Method for quick assessment of cohesive ore flowability

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Paulo César
Data de Publicação: 2022
Outros Autores: Luz, José Aurélio Medeiros da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/29005
Resumo: Beneficiation of iron ore with natural moisture has become increasingly relevant, either due to restrictions on wet operations, which result in disposal of tailings in dams, or due to the possibility of ready blending of various ore types. A great difficulty in these operations is handling of hydrated ores, with the presence of clay minerals, or with a higher moisture content. Effective techniques to facilitate handling emerge as the main challenge to make it possible to treat these ores under natural moisture in different plants around the world. This work aims at presenting a method for expeditious appraisal of the flowability of cohesive ore. A sample of iron ore from Mina do Pico, Brazil, was used in this study. The flowability was investigated under different conditions, using a bench scale rectangular trough with controlled slope. The following liners were studied: ASTM A-36 carbon (CDP), ultra-high molecular weight polyethylene (UHMW), Hardox, natural rubber, Arcoplate and polyurethane. UHMW resulted in the best flow efficiency and the lowest friction angle between bulk ore and the lined wall. Vibration as an ancillary agent for mechanical discharge significantly improved the flow efficiency.
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spelling Method for quick assessment of cohesive ore flowabilityMétodo de cuantificación expedita de la fluidez de mena cohesivaMétodo de quantificação expedita da escoabilidade de minério coesivoManuseio de granéisUmidade naturalMinério coesivoRevestimentoReologia.Bulk solid handlingNatural moistureCohesive oreCoatingRheology.Manejo de sólidos a granelHumedad naturalMineral cohesivoRevestimientoReología.Beneficiation of iron ore with natural moisture has become increasingly relevant, either due to restrictions on wet operations, which result in disposal of tailings in dams, or due to the possibility of ready blending of various ore types. A great difficulty in these operations is handling of hydrated ores, with the presence of clay minerals, or with a higher moisture content. Effective techniques to facilitate handling emerge as the main challenge to make it possible to treat these ores under natural moisture in different plants around the world. This work aims at presenting a method for expeditious appraisal of the flowability of cohesive ore. A sample of iron ore from Mina do Pico, Brazil, was used in this study. The flowability was investigated under different conditions, using a bench scale rectangular trough with controlled slope. The following liners were studied: ASTM A-36 carbon (CDP), ultra-high molecular weight polyethylene (UHMW), Hardox, natural rubber, Arcoplate and polyurethane. UHMW resulted in the best flow efficiency and the lowest friction angle between bulk ore and the lined wall. Vibration as an ancillary agent for mechanical discharge significantly improved the flow efficiency.El beneficio de menas de hierro con humedad natural se ha vuelto cada vez más relevante, ya sea debido a las restricciones en las operaciones húmedas, que resultan en la eliminación de relaves en presas, o debido a la posibilidad de mezcla lista para varios tipos de menas. Una gran dificultad en estas operaciones es el manejo de menas hidratadas, con presencia de minerales arcillosos, o con mayor contenido de humedad. Técnicas efectivas para facilitar el manipuleo emergen como el principal desafío para hacer posible el tratamiento de estas menas bajo humedad natural en diferentes plantas alrededor del mundo. Este trabajo tiene como objetivo presentar un método para la evaluación expedita de la fluidez de menas cohesivas. En este estudio se utilizó una muestra de mena de hierro de Mina do Pico, Brasil. La fluidez se investigó en diferentes condiciones, empleando un canalón (artesa) rectangular a escala de banco de pendiente controlada. Se estudiaron los siguientes revestimientos: carbono ASTM A-36 (CDP), polietileno de ultra alta masa molecular (UHMW), Hardox, caucho natural, Arcoplate y poliuretano. UHMW dio como resultado la mejor eficiencia de flujo y el ángulo de fricción más bajo entre el sólido a granel y la pared revestida. La vibración como agente auxiliar para la descarga mecánica mejoró significativamente la eficiencia del flujo.O beneficiamento do minério de ferro sob umidade natural tem se tornado cada vez mais relevante, seja pelas restrições às operações a úmido, que resultam na disposição de rejeitos em barragens, seja pela possibilidade de pronta mescla de diversos tipos de minério. Uma grande dificuldade nestas operações é o manuseio de minérios hidratados, com presença de minerais argilosos, ou com maior umidade. Técnicas eficazes para facilitar o manuseio surgem como o principal desafio para viabilizar o tratamento desses minérios sob umidade natural em diferentes usinas ao redor do mundo. Este trabalho tem como objetivo apresentar um método para avaliação expedita da escoabilidade de minério coesivo. Uma amostra de minério de ferro da Mina do Pico, Brasil, foi utilizada neste estudo. A escoabilidade foi investigada sob diferentes condições, empregando uma calha retangular, em escala de bancada, com declividade controlada. Foram estudados os seguintes revestimentos: carbono ASTM A-36 (CDP), polietileno de ultra-alta massa molecular (UHMW), Hardox, borracha natural, Arcoplate e poliuretano. O UHMW resultou melhor eficiência de escoamento e menor ângulo de atrito estático entre o minério a granel e a parede revestida. A vibração como agente auxiliar para descarga mecânica melhorou significativamente a eficiência do escoamento.Research, Society and Development2022-08-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/2900510.33448/rsd-v11i10.29005Research, Society and Development; Vol. 11 No. 10; e232111029005Research, Society and Development; Vol. 11 Núm. 10; e232111029005Research, Society and Development; v. 11 n. 10; e2321110290052525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/29005/27935Copyright (c) 2022 Paulo César Gonçalves; José Aurélio Medeiros da Luzhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessGonçalves, Paulo CésarLuz, José Aurélio Medeiros da2022-08-12T22:23:03Zoai:ojs.pkp.sfu.ca:article/29005Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:46:12.595849Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Method for quick assessment of cohesive ore flowability
Método de cuantificación expedita de la fluidez de mena cohesiva
Método de quantificação expedita da escoabilidade de minério coesivo
title Method for quick assessment of cohesive ore flowability
spellingShingle Method for quick assessment of cohesive ore flowability
Gonçalves, Paulo César
Manuseio de granéis
Umidade natural
Minério coesivo
Revestimento
Reologia.
Bulk solid handling
Natural moisture
Cohesive ore
Coating
Rheology.
Manejo de sólidos a granel
Humedad natural
Mineral cohesivo
Revestimiento
Reología.
title_short Method for quick assessment of cohesive ore flowability
title_full Method for quick assessment of cohesive ore flowability
title_fullStr Method for quick assessment of cohesive ore flowability
title_full_unstemmed Method for quick assessment of cohesive ore flowability
title_sort Method for quick assessment of cohesive ore flowability
author Gonçalves, Paulo César
author_facet Gonçalves, Paulo César
Luz, José Aurélio Medeiros da
author_role author
author2 Luz, José Aurélio Medeiros da
author2_role author
dc.contributor.author.fl_str_mv Gonçalves, Paulo César
Luz, José Aurélio Medeiros da
dc.subject.por.fl_str_mv Manuseio de granéis
Umidade natural
Minério coesivo
Revestimento
Reologia.
Bulk solid handling
Natural moisture
Cohesive ore
Coating
Rheology.
Manejo de sólidos a granel
Humedad natural
Mineral cohesivo
Revestimiento
Reología.
topic Manuseio de granéis
Umidade natural
Minério coesivo
Revestimento
Reologia.
Bulk solid handling
Natural moisture
Cohesive ore
Coating
Rheology.
Manejo de sólidos a granel
Humedad natural
Mineral cohesivo
Revestimiento
Reología.
description Beneficiation of iron ore with natural moisture has become increasingly relevant, either due to restrictions on wet operations, which result in disposal of tailings in dams, or due to the possibility of ready blending of various ore types. A great difficulty in these operations is handling of hydrated ores, with the presence of clay minerals, or with a higher moisture content. Effective techniques to facilitate handling emerge as the main challenge to make it possible to treat these ores under natural moisture in different plants around the world. This work aims at presenting a method for expeditious appraisal of the flowability of cohesive ore. A sample of iron ore from Mina do Pico, Brazil, was used in this study. The flowability was investigated under different conditions, using a bench scale rectangular trough with controlled slope. The following liners were studied: ASTM A-36 carbon (CDP), ultra-high molecular weight polyethylene (UHMW), Hardox, natural rubber, Arcoplate and polyurethane. UHMW resulted in the best flow efficiency and the lowest friction angle between bulk ore and the lined wall. Vibration as an ancillary agent for mechanical discharge significantly improved the flow efficiency.
publishDate 2022
dc.date.none.fl_str_mv 2022-08-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/29005
10.33448/rsd-v11i10.29005
url https://rsdjournal.org/index.php/rsd/article/view/29005
identifier_str_mv 10.33448/rsd-v11i10.29005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/29005/27935
dc.rights.driver.fl_str_mv Copyright (c) 2022 Paulo César Gonçalves; José Aurélio Medeiros da Luz
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Paulo César Gonçalves; José Aurélio Medeiros da Luz
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 11 No. 10; e232111029005
Research, Society and Development; Vol. 11 Núm. 10; e232111029005
Research, Society and Development; v. 11 n. 10; e232111029005
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
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