Abstract:In this paper, a jet microbubble generator was used and a mineral flotation experiment system was established. Based on the three-phase flow characteristics of the microbubble generator, a three-phase flow dynamics model based on a two-fluid model was proposed. Based on the three-phase flow dynamics model under normal temperature and pressure conditions, the three-phase flow behaviors of gas-liquid, solid-liquid and fluid in the jet micro-bubble generator were numerically simulated using CFD theory and fluent analysis software. The three-phase flow in the jet micro-bubble generator was analyzed. Field pressure, speed and three-phase distribution and other important parameters. The results show that the continuous decrease of the cross-sectional area of the nozzle leads to an increase in pressure and a very severe interaction between the three phases. The microbubbles are basically generated here; the static pressure gradually decreases from the inlet to the outlet in the axial end of the microbubble generator. The radial distribution of static pressure inside the throat is relatively uniform, which is very suitable for three-phase full mixing of gas, solid and liquid. The research method of this article can provide certain reference for the development of related equipment.