Effect of power ultrasound on wettability and collector-less floatability of chalcopyrite, pyrite and quartz

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dc.authorid0000-0002-7770-7480
dc.contributor.authorHassanzadeh, Ahmad
dc.contributor.authorGholami, Hamed
dc.contributor.authorÖzkan, Şafak Gökhan
dc.contributor.authorNiedoba, Tomasz
dc.contributor.authorSurowiak, Agnieszka
dc.date.accessioned2021-02-24T08:20:19Z
dc.date.available2021-02-24T08:20:19Z
dc.date.issued2021
dc.departmentTAÜ, Fen Bilimleri Enstitüsü, Robotlar ve Akıllı Sistemler Ana Bilim Dalı Koleksiyonuen_US
dc.description.abstractNumerous studies have addressed the role of ultrasonication on floatability of minerals macroscopically. However, the impact of acoustic waves on the mineral hydrophobicity and its physicochemical aspects were entirely overlooked in the literature. This paper mainly investigates the impact of ultrasonic power and its time on the wettability and floatability of chalcopyrite, pyrite and quartz. For this purpose, contact angle and collectorless microflotation tests were implemented on the ultrasonic-pretreated and non treated chalcopyrite, pyrite and quartz minerals. The ultrasonic process was carried out by a probe-type ultrasound (Sonopuls, 20 kHz and 60 W) at various ultrasonication time (0.5-30 min) and power (0-180 W) while the dissolved oxygen (DO), liquid temperature, conductivity (CD) and pH were continuously monitored. Comparative assessment of wettabilities in the presence of a constant low-powered (60 W) acoustic pre-treatment uncovered that surface of all three minerals became relatively hydrophilic. Meanwhile, increasing sonication intensity enhanced their hydrophilicities to some extent except for quartz at the highest power-level. This was mainly related to generation of hydroxyl radicals, iron-deficient chalcopyrite and elemental sulfur (for chalcopyrite), formation of OH and H radicals together with H2O2 (for pyrite) and creation of SiOH (silanol) groups and hydrogen bond with water dipoles (for quartz). Finally, it was also found that increasing sonication time led to enhancement of liquid temperature and conductivity but diminished pH and degree of dissolved oxygen, which indirectly influenced the mineral wettabilities and floatabilities. Although quartz and pyrite ultrasound-treated micro-flotation recoveries were lower than that of conventional ones, an optimum power-level of 60-90 W was identified for maximizing chalcopyrite recovery.
dc.identifier.doi10.3390/min11010048
dc.identifier.issn2075-163X
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85099102419
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://hdl.handle.net/20.500.12846/507
dc.identifier.volume11en_US
dc.identifier.wosWOS:000610597700001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÖzkan, Şafak Gökhan
dc.language.isoen
dc.publisherMDPI-Multidisciplinary Digital Publishing Institute
dc.relation.ispartofMinerals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectFroth Flotationen_US
dc.subjectPower Ultrasounden_US
dc.subjectUltrasonic Treatmenten_US
dc.subjectHydrophobicityen_US
dc.titleEffect of power ultrasound on wettability and collector-less floatability of chalcopyrite, pyrite and quartz
dc.typeArticle

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