Metallurgical ContentThe Two LawsWhat about BondRittinger’s LawThe CrushingSurface Diagram Rittinger’s theory and law of the energy expended in crushing of rock is that the work of crushing is proportional to the reduction in diameter or as I have more fully expressed it “The work done in crushing is proportional to the surface exposed by the operation or better expressed for
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Online ChatIn this lesson we discuss Laws of Crushing 1 Rittingers law 2 kicks law 3 Bonds law Work index
Online ChatBased on Bonds Crushing Law the power required to • Based on Bonds Crushing Law the power required to crush a certain material will change by if the diameter of the product is made smaller by 50 Subscribe to view the full document • In crushing a certain ore the feed is such 80 is less than 508 mm in size and the product size is
Online ChatWhat is bonds law of crushing Wiki Answers Where Kb is a constant that depends on the type of machine and on the material being crushed To use this equation a work index Wi is
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Online ChatChapter 3 Particle Technology Size Reduction Kick’s law the work required for crushing a given mass of material is constant for the same reduction ratio 322 Bond crushing law and work index
Online Chat• Based on Bonds Crushing Law the power required to crush a certain material will change by if the diameter of the product is made smaller by 50 • In crushing a certain ore the feed is such 80 is less than 508 mm in size and the product size is such that 80 is less than 635 mm
Online ChatSee this useful summary Table of Bond Work Index by Minerals For any circuit whether a crushing circuit a rod mill or a closed ball mill circuit the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um
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Online ChatMar 25 2015 · Rittinger’s Law The energy required for reduction in particle size of a solid is directly proportional to the increase in surface area E K R f c 1L 2 – 1L 1 Kick’s Law The amount of energy required to crush a given quantity of material to a specified fraction of its original size is the same regardless of the original size
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Online ChatWhat is bonds law of crushing Wiki Answers Where Kb is a constant that depends on the type of machine and on the material being crushed To use this equation a work index Wi is
Online Chathave discussed the size reduction its definition objective and breakage pattern mechanism and mode of Bond so we are having three laws of comminution and we call it Kicks law Rittingers law and Bonds law So if we consider the Kicks law the energy consumption while crushing
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Online Chatbonds equation crushing Mine Equipments predictions for ball mills typically use the following form of the Bond equation 322 Bond crushing law and index What is bonds law of crushing Wiki Answers Where Kb is a constant that depends on the type of machine and on the material being crushed
Online ChatCalculations involving Bond’s work index are generally divided into steps with a different Wi determination for each size class The low energy crushing work index laboratory test is conducted on ore specimens larger than 50 mm determining the crushing work index Wi
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Online ChatBond’s crushing work index of gypsum 34 A sample of granite passing a 75 cm square opening screen was suspended in a Bond’s pendulum test The length of the pendulum was 413 mm and the mass of hammers is 136 kg each The sample was completely crushed when the initial position of the pendulums made an angle of 30° with the vertical
Online Chat11 Crushing and classification Estimates vary but it is generally accepted that of all the energy used in the World something like between 1 and 10 is in comminution ie the processes of crushing grinding milling micronising etc Changing the size of the particles by crushing
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Online ChatBond F C “Crushing Tests by Pressure and Impact” Trans AIME Vol 169 1947 pp 5866 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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