Analysis of the breakage rate function for selected process parameters in quartzite milling

摘要

The paper presents the results of studies on quartzite milling in a ball mill. The milling wasconducted in a batch system, for diversified compositions of balls. The milling product wassubjected to granulometrical, morphological and strength analyses. On the basis of the developedReid’s theory and using the Austin–Gardner equation, a form of the function circumscribing thespecific rate of comminution of selected size fractions was determined. The values of the breakagerate function bi,j for the mill’s apparatus conditions were determined. The impact was investigatedfor a variable number of grinding media contact points on the values of specific rate S and the valuesof the breakage rate function bi,j. Furthermore, the values of coefficients occurring in the equationscircumscribing the specific rate of milling S and breakage parameter bi,j were determined.