Effect of Bubble-Particle Interactions on Collection Efficiency of Froth Flotation

Shahbazi, Behzad

doi:10.22111/jesm.2024.47721.1013

Effect of Bubble-Particle Interactions on Collection Efficiency of Froth Flotation

Document Type : Original Research Paper

Author

Behzad Shahbazi

Mining Engineering Department, Tarbiat Modares University, Tehran, Iran

10.22111/jesm.2024.47721.1013

Abstract

Bubble-particle interactions have a great effect on the efficiency of particle collection in froth flotation and by using them, the flotation rate constant (k) can be increased. In this research, relationship between k and bubble surface area flux (Sb), were investigated using bubble-particle interactions. Bubble-particle collision, attachment and detachment efficiencies were calculated under different flow regimes. Flotation rate increased with increasing of both the collision and attachment efficiencies. Maximum Stokes collision efficiency was obtained as 81.57% with the Sb of 27.43 1/s, particle size of -500+420 µm and k of 0.97 1/min. Maximum Stokes attachment efficiency was obtained as 55.9% with the particle size of -37 µm, Sb of 34.2 1/s and k of 1.65 1/min. Maximum detachment efficiency was obtained as 98.54% with the particle size of -500+420 µm, Sb of 12.16 1/s and k of 0.44 1/min. So, Bubble-particle collection efficiency was increased with increasing of the Sb. Thus, increasing of the k can be attributed to increasing of both the collision and attachment efficiencies due to increasing of the Sb.

Keywords