In this section
@article{Bhutani:2020:10.1016/j.seppur.2019.116252,
author = {Bhutani, G and Brito, Parada PR},
doi = {10.1016/j.seppur.2019.116252},
journal = {Separation and Purification Technology},
title = {A framework for polydisperse pulp phase modelling in flotation},
url = {http://dx.doi.org/10.1016/j.seppur.2019.116252},
volume = {236},
year = {2020}
}
TY - JOUR
AB - Froth flotation is one of the most widely-used mineral processing operations. The pulp zone in flotation tanks is polydisperse ingeneral and serves as a medium for the interaction between the solid particles and the gas bubbles in a liquid continuum, leadingto particle–bubble attachment/detachment and bubble coalescence/breakage phenomena. To better predict the hydrodynamics andinform the design of e cient flotation equipment, it is therefore important to accurately model and simulate the evolution of the sizedistribution of the dispersed phases. This has created an urgent need for a framework that can model the pulp phase in an e cientmanner, which is not currently available in the literature. The available software products are not e cient enough to allow for atractable modelling of industrial-scale flotation cells and in some cases they cannot model the polydispersity of the dispersed phaseat all. This work presents an e cient numerical framework for the macroscale simulation of the polydisperse pulp phase in frothflotation in an open-source finite element computational fluid dynamics (CFD) code that provides an e cient solution method usingmesh adaptivity and code parallelisation. A (hybrid finite element–control volume) finite element framework for modelling the pulpphase has been presented for the first time in this work. An Eulerian–Eulerian turbulent flow model was implemented in this workincluding a transport equation for attached and free solid particles. Special care was taken to model the settling velocity of the freesolids and the modification of the liquid viscosity due to the presence of these particles. Bubble polydispersity was modelled usingthe population balance equation (PBE), which was solved using the direct quadrature method of moments (DQMOM). Appropriatefunctions for bubble coalescence and breakage were chosen in the PBE. Mesh adaptivity was applied to the current problem toproduce fully-unstructured anisotropic meshes, whi
AU - Bhutani,G
AU - Brito,Parada PR
DO - 10.1016/j.seppur.2019.116252
PY - 2020///
SN - 0950-4214
TI - A framework for polydisperse pulp phase modelling in flotation
T2 - Separation and Purification Technology
UR - http://dx.doi.org/10.1016/j.seppur.2019.116252
UR - http://hdl.handle.net/10044/1/74652
VL - 236
ER -