Determinación de la cinética de molienda SAG considerando la influencia reológica de finos en pulpa

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dc.contributor.advisorBustamante Rúa, Moisés Oswaldo
dc.contributor.authorValencia Guaricela, Fernando Tulio
dc.contributor.orcidValencia Guaricela, Fernando Tulio [0000000202078341]spa
dc.contributor.researchgroupCiencia y Tecnología de Materialesspa
dc.date.accessioned2025-03-20T19:09:56Z
dc.date.available2025-03-20T19:09:56Z
dc.date.issued2025-03-20
dc.descriptionIlustracionesspa
dc.description.abstractDeterminación de la cinética de molienda SAG considerando la influencia reológica de finos en pulpa En este estudio se presentan los resultados experimentales obtenidos a escala de laboratorio, donde bajo condiciones de molienda semiautógena SAG controlada, se procedió a la molienda de un monotamaño de mena silícea de 1.25 cm a la que se le añadió una pulpa preparada del mismo material con diferentes concentraciones de fino por debajo de malla 200, considerada ésta una fase contaminante. La investigación determinó la influencia en la cinética de fractura de las partículas gruesas bajo la premisa de que la presencia de finos en una pulpa modifica el comportamiento reológico de un fluido inicialmente de tipo newtoniano como el agua a otro no newtoniano como han mostrado las pulpas minerales. Los resultados obtenidos muestran una relación inversamente proporcional entre la presencia de finos y las velocidades específicas de fractura de las partículas gruesas. Esto permitió desarrollar modelos de función de fractura considerando diferentes escenarios de viscosidad aparente en la pulpa contaminante. (Texto tomado de la fuente)spa
dc.description.abstractDetermination of Sag Grinding Kinetics Considering the Rheological Influence of Fines in Slurry The experimental results obtained in the laboratory are presented, where, under conditions of controlled SAG semi-autogenous grinding, a monosize of siliceous ore of 2.54 cm was milled to which a pulp prepared of the same material was added with different concentrations of fine below mesh 200. The objective of the investigation aims to determine the influence on the fracture kinetics of the coarse particles under the premise that the presence of fines in a pulp modifies the rheological behavior of an initially type fluid Newtonian as water to another not Newtonian as mineral pulps have shown. The results obtained show an inversely proportional relationship between the presence of fines and the specific breakeage rate of the coarse particles.eng
dc.description.curricularareaÁrea Curricular de Materiales y Nanotecnologíaspa
dc.description.degreelevelDoctoradospa
dc.description.degreenameDoctor en Ingenieríaspa
dc.format.extent109 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/87707
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Medellínspa
dc.publisher.facultyFacultad de Minasspa
dc.publisher.placeMedellín, Colombiaspa
dc.publisher.programMedellín - Minas - Doctorado en Ingeniería - Ciencia y Tecnología de Materialesspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseReconocimiento 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/spa
dc.subject.armarcTrituradoras
dc.subject.armarcFractura de solidos
dc.subject.ddc670 - Manufactura::671 - Proceso de metalurgia y productos metálicos primariosspa
dc.subject.lembReología
dc.subject.proposalMolienda SAGspa
dc.subject.proposalReologíaspa
dc.subject.proposalPulpaspa
dc.subject.proposalVelocidad específica de fracturaspa
dc.subject.proposalSAG grindingeng
dc.subject.proposalRheologyeng
dc.titleDeterminación de la cinética de molienda SAG considerando la influencia reológica de finos en pulpaspa
dc.title.translatedDetermination of sag grinding kinetics considering the rheological influence of fines in slurry
dc.typeTrabajo de grado - Doctoradospa
dc.type.coarhttp://purl.org/coar/resource_type/c_db06spa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/doctoralThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TDspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
dcterms.audience.professionaldevelopmentPúblico generalspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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