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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Formato: | Documento de conferencia publisherVersion |
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The American Ceramic Society
2022
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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 |
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I68-R174-20.500.12272-7461 |
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Universidad Tecnológica Nacional |
institution_str |
I-68 |
repository_str |
R-174 |
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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 |