Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo de conferência |
Título da fonte: | Repositório Institucional do IPEN |
Texto Completo: | http://repositorio.ipen.br/handle/123456789/27493 |
Resumo: | In this work magnesium orthotitanate (Mg2TiO4) and calcium titanate (CaTiO3) were submitted individually to a reaction with CaO, Ca2SiO4, Ca3SiO5, Ca3Al2O6 and Ca4Al2Fe2O10 in an electric furnace at 1450??C for 2.5 hours. The powder X-ray diffraction analysis revealed the formation of calcium titanate during the reaction of magnesium orthotitanate with most of the Portland cement phases. By other hand, calcium titanate was not affected when in contact with Portland cement phases. These results opened a great possibility in exploring both phases in a new chromefree refractory. In a second step of this research, a magnesia-magnesium orthotitanate-calcium titanate refractory brick was produced and compared with a standard magnesia-spinel refractory brick. Both formulations were evaluated in thermal spalling resistance test, apparent porosity, bulk density, true specific gravity, water absorption, total porosity, chemical analysis, elastic modulus, thermal expansion coefficient and coating adherence test associated with scanning electronic microscopy. Refractories of magnesia-magnesium orthotitanate-calcium titanate system presented excellent coat adherence result maintaining the same level of thermal spalling resistance when compared with a standard magnesiaspinel refractory. |
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2017-05-23T18:09:13Z2017-05-23T18:09:13ZSeptember 18-21, 2007http://repositorio.ipen.br/handle/123456789/27493In this work magnesium orthotitanate (Mg2TiO4) and calcium titanate (CaTiO3) were submitted individually to a reaction with CaO, Ca2SiO4, Ca3SiO5, Ca3Al2O6 and Ca4Al2Fe2O10 in an electric furnace at 1450??C for 2.5 hours. The powder X-ray diffraction analysis revealed the formation of calcium titanate during the reaction of magnesium orthotitanate with most of the Portland cement phases. By other hand, calcium titanate was not affected when in contact with Portland cement phases. These results opened a great possibility in exploring both phases in a new chromefree refractory. In a second step of this research, a magnesia-magnesium orthotitanate-calcium titanate refractory brick was produced and compared with a standard magnesia-spinel refractory brick. Both formulations were evaluated in thermal spalling resistance test, apparent porosity, bulk density, true specific gravity, water absorption, total porosity, chemical analysis, elastic modulus, thermal expansion coefficient and coating adherence test associated with scanning electronic microscopy. Refractories of magnesia-magnesium orthotitanate-calcium titanate system presented excellent coat adherence result maintaining the same level of thermal spalling resistance when compared with a standard magnesiaspinel refractory.Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-05-23T18:09:13Z No. of bitstreams: 1 22864.pdf: 180135 bytes, checksum: 6b57b6fa1ceadd5fe2feb8c96b41d443 (MD5)Made available in DSpace on 2017-05-23T18:09:13Z (GMT). No. of bitstreams: 1 22864.pdf: 180135 bytes, checksum: 6b57b6fa1ceadd5fe2feb8c96b41d443 (MD5)581-584Westerville, Ohio: American Ceramic Society, 2006Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractoryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectUNITECRIDresden, GermanyFERREIRA, LEONARDO C.RODRIGUES, JOSE de A.BERNARDI, LAURO T.BALDO, JOAO B.BRESSIANI, JOSE C.PROCEEDINGS OF UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES; BIENNIAL WORLDWIDE CONGRESS, 10thinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN228642007BRESSIANI, JOSE C.17-05Proceedings3113608974661459FERREIRA, LEONARDO C.:3113:-1:SRODRIGUES, JOSE DE A.:6089:-1:NBALDO, JOAO B.:7466:-1:NBRESSIANI, JOSE C.:1459:720:NORIGINAL22864.pdf22864.pdfapplication/pdf180135http://repositorio.ipen.br/bitstream/123456789/27493/1/22864.pdf6b57b6fa1ceadd5fe2feb8c96b41d443MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/27493/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/274932017-05-23 18:09:13.204oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102017-05-23T18:09:13Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false |
dc.title.pt_BR.fl_str_mv |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
title |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
spellingShingle |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory FERREIRA, LEONARDO C. |
title_short |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
title_full |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
title_fullStr |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
title_full_unstemmed |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
title_sort |
Reaction behavior of magnesium orthotitanate and calcium titanate with compounds of portland cement and their use in a chrome-free refractory |
author |
FERREIRA, LEONARDO C. |
author_facet |
FERREIRA, LEONARDO C. RODRIGUES, JOSE de A. BERNARDI, LAURO T. BALDO, JOAO B. BRESSIANI, JOSE C. PROCEEDINGS OF UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES; BIENNIAL WORLDWIDE CONGRESS, 10th |
author_role |
author |
author2 |
RODRIGUES, JOSE de A. BERNARDI, LAURO T. BALDO, JOAO B. BRESSIANI, JOSE C. PROCEEDINGS OF UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES; BIENNIAL WORLDWIDE CONGRESS, 10th |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
FERREIRA, LEONARDO C. RODRIGUES, JOSE de A. BERNARDI, LAURO T. BALDO, JOAO B. BRESSIANI, JOSE C. PROCEEDINGS OF UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES; BIENNIAL WORLDWIDE CONGRESS, 10th |
description |
In this work magnesium orthotitanate (Mg2TiO4) and calcium titanate (CaTiO3) were submitted individually to a reaction with CaO, Ca2SiO4, Ca3SiO5, Ca3Al2O6 and Ca4Al2Fe2O10 in an electric furnace at 1450??C for 2.5 hours. The powder X-ray diffraction analysis revealed the formation of calcium titanate during the reaction of magnesium orthotitanate with most of the Portland cement phases. By other hand, calcium titanate was not affected when in contact with Portland cement phases. These results opened a great possibility in exploring both phases in a new chromefree refractory. In a second step of this research, a magnesia-magnesium orthotitanate-calcium titanate refractory brick was produced and compared with a standard magnesia-spinel refractory brick. Both formulations were evaluated in thermal spalling resistance test, apparent porosity, bulk density, true specific gravity, water absorption, total porosity, chemical analysis, elastic modulus, thermal expansion coefficient and coating adherence test associated with scanning electronic microscopy. Refractories of magnesia-magnesium orthotitanate-calcium titanate system presented excellent coat adherence result maintaining the same level of thermal spalling resistance when compared with a standard magnesiaspinel refractory. |
publishDate |
2017 |
dc.date.evento.pt_BR.fl_str_mv |
September 18-21, 2007 |
dc.date.accessioned.fl_str_mv |
2017-05-23T18:09:13Z |
dc.date.available.fl_str_mv |
2017-05-23T18:09:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ipen.br/handle/123456789/27493 |
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http://repositorio.ipen.br/handle/123456789/27493 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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581-584 |
dc.coverage.pt_BR.fl_str_mv |
I |
dc.publisher.none.fl_str_mv |
Westerville, Ohio: American Ceramic Society, 2006 |
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Westerville, Ohio: American Ceramic Society, 2006 |
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