Özet:

The purpose of this study is not only to examine the shapes of representative samples taken from coarse and fine shaking table concentration circuits in a chromite concentration plant (Aksu Group Mining Industry Co. Inc.) operating in the Kangal region of Sivas, with dynamic image analysis (DIA) that gives fast and reliable results, but also to compare their results with scanning electron microscope (SEM) and stereo-microscope analyzes and to interpret the effect of their shapes on table separation. Based on more than 4 successive measurements for each sample by counting more than 10,000 particles, concentrate products (at 95% confidence interval) have the highest Circularity (C) values compared to other products, whereas tailing products have the lowest C values (elongated particles) compared to other products. The difference in shape of products is attributed to different movements of the particles on the table surface. In addition, DGA images, SEM images and stereo-microscope images support the DGA results and are compatible with previous studies in the literature. The results show that not only particle density but also particle shape has an effect on the shaking table separation at the same size range. The results of this study will shed light on the fact that higher separation efficiency can be obtained by preferring grinding systems that produce more rounded grains for feeding into shaking tables in chromite gravity enrichment circuits.

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