Akademik Veri Yönetim Sistemi
22nd International Mining Congress and Exhibition of Turkey, IMCET 2011, Ankara, Türkiye, 11 - 13 Mayıs 2011, ss.367-373
In this research, particle size measurements determined by sieve analysis and image analysis (IA) was compared for a chromite sample. Comminuted chromite sample was subjected to sieve analysis and eleven narrow size fractions were obtained. Polished sections which were prepared from the representative samples of each fraction were examined by IA to determine the particle size distributions (PSDs) of fractions. Particle area (A), particle perimeter (P), maximum Feret diameter (length, L) and minimum Feret diameter (width, W) and three shape factors namely Chunkiness (Ch), Roundness (R) and Form Factor (FF), were measured on individual chromite particles. Arithmetic mean of L and W was chosen as IA size definition. Size comparisons were made between geometric means of sieve fractions versus both number and volume (mass)-based IA means before and after correction of IA diameters with three shape factors. The differences between the two methods were tried to explain by possible effect of particle shape.