Research progress in modeling multiphase flow in copper flash smelting
With the advantages of high throughput,high oxygen-rich concentration,high smelting efficiency and low environmental pollution,copper flash smelting furnaces have been successfully and widely applied in the world,so it is important to deeply study the physical chemistry phenomenon and principle of flash furnace smelting process.However,the multiphase flow interaction and smelting kinetic behavior in the flash furnace are influenced by many aspects,and it is difficult to comprehensively analyze the multiphase flow mass and heat transfer process in the furnace,obtain the fluid flow characteristics and reveal the gas-solid multiphase flow interaction law only by production experience,experimental observation and theoretical analysis,which hinders the further improvement of the smelting efficiency of the flash furnace.The rapid development of numerical simulation of computational fluid dynamics nowadays is providing efficient,accurate and intuitive results for predicting and analyzing multiphase flow problems in flash furnaces.In this paper,based on the introduction of the structure of copper flash furnace,smelting principle and theoretical model,the research results and development trend of modeling in recent years were described in terms of the kinetic reaction mechanism of copper flash smelting and the flow characteristics of the furnace.Comprehensive overview of the copper flash furnace were summarized in the spray nozzle,settler bath,uptake shaft,boiler optimization research results,which can provide guidance for flash furnace production optimization and design improvement.
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