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dc.contributor.authorHamid, Sarbast
dc.contributor.authorAlfonso Abella, María Pura
dc.contributor.authorAnticoi Sudzuki, Hernán Francisco
dc.contributor.authorGuasch Cascallo, Eduard
dc.contributor.authorOliva Moncunill, Josep
dc.contributor.authorDosbaba, Marek
dc.contributor.authorGarcía-Vallès, Maite
dc.contributor.authorChugunova, Marina
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.coverage.spatialeast=-7.024306700000011; north=42.172831; name=32558 Penouta, Ourense, Espanya
dc.identifier.citationHamid, S., Alfonso, P., Anticoi, H., Guasch, E., Oliva, J., Dosbaba, M., García-Vallès, M., Chugunova, M. Quantitative mineralogical comparison between HPGR and ball mill products of a Sn-Ta ore. "Minerals", 2018, vol. 8, núm. 4, p. 1-16.
dc.description.abstractThe mineralogy and liberation characteristics of the comminuted Penouta leucogranite host of the Sn-Ta ore were determined. Grinding developed by a combination of high-pressure grinding rolls (HPGR) followed by a ball mill (BM) was compared with a single ball mill process. The mineral characteristics of the grinding products were analyzed using a Tescan Integrated Mineralogical Analyzer (TIMA-X) and X-ray powder diffraction (XRD). The ore contains 103 ppm of Ta and is mainly composed of quartz, albite, microcline, muscovite, and kaolinite. Nb, Ta-rich minerals are columbite-(Mn) and tantalite-(Mn), as well as minor microlite and wodginite. The liberation in the product is high in the size fraction of less than 250 m (51–52 wt % for columbite-group minerals (CGM) and 74–80 wt % for cassiterite) and reduced in larger particles (8.8–17 wt % for CGM and 28–37 wt % for cassiterite). The recovery in the ¿250 m fraction was high, while in the larger fraction it is limited, remaining up to 80 ppm in some tailings. The combined use of HPGR and a BM reduces the particle size distribution of the product and, thus, increases the liberation of the ores. Smaller fractions can be treated directly using gravity methods; however, particles of a size greater than +250 m should be ground more.
dc.format.extent16 p.
dc.rightsAttribution 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Enginyeria de mines::Processament de minerals
dc.subject.lcshGrinding machines
dc.subject.lcshSize reduction of materials
dc.subject.otherProcess mineralogy
dc.subject.otherHigh-pressure grinding rolls
dc.subject.otherBall mill
dc.titleQuantitative mineralogical comparison between HPGR and ball mill products of a Sn-Ta ore
dc.subject.lemacTàntal (Química inorgànica)
dc.subject.lemacMàquines de mòlta
dc.contributor.groupUniversitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/642201/EU/Increasing yield on Tungsten and Tantalum ore production by means of advanced and flexible control on crushing, milling and separation process/OptimOre
local.citation.authorHamid, S.; Alfonso, P.; Anticoi, H.; Guasch, E.; Oliva, J.; Dosbaba, M.; García-Vallès, M.; Chugunova, M.

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Attribution 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain