Solid-liquid two-phase flow characteristics in a new transportation device for column flotation froth
Abstract：A new transportation device for column flotation froth was developed to improve the transportation efficiency of flotation froth with high gas holdup and viscosity.The solid-liquid two-phase flow characteristics in the device were simulated.The results show that the vortex was mainly distributed on the surface of working vane,while its direction was opposite to that of rotating impeller.The static pressure distribution was uniform in the impeller channel,while the minimum pressure was located in the central area.The particle concentration increased along the working vane and its flange with the increasing particle diameter.The full-speed of fluid and the velocity gradient increased near the outlet region with increasing of particle concentration.The wearing degree of device can be aggravated with the increasing particle diameter and concentration.The simulation results indicate that the transportation efficiency can be improved by backward vane,expansion of discharging pipe diameter and increasing the number of discharging pipes.
Keywords：column flotationfroth transportationsolid-liquid two-phase flownumerical simulation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)