Phase formation in refractory lining of Steel Ladle during
the campaign.
R. R. Barreto (1), B. A. Vidal(1), F. Vernilli(1), Vinicius F. Nascimento(2)
(1)
(2)
Universidade São Paulo, Lorena, SP, Brazil
Companhia Siderúrgica Nacional, RJ, Brazil
Due to the wide use of refractory materials used in steel ladles of steelmakers and its strong
economic impact on the cost of steel production, it became necessary to understand the
phenomena of wear of these materials. The goal of this work is a preliminary study of phase
formation by X-ray diffraction analysis in two types of refractories currently used in steel
ladle, Al2O3-MgO-C applied on hot metal line and MgO-C applied on slag line. The work was
carried out comparing the refractories materials before and after use. The results showed the
formation of news phases mainly in refractory both material analyzed.
Keywords: Steel ladle, Wear mechanisms, Refractory, X-ray diffraction.
Work Supported by:
[1] BRUNDLE, C. Richard; EVANS Jr., Charles A.; WILSON, Shaun, Encyclopedia of
materials characterization – Surfaces, Interfaces, Thin Films. 1992.
[2] CINTRA, G. B. et al. Espinelização in-situ e seu efeito na resistência ao choque térmico
de concretos refratários. Separata de: Revista Cerâmica, n. 54, p. 287 – 295, 2008.
[3] KITAI, T. Fundamental science of refractories: major components, their crystal structures
and properties: Spinel Part 2. Taikabutsu 1994; p. 383 – 389.
[4] LEE, W. E et al. Microstructural analysis of corrosion mechanisms in oxide-spinel
steelmaking refractories. Proc. 2nd Intl. Symposium on Advances in Refractories for the
Metallurgical Industries, Montreal, Canada, 1996 : p. 453 – 465.
[5] TROMMER, R.M. et al. Identificação e avaliação dos mecanismos de ataque da escória
SiO2-CaO-Al2O3-MgO em tijolos refratários de MgO-C, Separata de: Revista Matéria, n. 1,
p. 56 – 64, 2008.
E-mail: rrb@ppgem.eel.usp.br
Escola de Engenharia de Lorena, Universidade São Paulo
Departamento de Engenharia de Materiais
Caixa Postal 116 – CEP: 12600-970 Lorena - SP
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Phase formation in refractory lining of Steel Ladle during the