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The operating ﬁ work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high inefﬁ ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is not suf cient to compensate ﬁ for the milling inef ciencies that arise. This can result in ﬁ the mill being undersized. To counter this problem it ...
Read More →Oct 24, 2018· To calculate the operating work index of a circuit, you must measure four things: P: The power draw of the mill. This is usually calculated from the input leads to the motor, then multiplied by ...
Read More →The Bond Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined.
Read More →= 1.0 for all crushers operating in closed circuit with a classifying screen. If the crusher is in open circuit, eg pebble crusher in a AG/SAG circuit, K. 2. takes the value of 1.19. x. 1 = P. 80. in microns of the circuit feed . x. 2 = P. 80. in microns of the circuit product . M. ic = Crushing ore work index and is provided directly by SMC ...
Read More →Bond ball mill index jktech a bond ball mill index test bbmwi is a standard test for determining the ball mill work index of a sample of ore the bbmwi is a crushing and grinding calculations part i and ii british chemical produce a 250 circulating load get quote. Get Price; aCalculations In Vertical Roller Mill
Read More →Cone Crusher Operating principle: Cone crusher consist of frame … cm was commissioned to crush limestone with a work index of 13.2 kWh/t. The crusher … Ball Mill Bond Work Index For Limestone – Gold Ore Crusher
Read More →Bond Work Index Formula-Equation - Mineral Processing Basic EquationsSize Distribution and Exposure RatioEquations For Work Index VariationsWork Index and Crack Energy The basic work index equation is:W = 10 Wi/√P – 10 Wi/√F(1)where W is the work input required in kilowatt hours per short ton to grind from 80% passing F microns to 80% passing P microns, and Wi is the work index, or the ...
Read More →Bond Work Index Formula-Equation - Mineral Processing Basic EquationsSize Distribution and Exposure RatioEquations For Work Index VariationsWork Index and Crack Energy The basic work index equation is:W = 10 Wi/√P – 10 Wi/√F(1)where W is the work input required in kilowatt hours per short ton to grind from 80% passing F microns to 80% passing P microns, and Wi is the work index, or the ...
Read More →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. The Barratt approach is the basis of the Millpower 2000 computer-based program (Matthews and Barratt, 1991). E SAG = 1.25.[(10.W iC.S
Read More →Jan 01, 2016· To calculate the operating work index the work input is obtained from the mill power which, if obtained from the motor power, has to be the power at the mill pinion shaft. That is, if adjustments were coupled directly to the pinion shaft, then motor output power is …
Read More →I have a question about CWi calculation.We have an existing plant and I want to calculate the CWi based on Bond formulation and compare it with lab tests results.At the existing plant the data are:F80= 370mmP80= 10mmSpecific energy is 1,8 Kwh/tWhen we apply the …
Read More →The operating ﬁ work index, though, is in the range of 21 kWh/t to 25 kWh/t showing high inefﬁ ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is not suf cient to compensate ﬁ for the milling inef ciencies that arise. This can result in ﬁ the mill being undersized. To counter this problem it ...
Read More →= 1.0 for all crushers operating in closed circuit with a classifying screen. If the crusher is in open circuit, eg pebble crusher in a AG/SAG circuit, K. 2. takes the value of 1.19. x. 1 = P. 80. in microns of the circuit feed . x. 2 = P. 80. in microns of the circuit product . M. ic = Crushing ore work index and is provided directly by SMC ...
Read More →The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and ...
Read More →Crusher Operating Work Asindex Calculation. Crusher operating work asindex calculation. power calculation of impact coal crusher based on Calculate Crusher Work Index how to calculate the power for a 100 tph cement mill How To Calculate Mill Bond Or Work Index how to calculate crusher work index Bond Ball Mill Index JKTech A Bond Ball Mill Index Test BBMWI is a standard test for …
Read More →The Bond Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined.
Read More →work index, capacity and the reduction ratio. Adopting Gupta and Yan [5] the power is given by, P = Q.R d.w i where Q = crushing capacity, Rd = reduction ratio (x 1 /x 2) and wi = work index. In this work Q = .356 t/hr and x 1 = 7.5mm. A roll gap of 5mm had already …
Read More →How Much Does It Cost To Operate a Crusher? By Chris Nawalaniec. Crushing equipment is the heart of an industrial material-processing system. The size reduction choice you make will have a profound impact on the profitability of your business.
Read More →This is the starting point for understanding how cone crushers work – and how they can make your mine or quarry more productive. Elsewhere on the site you can find detailed information about all aspects of crushing and screening, but to make sense of these it helps to understand the basics of cone crushing. That's what you'll find here!
Read More →Work indices obtained from operating data on any mill can be compared to grindability test results The operating work index, Wiop, can be obtained using Bond's equation by defining W as the specific energy being used (power draw/new feed-rate), f80 and p80 as the actual feed and product 80% passing sizes, and Wi as the operating work index, Wiop.
Read More →The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and ...
Read More →Crusher Operating Work Calculation . Crusher operating work index calculation aug 8 2011 a large amount of work done previously and published hilst similar in principle of operation to a jaw crusher a gyratory crusher consists of a conical eduction in work index was calculated as being 14 10kwht read more crusher work calculaten. More Details
Read More →Crusher Operating Work Asindex Calculation Atmandu. Crusher work index tests crusher work index tests operating crusher is within the normal range of variation for this calculation crushing crusher work index wordreference forums 20181031 crusher work r wikipediaeach crusher is designed to work with a certain maximum size of raw material and often delivers its output to a …
Read More →Operating Work Index Is Not The Specific Energy Consumption Oct 24 2018 to calculate the operating work index of a circuit you must measure four things p the power draw of the mill this is usually calculated from the input leads to the motor then multiplied by Crusher Operating Work Index Calculation.
Read More →In practice, it is possible to find materials of non-standard size that are finer than 3.327 mm.In this work, a procedure for the calculation of the Bond work index is suggested for cases when the ...
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