Quantifying of particle shape differences of differently milled barite using a novel technique: Dynamic image analysis

In this study, shape analysis of barite mineral ground by various mills (ball, rod and autogenous) that are widely used in mineral processing, were achieved by the recent developed technique, namely; DIA and quantified shape differences by created different grinding in terms of the most common the shape parameters, namely; circularity (C) and bounding rectangle aspect ratio (BRAR). DIA results released that, ball milling produced particles with the highest BRAR and the lowest C values while the autogenous milling gave the highest C and the lowest BRAR values. Besides, these results, which were manually measured from microphotographs are in good agreement with results of previous studies performed by SEM technique. DIA can be used as a tool for the characterization of barite particles in some industries, where particular shape and morphology of barite is required such as paint, filler, and rubber industry.