Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables

Autores
Tomba Martinez, Analia Gladys; Luz, A.P.; Braulio, M.A.L.; Sako, E.Y.; Pandolfelli, V.C.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work revisits the proposed mechanisms presented in the literature for CA6 formation in Al2O3-MgO and Al2O3-MgAl2O4 castables bonded with calcium aluminate cement. New experimental tests, thermodynamic simulations and re-evaluation of the chemical composition and microstructural aspects observed for samples fired in the temperature range of 1150°C to 1500°C were carried out. Based on these data, a new interpretation of the CA6 generation process, as well as the features which influence the location and morphology of this phase were proposed. CA6 formation via solid and liquid states are suggested to take place in all evaluated compositions, where the former (solid-state) is the main reaction predicted for the silica-free refractories (AM0MS and AS0MS), whereas the liquid-state one prevails in the AM1MS and AS1MS materials. The CA6 crystal morphology should be affected by these different reaction mechanisms. According to the experimental results, it was also discussed the role of the calcium hexaluminate features in the overall corrosion behavior of the designed refractories when they were placed in contact with molten slag at high temperatures. Such aspects have not been previously reported in published papers related to this subject.
Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Luz, A.P.. Universidade Federal do São Carlos; Brasil
Fil: Braulio, M.A.L.. Universidade Federal do São Carlos; Brasil
Fil: Sako, E.Y.. Saint-Gobain; Brasil
Fil: Pandolfelli, V.C.. Universidade Federal do São Carlos; Brasil
Materia
Refractory Castable
Calcium Hexaluminate
Cement
Alumina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31810
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31810
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Revisiting CA6 formation in cement-bonded alumina-spinel refractory castablesTomba Martinez, Analia GladysLuz, A.P.Braulio, M.A.L.Sako, E.Y.Pandolfelli, V.C.Refractory CastableCalcium HexaluminateCementAluminahttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2This work revisits the proposed mechanisms presented in the literature for CA6 formation in Al2O3-MgO and Al2O3-MgAl2O4 castables bonded with calcium aluminate cement. New experimental tests, thermodynamic simulations and re-evaluation of the chemical composition and microstructural aspects observed for samples fired in the temperature range of 1150°C to 1500°C were carried out. Based on these data, a new interpretation of the CA6 generation process, as well as the features which influence the location and morphology of this phase were proposed. CA6 formation via solid and liquid states are suggested to take place in all evaluated compositions, where the former (solid-state) is the main reaction predicted for the silica-free refractories (AM0MS and AS0MS), whereas the liquid-state one prevails in the AM1MS and AS1MS materials. The CA6 crystal morphology should be affected by these different reaction mechanisms. According to the experimental results, it was also discussed the role of the calcium hexaluminate features in the overall corrosion behavior of the designed refractories when they were placed in contact with molten slag at high temperatures. Such aspects have not been previously reported in published papers related to this subject.Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Luz, A.P.. Universidade Federal do São Carlos; BrasilFil: Braulio, M.A.L.. Universidade Federal do São Carlos; BrasilFil: Sako, E.Y.. Saint-Gobain; BrasilFil: Pandolfelli, V.C.. Universidade Federal do São Carlos; BrasilElsevier2017-07-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31810Pandolfelli, V.C.; Sako, E.Y.; Luz, A.P.; Tomba Martinez, Analia Gladys; Braulio, M.A.L.; Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables; Elsevier; Journal of the European Ceramic Society; 37; 15; 8-7-2017; 5023-50340955-2219CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jeurceramsoc.2017.07.003info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S095522191730479X?via%3Dihubinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:09Zoai:ri.conicet.gov.ar:11336/31810instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:48:09.745CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
title Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
spellingShingle Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
Tomba Martinez, Analia Gladys
Refractory Castable
Calcium Hexaluminate
Cement
Alumina
title_short Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
title_full Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
title_fullStr Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
title_full_unstemmed Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
title_sort Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables
dc.creator.none.fl_str_mv Tomba Martinez, Analia Gladys
Luz, A.P.
Braulio, M.A.L.
Sako, E.Y.
Pandolfelli, V.C.
author Tomba Martinez, Analia Gladys
author_facet Tomba Martinez, Analia Gladys
Luz, A.P.
Braulio, M.A.L.
Sako, E.Y.
Pandolfelli, V.C.
author_role author
author2 Luz, A.P.
Braulio, M.A.L.
Sako, E.Y.
Pandolfelli, V.C.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Refractory Castable
Calcium Hexaluminate
Cement
Alumina
topic Refractory Castable
Calcium Hexaluminate
Cement
Alumina
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This work revisits the proposed mechanisms presented in the literature for CA6 formation in Al2O3-MgO and Al2O3-MgAl2O4 castables bonded with calcium aluminate cement. New experimental tests, thermodynamic simulations and re-evaluation of the chemical composition and microstructural aspects observed for samples fired in the temperature range of 1150°C to 1500°C were carried out. Based on these data, a new interpretation of the CA6 generation process, as well as the features which influence the location and morphology of this phase were proposed. CA6 formation via solid and liquid states are suggested to take place in all evaluated compositions, where the former (solid-state) is the main reaction predicted for the silica-free refractories (AM0MS and AS0MS), whereas the liquid-state one prevails in the AM1MS and AS1MS materials. The CA6 crystal morphology should be affected by these different reaction mechanisms. According to the experimental results, it was also discussed the role of the calcium hexaluminate features in the overall corrosion behavior of the designed refractories when they were placed in contact with molten slag at high temperatures. Such aspects have not been previously reported in published papers related to this subject.
Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Luz, A.P.. Universidade Federal do São Carlos; Brasil
Fil: Braulio, M.A.L.. Universidade Federal do São Carlos; Brasil
Fil: Sako, E.Y.. Saint-Gobain; Brasil
Fil: Pandolfelli, V.C.. Universidade Federal do São Carlos; Brasil
description This work revisits the proposed mechanisms presented in the literature for CA6 formation in Al2O3-MgO and Al2O3-MgAl2O4 castables bonded with calcium aluminate cement. New experimental tests, thermodynamic simulations and re-evaluation of the chemical composition and microstructural aspects observed for samples fired in the temperature range of 1150°C to 1500°C were carried out. Based on these data, a new interpretation of the CA6 generation process, as well as the features which influence the location and morphology of this phase were proposed. CA6 formation via solid and liquid states are suggested to take place in all evaluated compositions, where the former (solid-state) is the main reaction predicted for the silica-free refractories (AM0MS and AS0MS), whereas the liquid-state one prevails in the AM1MS and AS1MS materials. The CA6 crystal morphology should be affected by these different reaction mechanisms. According to the experimental results, it was also discussed the role of the calcium hexaluminate features in the overall corrosion behavior of the designed refractories when they were placed in contact with molten slag at high temperatures. Such aspects have not been previously reported in published papers related to this subject.
publishDate 2017
dc.date.none.fl_str_mv 2017-07-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31810
Pandolfelli, V.C.; Sako, E.Y.; Luz, A.P.; Tomba Martinez, Analia Gladys; Braulio, M.A.L.; Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables; Elsevier; Journal of the European Ceramic Society; 37; 15; 8-7-2017; 5023-5034
0955-2219
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31810
identifier_str_mv Pandolfelli, V.C.; Sako, E.Y.; Luz, A.P.; Tomba Martinez, Analia Gladys; Braulio, M.A.L.; Revisiting CA6 formation in cement-bonded alumina-spinel refractory castables; Elsevier; Journal of the European Ceramic Society; 37; 15; 8-7-2017; 5023-5034
0955-2219
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jeurceramsoc.2017.07.003
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S095522191730479X?via%3Dihub
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842268906808410112
score 13.13397

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