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The correlation coefficient of 0.93 between the friability value S1 and Bond’s work index Wi = 18.193 Ln S1 66.747 has been found. The brittleness test results may not be very close to the work index values as in brittleness tests relatively large grains are ground whereas the HGI values grinding of fine –grain samples involved.

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Nov 25 2021 As referred to earlier the size specific energy calculation has typically been conducted at a marker size of 75 µm 5 6 7 Bond F.C. 1961. Crushing and Grinding Calculations Parts 1 and 2. British Chemical Engineering 6 378 385 543 548. Morrell S. 2009. Predicting the overall specific energy requirement of crushing high pressure

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Coarse grinding has RRs below 8 1 Fine grinding can exceed 100 1 Grinding of coarse particles in which the increase in surface area per unit mass is relatively small Kick s Law is a reasonable approximation Rittinger’s law States that the energy required for size reduction is proportional to the change in

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F c = M f x S f 10 where F c is the crushing of the design M f is the Mass of Roller which is 220 N S f is the factor of safety which is 1.7 F c = 220 x 1.7 F c is 374 k. Torque Transmitted to the Crusher The torque transmitted to the crusher was calculated from equation 11 Tipler 2004 T = F x r 11 where T is the torque

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B Ond F.c. Crushing And Grinding Calculations Mar 01 2012 A tremendous amount of energy is consumed during crushing and grinding much of this Grinding energy calculations starting from first principles would optimally consider the Kick for particles greater than 50 mm in diameter Bond for particles smaller than 50 mm ..

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Calculation of the liberation was made by Gaudin obtaining a particle size equal to 0.125 mm assuming there is a variation of up to 3 . Therefore the BOND F.C. 1961. Crushing and grinding calculations. Allis Chaimers Publication No. 07R9235B Revised .

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In the 1930s through early 1950s Bond developed a new theory of the 39 Bond Work Index 39 which relates power consumption in crushing and as in quot Rittinger 39 s law quot quot Kick 39 s law quot and quot Bond 39 s law quot are sometimes . A New Approach to the Calculation of Work Index and the Potential

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As a continuation of a previous research work carried out to estimate the Bond work index wi by using a simulator based on the cumulative kinetic model CKM a deeper analysis was carried out to determine the link between the kinetic and energy

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