• Carlson, Johan E.
• Toivakka, Martti
• Pålsson, Bertil I.
• Stener, Jan F.
• Sand, Anders

Abstract

<p>The dynamic behaviour of μm-scale ferromagnetic particlesin suspension is of interest for various mineral beneficiationprocesses. It is, however, difficult to experimentally study suchprocesses at the particle-level. In these instances it can beadvantageous to resort to suitable particle simulation methods.</p><p>Stokesiandynamics is a mesh-free numerical technique developed for suspensionsof nm to mm size particles. The method inherently considers hydrodynamicinteractions, but additional interaction models can be includeddepending on the system under investigation. We here present a Stokesiandynamics (SD) implementation, which allows for simulation of the motionof suspended magnetic particles in presence of an external magneticfield. The magnetic interaction model includes particle-fieldinteractions as well as pairwise interactions between magnetisedparticles.</p><p>Simulations are compared with experimentsusing a laboratory-scale flow cell. The method is shown to be realisticfor studying ferromagnetic suspensions in mineral processingapplications, and can be useful in understanding and predicting theefficiency of mineral separation processes.</p>

Topics

• impedance spectroscopy
• mineral
• simulation