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Advances in Materials Science and Engineering
Volume 2012, Article ID 969727, 5 pages
Research Article

Mathematical Model of Hot Metal Desulfurization by Powder Injection

Departamento de Metal-Mecánica, Instituto Tecnológico de Saltillo, 25280 Saltillo, COAH, Mexico

Received 30 June 2011; Accepted 25 November 2011

Academic Editor: Peter Majewski

Copyright © 2012 Yolanda Cepeda Rodríguez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Although there have been a numerous number of studies on mathematical model of hot metal desulfurization by deep injection of calcium carbide, the research field as a whole is not well integrated. This paper presents a model that takes into account the kinetics, thermodynamics, and transport processes to predict the sulfur levels in the hot metal throughout a blow. The model could be utilized to assess the influence of the treatment temperature, rate of injection, gas flow rate, and initial concentration of sulfur on the desulfurization kinetics. In the second part of this paper an analysis of the industrial data for injection of calcium carbide using this model is described. From a mathematical model that describes the characteristics of a system, it is possible to predict the behavior of the variables involved in the process, resulting in savings of time and money. Discretization is realized through the finite difference method combined with interpolation in the border domain by Taylor series.