W is the work index measured in a laboratory ball mill (kilowatt-hours per metric or short ton) P 80 is the mill circuit product size in micrometers; F 80 is the mill circuit feed size in micrometers Rod mill A rotating drum causes friction and attrition between steel rods and ore particl
Know MoreThis Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore sampl These equation application methods are used to process
Know MorePerform a bond ball mill work index determination of the desired sample at any closing size, in this case is New Afton ore at 150 µm 2 Compute the new ‘K’ coefficient using equation (5) above The P80 and F80 values are obtained from the screening result An exponent of ,
Know MoreSee 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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