Abstract
Abstract This paper is to present the study on the mechanism involved in Trapped Vortex Magnetic Separation (TVMS). In a single wire system, a pair of stable and symmetrical eddies can be induced behind the wire only when Reynolds number is between 6 and 40. This study used a CFX software package and a high-speed video camera system to investigate the hydrodynamic behavior in a multi-wire system. It was revealed that a pair of stable and symmetrical vortices can be trapped between two cylinders even when Reynolds number reached 300. Magnetic particles can be captured in the trapped vortex regions in TVMS system. It can produce not only the higher selectivity, but also the higher processing rate. The experimental results of some industrial ores obtained with TVMS system demonstrated the advantages of TVMS over High Gradient Magnetic Separation (HGMS).
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