Thermochemical simulation of flash smelting furnace

摘要

A thermochemical model of the flash smelting furnace has been developed to predict fuel and oxygen consumption. The principal assumption of the model was that all matte, slag, dust and gaseous phases in the furnace were in thermal and chemical equilibriums. The present model was validated through measured data of Shahr-e Babak copper complex. Good agreement between predicted and measured data was achieved. In this study, the effect of air enrichment grade and air preheat temperature on the fuel consumption and required air for the oxidation and combustion reactions were examined for both heavy oil and methane. The results of parametric studies show that the rate of fuel consumption changes remarkably with the variation of working parameters of flash furnace. It was also found that the concentration of SO2 increases with oxygen content in the air. The results of the present investigation can be used for process automation and optimization.