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Modeling of Solid-fluid Interactions in Inclined Open Channels : Modeling of Flowing Film Concentrators
Bok av Arun Majumder
The mineral processing research community
has devoted enormous efforts to the modeling of mineral
separators. While many efforts have been made to use only
fundamental physics as a basis for the models, fluid flow
patterns in separators are complex and the motion of
particle swarms through fluids is difficult to describe.
Even though computer codes for computational fluid dynamics
are now very powerful, a reliable means of calculating the
hindered settling velocity of a specific particle type
within a polydisperse and polydense particle mixture has
proved to be elusive. It is however an absolutely
fundamental prerequisite to almost all model structures. In
an effort to test the extent to which fundamental fluid
mechanics can provide a prediction of particle separation,
a study on a simple parallel-sided sluice has been carried
out using glass bead and ilmenite mixtures at various
particle concentrations and flow rates. Great care was
taken to devise a flow splitter at the end of the sluice
that permitted accurate measurement of the fluid flow
profile and collection of slurry samples, allowing
evaluation of the particle species concentration profiles.