https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46033 Tue 12 Mar 2024 18:50:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39151 K₁ for the overall collision efficiency, was found to be optimum at the lower turbulence intensity of 4%. A maximum bubble surface loading, 0.142 was determined by fitting the model-predicted bubble velocity with available experimental data. With this maximum bubble surface loading constraint, the recovery model predicted two regimes namely a loading regime in the early flotation period and a saturated regime wherein the bubble loading capability was entirely exhausted. Simulation of a batch flotation system suggested that loss in bubble surface loading capacity occurred faster in a dense pulp compared to a dilute pulp system and the predicted recovery decreased with increasing solids concentration for the same gas volume fraction. Similar to the collision efficiency, the optimum recovery was obtained at Ti = 4%. Further, the model predicted recovery was compared to a lab scale coal flotation test and reasonable agreement was obtained.]]> Mon 20 May 2024 14:04:34 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38218 p ≤ 0.25) and bubble Reynolds numbers (50 ≤ Re_b ≤ 200). It was observed that the collision efficiency decreased with increasing the solid fraction until achieving a plateau value. This plateau was attributed to the increase in the lateral expansion of the swarm and particle velocities. The former effect decreased the collision by interception, while the latter increased the inertial effects. However, when the bubble Reynolds number increased, the particle swarm did not have enough time to accelerate or deform before reaching the bubble, and thus, the collision efficiency became insensitive to the solid fraction. The modelling approach presented provides a framework to manage the complexity of particle-bubble interactions in a multiple-particle system.]]> Fri 13 Aug 2021 15:34:48 AEST ]]>