Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

The centrifugal mill is a high-intensity media mill that uses centrifugal forces by gyrating the mill tube in a circle. The mill charge motion is quite different depending on the ratio of the gyration diameter to the mill diameter (G/D ratio). With this unique feature, centrifugal mill can provide proper breakage mechanism for minerals having different structure. In this study, wet grinding experiments were conducted in a centrifugal mill with various G/D ratios (0.4, 0.6, 1.0) and dispersant dosage (0, 1, 2 wt%) to find out the optimum grinding conditions for three minerals; limestone, illite, talc. It was found that the optimum G/D ratio in terms of the specific energy consumption was different for the minerals. And, the correlation of specific surface area between BET method and size distribution proved that centrifugal mill used in this study has limitation to grind particles finer than 0.1μm.