Investigation of breakage behavior of different mineralogical and morphological characteristic pumices

Abstract

Theobjectiveofthisstudyistoanalyzedrygrind- ing behavior of four different pumices in terms of Bond grindabilityvalue,selectionandbreakageparametersvalues. Forthispurpose,firstly,Bondgrindabilitytestweremadefor four pumices. Then, eight different mono-size fractions for each of pumices were carried out between 1.7 and 0.106mm formed by a √ 2 sieve series, and ground batch wise in a laboratory ball mill for determination of breakage parame- ters. Finally, Si and Bi, j equations were determined from the size distributions at different grinding times, and the model parameters (Si , aT ,α , γ , βand φ j) were compared for four different pumice samples.