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PRELIMINARY CFD STUDIES OF A CONTINUOUS INDUSTRIAL SCALE FLUIDIZED BED ROASTER

Swagatika DASH, Rahul K. SONI

2015enfluidized bedCFDmineral processingindustrialsimulation

Abstract

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Continuous fluidized bed roasters are widely utilized in industries for the oxidation of sulphide ores. This study examines a roaster with a height of 24.5 meters, a freeboard diameter of 16.85 meters, and a bed diameter of 12.5 meters, featuring a distributor with 12,300 nozzles of 6 mm diameter, allowing for two material inlets for zinc concentrate, a gas outlet for top products, and a bottom product outlet. The air is distributed through four bottom inlets, with cooling facilitated by ten coils and water injection at the bed's top. The feed comprises approximately 60% particles sized at or below 57 microns, with an initial bed height of 0.8 meters. A 3D multiphase Eulerian-Eulerian computational fluid dynamics model was employed to analyze the flow profiles of particles in both two-phase and five-phase flows. The roaster's geometry was segmented into various zones for efficiency in computation. Preliminary simulations, conducted using 2.4 million cells, demonstrated significant differences in flow profiles between two-phase and five-phase models, particularly for finer particles, highlighting the resistance larger particles exert on the flow of smaller particles.

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Cite This Work

@article{8df62b40-ac9e-4276-a25e-aa4ceffc3b0e,
  title={PRELIMINARY CFD STUDIES OF A CONTINUOUS INDUSTRIAL SCALE FLUIDIZED BED ROASTER},
  author={Swagatika DASH and Rahul K. SONI},
  year={2015},
  language={en}
}
TY  - JOUR
TI  - PRELIMINARY CFD STUDIES OF A CONTINUOUS INDUSTRIAL SCALE FLUIDIZED BED ROASTER
AU  - Swagatika DASH
AU  - Rahul K. SONI
PY  - 2015
LA  - en
ER  -

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