Experimental and Theoretical Study of Particle Dispersion Phenomena in a Turbulent Gas Jet of the Flash-Smelting Process by the Image Analysis Technique

摘要

The particle dispersion phenomena in a turbulent gas jet of the flash-smelting process have been investigated. The particle number density in a nonreacting jet was measured experimentally by taking photographs of the particles in flight and counting them using the image analysis technique. Numerical computations were also performed using a mathematical model for a turbulent particle-laden gas jet. The experimental particle number density data were then compared with the predicted results of the model. Good agreement was obtained between the experimental and predicted data. The effects of the parameters such as the injector design, particle loading, and air flow rate are discussed. Optimization of the concentrate burner design can be achieved with the help of experimental and theoretical simulations as performed in this work.