Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/jspui/handle/123456789/5145
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dc.contributor.authorPereira, Mário J.-
dc.contributor.authorLima, Margarida Márcia Fernandes-
dc.contributor.authorLima, Rosa Malena Fernandes-
dc.date.accessioned2015-04-24T18:09:58Z-
dc.date.available2015-04-24T18:09:58Z-
dc.date.issued2014-
dc.identifier.citationPEREIRA, M. J.; LIMA, M. M. F.; LIMA, R. M. F. Calcination and characterisation studies of a Brazilian manganese ore tailing. International Journal of Mineral Processing, v. 131, p. 26-30, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0301751614001021>. Acesso em: 06 mar. 2015.pt_BR
dc.identifier.issn0301-7516-
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/5145-
dc.description.abstractThis paper discusses the systematic analysis of the results of calcination as a function of size fraction performed on a sample of Brazilian silicate–carbonate manganese ore tailing at 800 °C. The raw materials and the corresponding calcination products were analysed using several analytical techniques, including determination of density, specific surface area and porosity, chemical analysis and X-ray diffraction. Themorphology and chemical composition of the calcination products were analysed by using scanning electronic microscopy equipped with energy-dispersive X-ray spectrometer (SEM/EDS). Results indicate that the manganese ore tailing consists of silicates, namely, spessartine (Mn3Al2(SiO4)3), tephroite (Mn2(SiO4)) and rhodonite ((Mn,Fe,Mg,Ca)5(SiO3)5) and rhodochrosite (MnCO3). The loss of CO2 and OH during the thermal decomposition of the carbonate (rhodochrosite and dolomite) and hydrated minerals (kaolinite, muscovite and antigorite) in air atmosphere at 800 °C resulted in: (1) decrease of the specific surface area and porosity, (2) increase in the density and Mn grade from 27.6% to 32.2% and (3) increase in SiO2 grade from 26.7% to 30.1%. These results indicate that this material is within the chemical specifications of Fe–Si–Mn alloy.pt_BR
dc.language.isoen_USpt_BR
dc.subjectCalcinationpt_BR
dc.subjectCalcination Silicate manganese mineralspt_BR
dc.subjectCarbonate manganese mineralpt_BR
dc.subjectCharacterisationpt_BR
dc.titleCalcination and characterisation studies of a Brazilian manganese ore tailing.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.rights.licenseO periódico International Journal of Mineral Processing concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3585901125400.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.minpro.2014.08.003-
Appears in Collections:DEMIN - Artigos publicados em periódicos

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