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Selection of Desulfurizing Agents and Optimization of Operational Variables in Hot Metal Desulfurization
Author(s) -
Silva Sidiney Nascimento,
Vernilli Fernando,
Justus Sergio Murilo,
Araújo Cláudio Márcio dos Santos,
Longo Elson,
Varela José Arana,
Lopes José Milton Gabriel,
Vidal de Almeida Bruno
Publication year - 2013
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201200085
Subject(s) - flue gas desulfurization , selection (genetic algorithm) , process engineering , process (computing) , waste management , product (mathematics) , engineering , chemistry , computer science , mathematics , geometry , artificial intelligence , operating system
The growing demand for steels with tighter compositional specifications led the Companhia Siderúrgica Nacional (CSN) to develop more efficient processes. To solve this problem this paper aims to identify the operational variables more impacting in the desulfurization process, specifically in torpedo car, as well as its causes and solutions. Then select and test, with laboratorial and industrial tests, desulfurizing agents based of CaC 2 , CaO, CaCO 3 , and Mg to assess the cost per quantity of product desulfurized. The mixture with best results was not that one with highest content of CaC 2 . It is believed that this mixture showed better efficiency because of the increased agitation of the bath, produced by the releasing of gas from compound CaCO 3 present in this mixture.