Powered by Blucher Proceedings

Seminário de Aciaria, Fundição e Metalurgia de Não-ferrosos


ISSN 2594-5300

Título

THE CALCIUM CARBIDE IN SECONDARY STEELMAKING REFINING – LADLE FURNACE AND STIRRING STATION OF A BRAZILIAN STEELMAKING

THE CALCIUM CARBIDE IN SECONDARY STEELMAKING REFINING – LADLE FURNACE AND STIRRING STATION OF A BRAZILIAN STEELMAKING

Autoria

DOI

10.5151/2594-5300-42213

Downloads

0 Downloads

Resumo

The calcium carbide alloy is composed by CaC2 and CaO, mainly. CaC2 is a reconized deoxidizer agent in the tapping and a desulfurizer agent in the pig iron. In this article, the calcium carbide was tested as desulfurizer agent in the stirring station and ladle furnace at the secondary refining in the steelmaking process. Tested heats prove that effective desulfurization only occurs after deoxidation of the steel. Therefore, it is recommended that additions to contemplate the purpose of desulfurization begin during steel tapping. The direct benefit of this practice is to consider aluminum strictly as an alloying element, reducing the inclusion level of this element for deoxidation.

 

THE CALCIUM CARBIDE ALLOY IS COMPOSED BY CAC2 AND CAO, MAINLY. CAC2 IS A RECONIZED DEOXIDIZER AGENT IN THE TAPPING AND A DESULFURIZER AGENT IN THE PIG IRON. IN THIS ARTICLE, THE CALCIUM CARBIDE WAS TESTED AS DESULFURIZER AGENT IN THE STIRRING STATION AND LADLE FURNACE AT THE SECONDARY REFINING IN THE STEELMAKING PROCESS. TESTED HEATS PROVE THAT EFFECTIVE DESULFURIZATION ONLY OCCURS AFTER DEOXIDATION OF THE STEEL. THEREFORE, IT IS RECOMMENDED THAT ADDITIONS TO CONTEMPLATE THE PURPOSE OF DESULFURIZATION BEGIN DURING STEEL TAPPING. THE DIRECT BENEFIT OF THIS PRACTICE IS TO CONSIDER ALUMINUM STRICTLY AS AN ALLOYING ELEMENT, REDUCING THE INCLUSION LEVEL OF THIS ELEMENT FOR DEOXIDATION.

Palavras-chave

CaC2, Deoxidation, Desulfurization, Ladle Furnace, Stirring Station

CaC2, Deoxidation, Desulfurization, Ladle Furnace, Stirring Station

Como citar

Rodrigues, Ivan; Motta, Leonardo Silva; Maia, Breno Totti; Nascimento, Leandro Miranda. THE CALCIUM CARBIDE IN SECONDARY STEELMAKING REFINING – LADLE FURNACE AND STIRRING STATION OF A BRAZILIAN STEELMAKING, p. 382-390. In: 54º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos, São Paulo, Brasil, 2025.
ISSN: 2594-5300, DOI 10.5151/2594-5300-42213