DOI: 10.18503/1995-2732-2024-22-1-20-28
Abstract
The paper discusses the simulation of a heterogeneous interaction between a solid finely dispersed material and a gaseous reagent under conditions of the ideal mixing during roasting of zinc sulfide materials in fluidized bed furnaces. To describe the influence of parameters on the flow of technological processes, mathematical models with a set of input and output parameters are isolated from the simulated system and then combined into modules according to the functional connections. In the course of the study, the authors solved the problem of developing a model used to assess the states of the roasting process and calculating the performance of the technological system when changing external and internal parameters. The model was developed on the basis of an experimental and analytical description of the ongoing processes, the laws of chemical kinetics of heterogeneous reactions between the gas phase and solid particles, the equilibrium equations of substance flows in an ideal mixing reactor and the thermodynamic relationships of ideal gases. The designed mathematical model describes the mechanism of the roasting process, taking into account partial pressures of the reagents, the area of the reaction interaction and the rate of mixing the solid material in suspension. The block-modular model developed in the Matlab Simulink software package contributes to identifying the main processes and parameters in the structured system of blocks, carrying out simulation modeling, evaluating and predicting the influence of various conditions on process indicators, and optimizing the technological system. The authors combined individual processes into computational modules used to create a systematic hierarchical mathematical description as the computational blocks, resulting in a visual and well-structured system, where it is convenient to highlight the necessary parameters and processes for modeling and study. The model clearly reflects the mechanism of roasting a zinc concentrate in fluidized bed furnaces and the change in its parameters depending on the process conditions, and this is applicable for similar processes in the metallurgical and chemical production.
Keywords
mathematical modeling, ideal mixing, Simulink, roasting, fluidized bed, chemical kinetics, zinc metallurgy, numerical methods, computational modules
For citation
Zarochentsev V.M., Rutkovsky A.L., Kondratenko T.V., Makoeva A.K. Block-Modular Simulation and Study on a Bimolecular Heterogeneous Interaction During Roasting of Metal Sulfide. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2024, vol. 22, no. 1, pp. 20-28. https://doi.org/10.18503/1995-2732-2024-22-1-20-28
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