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Mechanochemical synthesis of tetrahedrite materials using mixtures of synthetic and ore samples collected in the Portuguese zone of the Iberian Pyrite Belt

2021-04Journal article Open access
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dc.contributor.authorNeves, Filipe
dc.contributor.authorEsperto, Luís
dc.contributor.authorFigueira, Isabel
dc.contributor.authorMascarenhas, João
dc.contributor.authorSalgueiro, Rute
dc.contributor.authorSilva, Teresa
dc.contributor.authorCorreia, J.B.
dc.contributor.authorCarvalho, Patricia Almeida
dc.contributor.authorde Oliveira, Daniel Pipa Soares
dc.date.accessioned2022-01-05T11:56:39Z
dc.date.available2023-04-01T00:30:16Z
dc.date.issued2021-04
dc.description.abstractABSTRACT: Considering that the synthesis of tetrahedrite-based materials usually uses high purity elements, the evaluation of the direct application of ore samples as raw materials for their synthesis is a pertinent issue. In the present study, multiphase synthetic tetrahedrite samples were mixed with tetrahedrite-tennantite ore samples (in weight ratios of 0.8/0.2, 0.5/0.5 and 0.2/0.8) to produce tetrahedrite-based materials by solid-state mechanochemical syn-thesis. The ore samples were obtained from the abandoned Barrig ̃ao mine dumps and from the Neves Corvo mine, both located in the Portuguese zone of the Iberian Pyrite Belt, whose main constituents were found to be As-rich tetrahedrite and tennantite-(Fe), respectively. Depending on the ore sample and on the mixture ratios, the displacement reactions occurring during the synthesis process gave rise to different phase transformation paths. For the ratios of 0.5/0.5 and 0.2/0.8, the mixtures with the Barrig ̃ao ore were found to consist of a single sulfide phase, tetrahedrite-tennantite-(Fe), plus quartz, while famatinite was also observed in the 0.8/0.2 mixture. Tetrahedrite-tennantite-(Fe) phase was the main constituent of all mixtures with the Neves Corvo ore, but in all of them other sulfide phases, famatinite-luzonite and pyrite, were also present in addition to quartz. Despite being dissimilar, these results are very promising and encouraging, by confirming the possible direct usage of ore samples and of dump material for the synthesis of tetrahedrite-based materials with all the potential environmental-economic gains that can be obtained.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNeves et al. 2021, ‘Mechanochemical synthesis of tetrahedrite materials using mixtures of synthetic and ore samples collected in the Portuguese zone of the Iberian Pyrite Belt’, Minerals Engineering, vol. 164. doi:10.1016/j.mineng.2021.106833pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.mineng.2021.106833pt_PT
dc.identifier.issn0892-6875
dc.identifier.urihttp://hdl.handle.net/10400.9/3666
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFCT – Fundação para a Ciência e a Tecnologia, I.P., under the project PTDC/EAM-PEC/ 29905/2017 (Project LocalEnergy – “Local Resources for Multifunc-tional Tetrahedrite-based Energy-Harvesting Applications”pt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0892687521000625?via%3Dihub#!pt_PT
dc.subjectTetrahedrite-tennantitept_PT
dc.subjectMineral processingpt_PT
dc.subjectMechanochemical synthesispt_PT
dc.subjectIberian Pyrite Belt (IPB)pt_PT
dc.titleMechanochemical synthesis of tetrahedrite materials using mixtures of synthetic and ore samples collected in the Portuguese zone of the Iberian Pyrite Beltpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceFalmouth, UKpt_PT
oaire.citation.titleMinerals Engineeringpt_PT
oaire.citation.volume164pt_PT
person.familyNameNeves
person.familyNameMascarenhas
person.familyNameSalgueiro
person.familyNameSilva
person.familyNameCorreia
person.familyNamecarvalho
person.familyNamede Oliveira
person.givenNameFilipe
person.givenNameJoão
person.givenNameRute
person.givenNameTeresa
person.givenNameJose B.
person.givenNamepatricia
person.givenNameDaniel Pipa Soares
person.identifier2216267
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person.identifier.orcid0000-0002-0306-1015
person.identifier.orcid0000-0002-8314-0695
person.identifier.orcid0000-0002-5447-0409
person.identifier.orcid0000-0002-6338-8845
person.identifier.ridA-7836-2012
person.identifier.ridL-3318-2014
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person.identifier.ridC-1150-2009
person.identifier.scopus-author-id7004435348
person.identifier.scopus-author-id7202364148
person.identifier.scopus-author-id7102859165
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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