Selection of Desulfurizing Agents and Optimization of Operational Variables in Hot Metal Desulfurization

Sidiney Nascimento Silva, Fernando Vernilli, Sergio Murilo Justus,Cla´udio Ma´rcio dos Santos Arau´jo, Elson Longo, Jose´ Arana Varela,Jose´ Milton Gabriel Lopes, and Bruno Vidal de AlmeidaThe growing demand for steels with tighter compositional specifications led theCompanhia Sideru´rgica Nacional (CSN) to develop more efficient processes. To solve thisproblem this paper aims to identify the operational variables more impacting in thedesulfurization process, specifically in torpedo car, as well as its causes and solutions.Then select and test, with laboratorial and industrial tests, desulfurizing agents based ofCaC