory test for the determination 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
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Computer Simulation of Product Size Distribution of a Laboratory Ball Mill ability of breakage of the material of a given size and the size distribution of the pro product size
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21 CONCLUSIONS Continued In the present work equations were also derived giving zthe ball mill power drawP as a function of its dimensions internal mill diameter D and length L zthe ball mill power drawP as a function of the feed D f mm and the product size d mm the Bond work index w i kWh/short ton and the mill throughput T short ton/h zthe ball mill dimensions D and L when
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Jun 19 2015· A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of 80% passing ¼ inch 6350 microns The required product size distribution is to be 80% passing 100 mesh 149 microns In order to determine the power requirement the steps are as follows Example Calculation
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•Particles of average feed size 50 x 10 4 m are crushed to an average product size of 10 x 10 4 m at the rate of 20 tonnes per hour At this rate the crusher consumes 40 kW of power of which 5 kW are required for running the mill empty Calculate the power consumption if 12 tonnes/h of
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The experiments are carried in stirred ball mill SBM with ball size of and tip velocity /s The product obtained from industrial ball mill at six hours of grinding was taken and further milled in SBM The desired product was obtained within 15 minutes The results of the size analysis are shown in
Get PriceThe Main Factors Affecting the Particle Size of Ball
The Main Factors Affecting the Particle Size of Ball Milling It is not easy to get nano size powder by planetary ball mill normally effect of wet grinding is better than dry grinding The main factors affecting the particle size of ball
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the final product size The prediction of the SAG mill transfer size used in the formula is made by comparison with pilotplant data and operating plant data for similar ore types Barratt 1989 The approach acknowledges grinding efficiency as the ratio of operating work index to that for a single stage ball mill
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Effect of ball size 29 Empirical approaches 29 Probabilistic approaches 33 Abnormal breakage 36 Effect of ball mixture 37 Ball size distribution in tumbling mills 37 Milling performance of a ball size distribution 40 Summary 41 Chapter 3
Get PriceCalculate Top Ball Size of Grinding Media Equation Method
Sep 05 2015· Calculate Top Ball Size of Grinding Media FRED C BOND Equation Method Although it was developed nearly 50 years ago Bond s method is still useful for calculating necessary mill sizes and power consumption for ball and rod mills
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