Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade

Detalhes bibliográficos
Autor(a) principal: Melo,Gilberson Mendonça Storck
Data de Publicação: 2020
Outros Autores: Silva,Carlos Antonio da, Peixoto,Johne Jesus Mol, Oliveira,Jose Roberto, Silva,Caio Vaccari, Silva,Itavahn Alves
Tipo de documento: Artigo
Idioma: eng
Título da fonte: REM - International Engineering Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2020000400513
Resumo: Abstract Synthetic slag has been added during BOF tapping in order to modify the physicochemical properties of resulting slag with the aim of assessing the influence on inclusion density, composition and size distribution. Viscosities and activities of slag oxides were calculated by FactSage 7.2, using the FToxid database and Viscosity module. All heats were treated under vacuum in an RH degasser for 15 minutes. A comparative analysis of top slags with two levels of FeO+MnO (> 10% and ≤ 10%) was carried out. The higher level of FeO+MnO led to almost thrice more inclusion than the lower level. Top slags after treatment with synthetic slag brought the best result of inclusions features thanks to their higher CaO activity, lower viscosity and lower activity of Al2O3. These heats presented smaller inclusions and lower initial inclusion density at ladle arrival at RH. Based on these evidences, top slags with synthetic slags added during the tapping and FeO+MnO content ≤ 10% conferred the best condition in steel cleanliness.
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spelling Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel gradeslag modificationsynthetic slagvacuum degassinginclusion removalAbstract Synthetic slag has been added during BOF tapping in order to modify the physicochemical properties of resulting slag with the aim of assessing the influence on inclusion density, composition and size distribution. Viscosities and activities of slag oxides were calculated by FactSage 7.2, using the FToxid database and Viscosity module. All heats were treated under vacuum in an RH degasser for 15 minutes. A comparative analysis of top slags with two levels of FeO+MnO (> 10% and ≤ 10%) was carried out. The higher level of FeO+MnO led to almost thrice more inclusion than the lower level. Top slags after treatment with synthetic slag brought the best result of inclusions features thanks to their higher CaO activity, lower viscosity and lower activity of Al2O3. These heats presented smaller inclusions and lower initial inclusion density at ladle arrival at RH. Based on these evidences, top slags with synthetic slags added during the tapping and FeO+MnO content ≤ 10% conferred the best condition in steel cleanliness.Fundação Gorceix2020-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2020000400513REM - International Engineering Journal v.73 n.4 2020reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672020730040info:eu-repo/semantics/openAccessMelo,Gilberson Mendonça StorckSilva,Carlos Antonio daPeixoto,Johne Jesus MolOliveira,Jose RobertoSilva,Caio VaccariSilva,Itavahn Alveseng2020-09-28T00:00:00Zoai:scielo:S2448-167X2020000400513Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2020-09-28T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false
dc.title.none.fl_str_mv Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
title Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
spellingShingle Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
Melo,Gilberson Mendonça Storck
slag modification
synthetic slag
vacuum degassing
inclusion removal
title_short Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
title_full Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
title_fullStr Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
title_full_unstemmed Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
title_sort Influence of synthetic slag added during the tapping on inclusion features of a vacuum degassed LCAK steel grade
author Melo,Gilberson Mendonça Storck
author_facet Melo,Gilberson Mendonça Storck
Silva,Carlos Antonio da
Peixoto,Johne Jesus Mol
Oliveira,Jose Roberto
Silva,Caio Vaccari
Silva,Itavahn Alves
author_role author
author2 Silva,Carlos Antonio da
Peixoto,Johne Jesus Mol
Oliveira,Jose Roberto
Silva,Caio Vaccari
Silva,Itavahn Alves
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Melo,Gilberson Mendonça Storck
Silva,Carlos Antonio da
Peixoto,Johne Jesus Mol
Oliveira,Jose Roberto
Silva,Caio Vaccari
Silva,Itavahn Alves
dc.subject.por.fl_str_mv slag modification
synthetic slag
vacuum degassing
inclusion removal
topic slag modification
synthetic slag
vacuum degassing
inclusion removal
description Abstract Synthetic slag has been added during BOF tapping in order to modify the physicochemical properties of resulting slag with the aim of assessing the influence on inclusion density, composition and size distribution. Viscosities and activities of slag oxides were calculated by FactSage 7.2, using the FToxid database and Viscosity module. All heats were treated under vacuum in an RH degasser for 15 minutes. A comparative analysis of top slags with two levels of FeO+MnO (> 10% and ≤ 10%) was carried out. The higher level of FeO+MnO led to almost thrice more inclusion than the lower level. Top slags after treatment with synthetic slag brought the best result of inclusions features thanks to their higher CaO activity, lower viscosity and lower activity of Al2O3. These heats presented smaller inclusions and lower initial inclusion density at ladle arrival at RH. Based on these evidences, top slags with synthetic slags added during the tapping and FeO+MnO content ≤ 10% conferred the best condition in steel cleanliness.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2020000400513
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2020000400513
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0370-44672020730040
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Gorceix
publisher.none.fl_str_mv Fundação Gorceix
dc.source.none.fl_str_mv REM - International Engineering Journal v.73 n.4 2020
reponame:REM - International Engineering Journal
instname:Fundação Gorceix (FG)
instacron:FG
instname_str Fundação Gorceix (FG)
instacron_str FG
institution FG
reponame_str REM - International Engineering Journal
collection REM - International Engineering Journal
repository.name.fl_str_mv REM - International Engineering Journal - Fundação Gorceix (FG)
repository.mail.fl_str_mv ||editor@rem.com.br
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