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crushing energy consumption coal kick bond index

The Bond low-energy impact crushing work index (more informally, the Bond crushing work index) is not as common as the Bond ball mill work index, and it is a notoriously noisy test.. The test is a 'per-specimen' test where individual specimens of prepared rock are hand-picked by the test operator and placed into the apparatus.

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  • Kicks LawIt state that the work required for crushing a

    Determine the energy required to crush the material from 25 mm to 3.5 mm. Assuming: a) Ritttingers law b) Kicks law c) Bond law 2) A material is crushed in a blake jaw crusher such that the average size of particle is reduced from 50 mm to 10mm with the consumption of energy 13.0KW/(kg/s).What could be the consumption of energy needed to crush ...

  • SIZE REDUCTION Universiti Teknologi Malaysia

    Equations to estimate energy due to : Bond (1952) Kick (1885) ... should be the power consumption if the capacity is increased to 12 ton/h ... WORK INDEX Include friction in the crusher & power Material Specific gravity Work Index, W i Bauxite 2.20 8.78 Cement clinker 3.15 13.45

  • Powder Mass of Coal After Impact Crushing A New Fractal

    Jun 17, 2020 In this study, the fractal fragmentation theory is used to describe the PSD of rock after crushing. The new surface theory is adopted to characterize the rock firmness; the firmness is directly proportional to the surface energy consumption (Bond 1955; Carpinteri et al. 2004).Combining these two theories, a new index, f s, is proposed.Through a large number of experiments, the effects of the ...

  • Calculation model of coal comminution energy consumption

    The relationship between energy consumption and size distribution of original coal particles and crushing products were discussed. The results show that the specific impact energy increases as ...

  • Effects of the Shape and Size of Irregular Particles on

    If the exponent D in equation is set to the values 3, 2.5, and 2, the relationship of specific energy and initial size meets Kick energy theory , Bond energy theory , and Von Rittinger energy theory , respectively: where E is breakage energy per unit mass for fracturing (J/kg), r the initial size of the brittle particle (mm), and D the fractal ...

  • Impact Crusher Working Principle

    Jun 23, 2015 Improved crushing technology shows the way to reducing both energy and wear metal consumption mainly by producing finer feed which will improve downstream grinding mill performance. Because there has been less emphasis on crushing technology than milling, this paper will also discuss objectively the comparisons of energy and wear metal for the ...

  • Theory of Size Reduction Food Tech Notes

    Jul 15, 2020 Bonds law: An intermediate and more realistic method of predicting power consumption for crushing and grinding was proposed by Bond in 1952. It states that “the work required to from particles of size is proportional to the square root of the volume ratio (S P /S V) of the product. Table below shows work indices for some compounds.

  • Size reduction GIKI SlideShare

    • Bond has suggested a law intermediate between Rittinger’s and Kick’s laws, by putting p = −3/2 in the general equation: • Writing C = 5Ei then: • Bond terms Ei the work index, and expresses it as the amount of energy required to reduce unit mass of material from an infinite particle size to a …

  • Evaluation of the batch press as a SciELO

    energy consumption is independent of size; between 10 000 and 100 m the exponent approximates –0.5; and below 100 m it approximates –1. The three regions as indicated define the applicability of the so-called comminution laws. The region above 10 mm approximates Kick’s law, which states that the energy needed to crush a piece of rock is a

  • Glossary U.S. Energy Information Administration EIA

    Official Energy Statistics from the U.S. Government. C. C/gal: Cents per gallon C 4 H: A mixture of light hydrocarbons that have the general formula C 4 H n, where n is the number of hydrogen atoms per molecule.Examples include butane (C 4 H 10) and butylene (C 4 H 8).. CAFE: Corporate Average Fuel Economy Calcination: A process in which a material is heated to a high temperature without ...

  • Bond Work Index an overview ScienceDirect Topics

    The Bond work index ( Bond, 1960) is based on Bond’s law, which states that the energy consumed is proportional to the 1.5 power of particle size rather than the square of Rittinger’s law. Accordingly, the energy consumed in reducing the particle size from x F to …

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