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Use this online formula to calculate a Ball Mill, Rod Mill or SAG Mill Operating Work Index. Based on Fred Bond’s work you can estimate the energy used into your grinding circuit. This is the most accurate and informative method, but much of the data necessary for its application is not yet available. A) Total Apparent Volumetric Charge Filling including balls and excess slurry on top of

More12/12/2016· Ball Mill Power Calculation Example 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...

MoreThe 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 ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

Moreball mill operatng work index calculation. ball mill calculation ball mill for work index test Diameter of balls mm 381 3175 254 1905 1587 Number of balls 13 20 3 21 28 Besides the results of work index tests are accordingly implemented in Equation 5 to calculate the ore work index values Equation 5 is similar to Bond work index equation but it has Chat Here

MoreWe have calculate effective energy ball milling,The Bond work index W i as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding ore in practice we can expect some difficulties and errors when the energy consumption is determined according to this formula in the case when for a given size of grinding product the

Moreball mill operatng work index effeciency. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals. We can provide you the complete stone crushing and beneficiation plant.We also supply stand-alone crushers, mills and beneficiation

More24/10/2018· The Work Index is a fitted coefficient to Bond's equation given in the picture above. The work index can either be measured in the laboratory (the Bond ball mill work index determination is a...

MoreThe ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh), thus determining the ball mill work index (WiB or BWi).

MoreThe sizing of ball mills and ball milling circuits from laboratory grinding tests is largely a question of applying empirical equations or factors based on accumulated experience. Different manufacturers use different methods, and it is difficult to check the validity of the sizing estimates when estimates from different sources are widely divergent. It is especially difficult to teach mill

MoreApplication of Operating Work Indices in Autogenous . power draw of AG/SAG and ball mills. Note that the ball mill operating work index is applied only on the portion that needs the additional grinding (Q2) which renders to the AG/SAG mill the credit for the fraction of the material that had been already ground to final product (Q1).

Moreball mill operatng work index calculation. ball mill calculation ball mill for work index test Diameter of balls mm 381 3175 254 1905 1587 Number of balls 13 20 3 21 28 Besides the results of work index tests are accordingly implemented in Equation 5 to calculate the ore work index values Equation 5 is similar to Bond work index equation but it has Chat Here

MoreWork Index; Mill shaft power; Specific gravity of the rock; Bond developed an expression for capacity that accounts for each of these factors. A ball mill in situ and operating in Alaska. Mill Throughput Capacity. Bond expressed mill capacity as a function of mill shaft power (PM, kW) and the energy required for particle breakage (kWh/f):Q = Pâ†“M / E; The expression for mill shaft power

MoreWe have calculate effective energy ball milling,The Bond work index W i as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding ore in practice we can expect some difficulties and errors when the energy consumption is determined according to this formula in the case when for a given size of grinding product the

More09/04/2019· The Work Index is a fitted coefficient to Bond’s equation given in the picture above. The work index can either be measured in the laboratory (the Bond ball mill work index determination is a common example) or it can be calculated from the operating performance of a milling circuit (which would be an operating work index).

MoreBall Mill DesignPower Calculation. Based on Fred Bonds work you can estimate the energy used into your grinding circuit. Ball mill cost calculation Henan mining machinery and ball mill design calculator describes bond ball mill index jktech a bond ball mill performance index test may need to be calculated for designing a new mineral ball mill 165 view liming is a professional mining equipment

MoreThe ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh), thus determining the ball mill work index (Wi B or BWi). The work index calculations across a narrow size range are conducted using the appropriate laboratory work

MoreThe Bond work index, Wi, is defined in a Bond ball mill on the samples of standard size − 3.327 + 0 mm. In practice, it is possible to find materials of non-standard size that are finer than 3

Moreball mill operatng work index calculation. ball mill operatng work index calculation. Request for The breakage function calculated using BII method from the corresponding The Bond ball mill operating work index for the different lifters, 31% charge, 70% ..

MoreIt is possible to make an approximate calculation of the capacity of a ball mill with uneven armor by means of the equation: N these mills often work in a closed cycle. A scheme of the conical ball mill supplied with an air separator is shown in Fig. 2.13. Air is fed to the mill by means of a fan. Carried off by air currents, the product arrives at the air separator, from which the coarse

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