Study on Mixed Packing of Flotation Column

Packing in a flotation column is one way to increase separation efficiency and effective descending flotation-column height. In this paper, the two packing mode of filling packing and sieve packing is described. Based on sieve-plate packing, a high-efficiency mixed packing mode consisting of screen-plate packing and honeycomb-tube packing has been proposed, with the packing mode optimized in the cyclonic static microbubble flotation column in the separation zone. In the mixed packing mode, the honeycomb tubes are used to reduce the vortex effect at the base of the column and weaken the radial dispersion of jetting bubbles, and the sieve plates are used to comminute bubbles in the separation zone, to lengthen the bubble migration path, and to stabilize the foam layer. The superiority of honeycomb-tube packing is analyzed using bubble-particle collision theory, and the dynamic equations of collision probability are derived. The role of mixed packing in guaranteeing mineral recovery is analyzed by the axial dispersion method. When a high-turbulence flow is maintained, a static separation environment is formed. Keywords-Column flotation; Flotation bubbles; Mineral