Research on the mixing efficiency of gangue particles and slurry by the arrangement of impellers in the mixing tank

This study systematically investigates the impact of impeller arrangements on the mixing efficiency of gangue particles and slurry through experimental validation and numerical simulations. The research focuses on the interplay between impeller quantity, positional layout, and rotational speed to optimize particle-fluid homogeneity. Results demonstrate that increasing the stirring speed from 100 to 200 rpm enhances the average mixing concentration in the central region by 38.5%, confirming the critical role of rotational velocity in accelerating gangue-slurry integration. Notably, a single centrally positioned impeller operating at 200 rpm achieves mixing uniformity comparable to a dual-impeller system while reducing cycle time by 21.2%. These findings redefine optimal impeller configurations for industrial applications, emphasizing efficiency and energy conservation.