A Eulerian-dense discrete phase model (DDPM) for simulation of a 8.4 solids mass of iron ore particles (500 μm, hematite and quartz) in a spiral concentrator - A preliminary study

摘要

A multi-fluid Eulerian model combined with a dense discrete phase model (DDPM) was used to simulate water and iron ore particles (hematite and quartz) flowing in a spiral concentrator. The particles' diameter was set to 500 ?m and the slurry mass solid concentration at 8.4 %. The model solves for sets of conservation equations of mass and momentum for each continuous phase (air, water) in the Eulerian domain, coupled with a source term in the momentum equation to track the solid particle forces calculated in the Lagrangian domain by the discrete element method. This highlights the potential to simulate high particle concentrations. Flow behaviour, particle velocities and particles migration are discussed. This research demonstrates the potential of the Eulerian-DDPM modelling approach for the simulation of spiral concentrators, and other density-based concentrators.