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##### Rock Crushing Theory and Formula using Kick Rittinger s Law

• Based on Bond s 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 50 8 mm in size and the product size is such that 80 is less than 6 35 mm

##### Size reduction GIKI - SlideShare

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##### Based on Bonds Crushing Law the power required to crush a

What is bond s 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 …

##### Bond F C Crushing And Grinding Calculations British

Ponder Technology 7 1973 315-317 Elsevier Sequoia S A Lausanne - Printed to The Netherlands A Commentary on the Kick Bond and Rittinger Laws of Grinding L G AUSTIN Department of Material Sciences The Pennsylcanta State University University Park Pa 16802 U S A Received November 8 1972 315 Summary Confusion concerning the so-called general lass of grinding proposed by Walker …

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bond crushing law in ball mill grinding mill equipment Use of the Bond work index to size industrial grinding equipment is widely known the data Bond found there was Fred Chester Bond Wikipedia Fred Chester Bond June 10 1899 January 23 1977 was an American mining engineer A graduate and former professor of the Colorado School of Mines

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Comminution is the reduction of solid materials from one average particle size to a smaller average particle size by crushing grinding cutting vibrating or other processes In geology it occurs naturally during faulting in the upper part of the Earth s crust In industry it is an important unit operation in mineral processing ceramics electronics and other fields accomplished with

##### Orway Mineral Consultants Canada Ltd Mississauga ON

Metallurgical ContentThe Two Laws What about Bond Rittinger s Law The Crushing-Surface 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

##### A commentary on the Kick Bond and Rittinger laws of grinding

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FM 306 SIZE REDUCTION AND SIEVING OBJECTIVE •To grind the given limestone material to a smaller size using a ball mill and to obtain the size distribution of the initial and the final mixture by sieving •To estimate the energy required for the grinding operation •To analyze the results using the available theories INTRODUCTION

##### JKTech Laboratory Services

Oct 05 2017· • Ball Mill • Ball Mill Advantages • Tumbling Mill Action Arrhenius Law b Kick s Law c Bond Law d Rittingers Law View Answer Answer d Explanation Kick s law holds good for coarse crushing and amount of surface produced is less advertisement …

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##### Bond Work Index Formula-Equation

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##### Relationships between comminution J energy and product

Oct 10 2014· • 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 size L2 of 100 μm that is q =∞ 7

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CORRELATION BETWEEN BOND WORK INDEX AND MECHANICAL PROPERTIES OF SOME SAUDI ORES Gamal S Abdel Haffez KAU Jeddah KSA E-mail gamalhaffez yahoo com Lecturer Mining Engineering Dept ±Faculty of Engineering- Assiut University Egypt Received Octobe r 16 2011 Accepted December 4 2011 The crushing energy in mineral processing industry is

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Chapter 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 3 2 2 Bond crushing law and work index

##### Mill grinding - Wikipedia

A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill s and the associated grinding circuit s Sample Requirements A minimum of 10 kg of material crushed to nominally minus 10 mm is preferred JKTech would stage crush the sample to minus 3 35 mm as required for the Bond Ball Mill Work Index test feed

##### CORRELATION BETWEEN BOND WORK INDEX AND …

b = Correction factor for pebble crushing T 80 = Mill transfer size 80 passing µm W BM = Ball mill specific energy from T 80 1 7 mm to final product P 80 using Bond s Law kWh t W T = Total grinding mill circuit specific energy kWh t Note that K BM is the composite of EF3 EF4 and EF5 factors for ball milling Rowland 1982

##### FM 306 SIZE REDUCTION AND SIEVING - IIT Bombay

Energy requirements in size reduction of solids L G Reddy INTRODUCTION Kick s law Et n x 3 Bond s theory Et = 2C 1 1 x 2 It can be seen that curve A tends to become 4 --- the range of crushing is the range of basic law of Kick The slope of cumulative curve

##### A New Approach to the Calculation of Work Index and the

A New Approach to the Calculation of Work Index and the Potential Energy of a Particulate Material tests which is similar to the Bond test but with the exist- ing mill of known power according to Bond s theory without any cor- rection factors are presented in column 5 Theoreti-

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##### FM 306 SIZE REDUCTION AND SIEVING - IIT Bombay

CALCULATION OF THE REQUIRED SEMIAUTOGENOUS MILL POWER BASED ON THE BOND WORK INDEXES O I SKARIN the Bond work indexes of crushing rod milling and ball milling For adaptation of Bond s law to the particular operating conditions Rolland introduced 8 …

##### A crushing law proposed by Rittinger in 1867 states that

JKTech Laboratory Services Bond Ball Mill Index Test BRMWI 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 measure of the resistance of the material to crushing and grinding It can be used to determine

##### O I SKARIN N O TIKHONOV CALCULATION OF THE …

the term bond refers to ﬁnancial instruments such as sur-ety bonds performance bonds ﬁdelity bonds and letters of credit In the context of mining operations a ﬁrm posts a bond with the regulator that is released when reclamation is successfully completed If site recla- …

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A mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting Such comminution is an important unit operation in many processes There are many different types of mills and many types of materials processed in them Historically mills were powered by hand e g via a hand crank working animal e g horse mill wind or water

##### Bond Tests Mining SGS

size reduction circuits Charles 1957 However Bond s Third Law can be reasonably applied to the range in which ball rod mills operate in In spite of the empirical basis of Bond s theory it is the most widely used method for the sizing of ball rod mills and has become more likely a standard The general form of Bond s equation is as

##### crushing grinding calculations part 1

FM 306 SIZE REDUCTION AND SIEVING crushing efficiency as n wb wa c s W A A e Energy absorbed by material Bond s Law 7 Note that the definition of particle size in Bonds law is different D80 = Particle size such that 80 by weight of the sample is smaller than it

##### Orway Mineral Consultants Canada Ltd Mississauga ON

b = Correction factor for pebble crushing T 80 = Mill transfer size 80 passing µm W BM = Ball mill specific energy from T 80 1 7 mm to final product P 80 using Bond s Law kWh t W T = Total grinding mill circuit specific energy kWh t Note that K BM is the composite of EF3 EF4 and EF5 factors for ball milling Rowland 1982

##### Energy requirements in size reduction of solids - …

CALCULATION OF THE REQUIRED SEMIAUTOGENOUS MILL POWER BASED ON THE BOND WORK INDEXES O I SKARIN the Bond work indexes of crushing rod milling and ball milling For adaptation of Bond s law to the particular operating conditions Rolland introduced 8 …

##### bonds equation crushing - Mine Equipments

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