The collision efficiency of small particles with spherical air bubbles

摘要: Trajectories are calculated for particles in the path of a spherical bubble rising an infinite pool liquid. From grazing trajectories, collision efficiences corresponding to values particle inertia parameter K down 0·001 and gravity G up 0·3 both Stokes potential flow fields around bubble. Limiting efficiency → 0 derived shown be same solutions. The solutions equations motion verified experimentally existence optimum size recovering ore by flotation is demonstrated. simplified description assemblage, it that with bubbles swarm can several times as large those from single sphere model even at separations.