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Effect of particle size distribution and calcium aluminate cement on the rheological behaviour of all-alumina refractory castables

2012Journal article Open access
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dc.contributor.authorSilva, Abílio P.
dc.contributor.authorSegadães, A M
dc.contributor.authorPinto, Deesy G.
dc.contributor.authorOliveira, Luiz A.
dc.contributor.authorDevezas, Tessaleno
dc.date.accessioned2022-12-05T12:18:14Z
dc.date.available2022-12-05T12:18:14Z
dc.date.issued2012
dc.description.abstractPrevious works based on statistical design of experiments (DoE) defined a model all-alumina self-flow refractory castable (SFRC) with optimized particle size distribution for simultaneous high flowability index (FI) and superior post-sintering performance. This work compares the SFRC rheological behaviour and setting time with those of alternative all-alumina castables with different Andreasen aggregate particle size distribution modulus, and of the equivalent castables containing calcium aluminate cement. The model castable showed Bingham behaviour with low yield stress, viscosity and thixotropy, guaranteeing easier casting and less wear in the casting and/or projection equipment. However, as the coarse particle fraction increases, the castable flow tends to be non-linear and changes from Bingham to Herschel–Bulkley. The cement containing castables quickly loose flowability despite the applied shear. This work confirmed previous conclusions based on FI measurements and demonstrates the adequacy of the use of FI values in the calculation of FI response surface by DoE.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.powtec.2012.04.028pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/12449
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectParticle size distributionpt_PT
dc.subjectRheologypt_PT
dc.subjectCalcium aluminate cementpt_PT
dc.subjectRefractory castablespt_PT
dc.subjectDesign of experimentspt_PT
dc.titleEffect of particle size distribution and calcium aluminate cement on the rheological behaviour of all-alumina refractory castablespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FCTM%2F66302%2F2006/PT
oaire.citation.endPage113pt_PT
oaire.citation.startPage107pt_PT
oaire.citation.titlePowder Technologypt_PT
oaire.citation.volume226pt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameSilva
person.familyNameSegadães
person.familyNamePinto
person.familyNamePereira de Oliveira
person.familyNameDevezas
person.givenNameAbilio
person.givenNameAna Maria
person.givenNameDeesy
person.givenNameLuiz Antonio
person.givenNameTessaleno
person.identifier.ciencia-idD314-9C94-0B0F
person.identifier.ciencia-idF21F-31FB-D0F3
person.identifier.ciencia-idF014-D3E5-5C2E
person.identifier.ciencia-id2F16-EE48-E318
person.identifier.orcid0000-0002-2100-7223
person.identifier.orcid0000-0001-6465-620X
person.identifier.orcid0000-0003-2218-1343
person.identifier.orcid0000-0002-1353-2001
person.identifier.orcid0000-0002-7993-4919
person.identifier.ridO-1474-2013
person.identifier.ridE-4499-2013
person.identifier.ridL-3270-2013
person.identifier.ridF-7479-2016
person.identifier.scopus-author-id8540933900
person.identifier.scopus-author-id56429804700
person.identifier.scopus-author-id35362905700
person.identifier.scopus-author-id8414567700
person.identifier.scopus-author-id6602800227
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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