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    test method for bond ball mill work index Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have

  • Bond Rod Mill Work Index Equipment & Apparatus Review

    Mar 31, 2016· Commentary on the apparatus of the Bond rod mill Work Index. by Alex Doll December, 2015 [email protected] The Bond “Third Theory” of comminution was originally divided into three size classes reflecting the varieties of comminution equipment common during the time period when Bond (and his collaborators) were gathering the information to calibrate comminution models.

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    Jun 06, 2015· The Bond grindability was calculated to be 1.21 g net undersize/revolution by averaging the results from the last 3 runs on the Bond Mill. The grindability is defined as the ease at which a mineral particle is reduced to a predetermined size and used to calculate the Work Index.

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    The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill. 2. Procedure 2.1. Bond Ball Mill Grindability The sample was crushed to 100% passing 6 mesh (3.35mm), from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

  • Bond Work Index Formula-Equation 911 Metallurgist

    Basic EquationsSize Distribution and Exposure RatioEquations For Work Index VariationsWork Index and Crack EnergyThe 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 grinding resistance parameter. It represents the energy input required in kilowatt hours to reduce a short toSee more on 911metallurgist
  • Table of Bond Work Index by Minerals 911 Metallurgist

    Jun 19, 2015· Source 1: Table of materials reported by Fred Bond Source 2: Outokumpu, The science of comminution Source 3: Equipment and pipelines Source 4: Tenova Bateman mills (AG/SAG, Rod, Ball Mills) Source 5: Doering international GmbH cylpebs Source 6: SME handbook of mineral processing, N.L Weiss Editor, NY 1985. Bond Work Index Tester

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    The Bond rod mill work index is not as common as the Bond ball mill work index, and there are two different variations on the mill apparatus. The SAGMILLING.COM models expect a mill with a "wave liner", and is not compatible with mills using "smooth liners". Most laboratories outside of Australia use the wave liner style of machine these

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    * Bond F. C., “Crushing Tests by Pressure and Impact”, Trans AIME, Vol 169, 1947, pp 58-66. Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied.

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    Where, WioACTis the Actual Operating Bond Work Index (kWh/t), W is the specific energy input (kWh/t), P80 is the 80% passing size of product (µm), and F80 is the 80% passing size of circuit feed (µm). 2. Calculate the Standard Circuit Bond Work Index (WiSTD) for the material being processed (equation 3

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    Calculate the operating work index for the circuit. b. Circuit feed samples taken at the same time were sent for Bond work index testing. The rod mill test gave RWilab of 14.5 kWh t −1 and a ball mill work index BWilab of 13.8 kWh t −1.

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    International Journal of Emerging Technology and Advanced Engineering593 Кб. Different C++ programmings were written to compute energy requirement, work input and grindability for the ball mill using the above mentioned systemThe results for the Bond work index grindability thus obtained may differ substantially with different standard Bond ball mills (Kaya et al., 2003).

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    Dec 15, 2018· The calculated Bond Work Index (BWI) for raw wood chips and raw wood pellets were 2605 and 732 kWh Mg−1 and were reduced to 90 and 83%, respectively after torrefaction at 250 °C. The bond work index for both torrefied pellets and wood chips reached to

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    Energy consumption for grinding was studied based on classical grinding laws, namely, Bond's, Rittenger's and Kick's law. Bond's Work index varied from 0.5 to 4.3 kJ kg−1 depending on the size

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    3 Tags; Little abrasion wear, Long service life . Based on 30 years of development experience of grinding equipment, LM Heavy Industry produced LUM Series Superfine Vertical Roller Grinding Mill to make ultra-fine powder.

  • Studies on the effect of milling finger millet in

    Energy consumption for grinding was studied based on classical grinding laws, namely, Bond's, Rittenger's and Kick's law. Bond's Work index varied from 0.5 to 4.3 kJ kg−1 depending on the size

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