APPROXIMATE CALCULATION OF BREAKAGE PARAMETERS FROM BATCH GRINDING TESTS

A mathematical treatment, based largely on the work of Kapur, has been developed to obtain breakage and selection matrices from batch grindi ng tests which are valid for the initial period of the process. The me thod is illustrated using experimental results for the grinding of hyd rargillite and carbon in a laboratory scale stirred bead mill for 15 m in and it is shown that this restriction still allows application of t he method to continuous grinding processes in the mill. The breakage a nd selection functions determined by the method are shown to give a go od representation of the grinding kinetics and to lead to a normalized breakage function. Copyright (C) 1996 Elsevier Science Ltd