Artículo
Basic slag corrosion of alumina–magnesia–carbon refractory bricks containing Al and Si antioxidants
Calvo, Walter Andrés
; Dignani, María Luján; Galliano, Pablo German
; Brandaleze, Elena; Tomba Martinez, Analia Gladys
Fecha de publicación:
03/2022
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
International Journal Of Applied Ceramic Technology
ISSN:
1546-542X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The slag-corrosion behavior of two alumina–magnesia–carbon refractories (AMC) with different antioxidants (Si and Al) has been comparatively studied by means of thermodynamic simulation and laboratory tests. A cup test (static) at 1723 K and 1873 K and dipping test (dynamic) at 1873 K were carried out using a steelmaking ladle slag. An iterative method that considers the change of the liquid’s composition while it penetrates the refractorywas employed for the thermodynamic calculation. The simulation as well as the static tests showed similar performance between both refractories (5% ofwear at 1723 K and 6% at 1873 K). In spite of the type of antioxidant, the material with smaller particles of magnesia exhibited better performance in the dynamic test, with 55% less wear than the other AMC brick. This behavior was attributed to the faster MgAl2O4 spinel formation, which increased the material’s cohesion, especially the matrix, during the heating stage. The Si antioxidant improved oxidation resistance, although it did not have a positive effect on the corrosion resistance of the material in any of the performed tests.
Palabras clave:
Al2O3-MgO-C
,
antioxidants
,
refractories
,
slag corrosion
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Identificadores
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Calvo, Walter Andrés; Dignani, María Luján; Galliano, Pablo German; Brandaleze, Elena; Tomba Martinez, Analia Gladys; Basic slag corrosion of alumina–magnesia–carbon refractory bricks containing Al and Si antioxidants; Wiley Blackwell Publishing, Inc; International Journal Of Applied Ceramic Technology; 19; 4; 3-2022; 2331-2343
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