Characterization of MgO-C bricks with different fused magnesia aggregates

The influence of fused magnesia (FM) on the corrosion resistance, mechanical behavior and thermal evolution of MgO-C bricks was studied. Three qualities of electrofused magnesia were used as main raw material to form three bricks identified as A (purity 97.6 wt%), B (purity 98.2 wt%) and C (purity 9...

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Autores principales: Benavidez, Edgardo, Lagorio, Yamila
Formato: Documento de conferencia publisherVersion
Lenguaje:Inglés
Publicado: The American Ceramic Society 2022
Materias:
MgO-C
Bricks
Corrosión
Mechanical
properties
Acceso en línea:https://ceramics.org/event/pan-american-ceramics-congress-and-ferroelectrics-meeting-of-americas-pacc-fmas-2022-archive
http://hdl.handle.net/20.500.12272/7461
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-7461
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic MgO-C
Bricks
Corrosión
Mechanical
properties
spellingShingle MgO-C
Bricks
Corrosión
Mechanical
properties
Benavidez, Edgardo
Lagorio, Yamila
Characterization of MgO-C bricks with different fused magnesia aggregates
topic_facet MgO-C
Bricks
Corrosión
Mechanical
properties
description The influence of fused magnesia (FM) on the corrosion resistance, mechanical behavior and thermal evolution of MgO-C bricks was studied. Three qualities of electrofused magnesia were used as main raw material to form three bricks identified as A (purity 97.6 wt%), B (purity 98.2 wt%) and C (purity 98.7 wt%). Si and Al were used as antioxidants and phenolic resin was chosen as binder. Chemical resistance was evaluated through a cup test at 1600°C (2 h) using a steelmaking slag from LD converter. The mechanical evaluation was performed through compression tests at room temperature (air) and at 1400°C (argon). From the stress-strain curves different mechanical parameters were determined. Dilatometries up to 1400°C (in Ar) were performed to evaluate the thermal evolution. Microstructures were observed by optical microscopy and by SEM/EDS. The grain size of magnesia aggregates was determined. Besides, density and porosity of bricks were measured. Brick C presented a higher resistance to slag corrosion due to its highest purity and largest grain size of FM. At 1400°C, brick A presented the highest fracture strain (εF) and fracture energy (UF). Thus, the corrosion resistance increases and the fracture parameters decrease when the purity of FM grains increases.
format Documento de conferencia
publisherVersion
author Benavidez, Edgardo
Lagorio, Yamila
author_facet Benavidez, Edgardo
Lagorio, Yamila
author_sort Benavidez, Edgardo
title Characterization of MgO-C bricks with different fused magnesia aggregates
title_short Characterization of MgO-C bricks with different fused magnesia aggregates
title_full Characterization of MgO-C bricks with different fused magnesia aggregates
title_fullStr Characterization of MgO-C bricks with different fused magnesia aggregates
title_full_unstemmed Characterization of MgO-C bricks with different fused magnesia aggregates
title_sort characterization of mgo-c bricks with different fused magnesia aggregates
publisher The American Ceramic Society
publishDate 2022
url https://ceramics.org/event/pan-american-ceramics-congress-and-ferroelectrics-meeting-of-americas-pacc-fmas-2022-archive
http://hdl.handle.net/20.500.12272/7461
work_keys_str_mv AT benavidezedgardo characterizationofmgocbrickswithdifferentfusedmagnesiaaggregates
AT lagorioyamila characterizationofmgocbrickswithdifferentfusedmagnesiaaggregates
bdutipo_str Repositorios
_version_ 1764820552734736384

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