Magnetic separation studies of a lateritic nickel ore.

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dc.contributor.authorRamírez, Rafael Leonardo Silva
dc.contributor.authorSantos, Claudio Gouvea dos
dc.contributor.authorLima, Geraldo Magela de
dc.contributor.authorPereira, Matheus Henrique Simplício
dc.contributor.authorOliveira, Victor de Alvarenga
dc.date.accessioned2022-10-04T20:57:09Z
dc.date.available2022-10-04T20:57:09Z
dc.date.issued2021pt_BR
dc.description.abstractHydrogen reduction and thermal treatment experiments were carried out in the laboratory using a transition zone lateritic nickel ore. The products of the pyrometallurgical operations were subjected to magnetic separation. The ore and samples produced after the thermal processing (reduction and thermal treatment) were characterized by X-ray diffractometry (XRD), thermogravimetric analysis (TG), scanning electronic microscopy (SEM), and energy dispersive spectrometry (EDS). The qualitative identification of the main mineral transformations was performed and the influence of these thermal transformations in the magnetic properties of the sample was studied. When the reduction experiments were performed at 800 ° C, with a magnetic flux of 97.5 ± 10.6 mT, the nickel content increased by up to 33 % (recovery of ≈ 75 %) in the magnetic fraction. During the formation of magnetite in the reduction experiments, carried out at 400°C, the sample became very magnetic and, consequently, the unit operation of magnetic separation was not selective. It was possible to remove magnesium from all samples, regardless of the thermal treatment or reduction temperature used. The contents of this element were adjusted to the characteristic values of a limonitic ore.pt_BR
dc.identifier.citationRAMÍREZ, R. L. S. et al. Magnetic separation studies of a lateritic nickel ore. Southern Journal of Research, v. 1, 2021. Disponível em: <https://sjr.isp.edu.pk/index.php/journal/article/view/32>. Acesso em: 29 abr. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.20021/sjr.v1i2.32pt_BR
dc.identifier.issn2789-7591
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/15591
dc.identifier.uri2https://sjr.isp.edu.pk/index.php/journal/article/view/32pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectReduction by hydrogenpt_BR
dc.subjectThermal treatmentpt_BR
dc.titleMagnetic separation studies of a lateritic nickel ore.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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