Mathematical model of multistage and multiphase chemical reactions in flash furnace

来源期刊：中国有色金属学报(英文版)2003年第1期

论文作者：李欣峰 梅炽 周萍 韩向利 肖田元

文章页码：203 - 207

Key words：flash smelting furnace; mathematical model; copper; simulation; CFD

Abstract: A mathematical model of multistage and multiphase reactions in flash smelting furnace, which based on the description of chemical reactions and reaction rate, is presented. In this model, main components of copper concentrate are represented as FeS₂ and CuFeS based on experiment, intermediate products are assumed to be S₂ and FeS, and the final products are assumed as FeS, FeO, SO₂, Cu₂S, FeO and FeO(SiO₂)₂. The model incorporates the transport of momentum, heat and mass, reaction kinetics between gas and particles, and reactions between gas and gas. The k-ε model is used to describe gas phase turbulence. The model uses the Eulerian approach for the gas flow equations and the Lagrangian approach for the particles. The coupling of gas and particle equations is performed through the particle source in cell(PSIC) method. Comparison between the model predictions and the plant measurements shows that the model has high reliability and accuracy.