Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/2176-1523.20232973
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

Eco-friendly zero carbon Al2O3-SiC brick for hot metal ladle (HML)

José Alvaro Previato Sardelli; Carlos Pagliosa Neto; Tiago Moreira Pereira; Julia Freitas Macedo; Vanderlucio Geraldo Madalena

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Abstract

For many years, hot metal ladles (HML) have been lined with Al2O3-SiC-C (ASC) bricks due to their excellent resistance to acidic slag in the ironmaking process. Although these bricks present standard performance for this application, increasing demands for extended equipment lifetime, simplified and easy recycling (no AOX), and zero fume emissions emerge as key points for new technological advances in the steelmaking industry. A novel tempered C-free Al2O3-SiC (AS-K) brick with engineered microstructure and special binder was developed to reach these environmental requirements. This work presents a comparison of the microstructural, physical, mechanical, and thermomechanical properties of AS-K and ASC technologies and evaluates the field trial followed by a 3D laser scanning technology to measure the wear rate and the performance of this new product concept.

Keywords

Hot metal ladle (HML); C-free brick; Al2O3-SiC; 3D laser scanning

Referências

1. Nag M, Nag B, Gangopadhyay S, Panigrahi P, Singh B. Exploration of new quality refractory to improve hot metal ladle refractory performance. Engineering Failure Analysis. 2021;125:105384.

2. Pagliosa C. Novel unburned alumina-magnesia bricks for ULC steel: zero-carbon and zero-fume refractory. In: Proceedings AISTech 2016; Pittsburgh. Warrendale: Association for Iron & Steel Technology; 2016. p. 1339-1346.

3. Macedo JF, Ribeiro AS, Nonaka F, Guimaraes BF, Morais VL, Avila HC. How 3D scan is adding value and performance to refractory lining inside Steel Industry. In: AISTech Technology Conference, Pittsburgh. Warrendale: Association for Iron & Steel Technology; 2022.

4. Sardelli JAP, Borges OH, Pagliosa C, Pandolfelli VC. In-situ Al2O3-MgO and Al2O3-ZnO spinel formation: the Kirkendall effect on physical and mechanical properties. Aachen: ALE; 2022.

5. Mukhopadhyay S, Chatterjee S, Kanda MK. Eco-friendly smokeless Al2O3-SiC brick for hot metal ladle. China’s Refractries. 2008;17(1).


Submetido em:
30/08/2023

Aceito em:
18/12/2023

65b9478ea953955b956c2023 tmm Articles
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Tecnol. Metal. Mater. Min.

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