Comparative study of the effect of particle size on flotation kinetics of raw and waste coal

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dc.citation.issue7
dc.citation.rankM21
dc.citation.spage749
dc.citation.volume15
dc.contributor.authorSokolović, Jovica
dc.contributor.authorDjolović, Ivana
dc.contributor.authorTanikić, Dejan
dc.contributor.authorŠtirbanović, Zoran
dc.contributor.authorIlic, Ivana
dc.date.accessioned2025-12-13T10:01:41Z
dc.date.available2025-12-13T10:01:41Z
dc.date.issued2025
dc.description.abstractThis study examines the influence of particle size on the flotation kinetics parameters of both raw and waste fine coal originating from the anthracite mine “Vrška Čuka”, Serbia. Flotation kinetics modeling was performed using MATLAB for nonlinear regression analysis, based on coal flotation test data. The correlation between total combustible recovery and flotation time was determined using the following models: Classical, Klimpel, Kelsall, Modified Kelsall, and Fully Mixed. The coefficients of determination range from 0.9724 (the Klimpel model) to 1 (the modified Kelsall model) for raw coal and from 0.8609 (the Klimpel model) to 0.9981 (the modified Kelsall model) for waste coal. Although both the Classical and Modified Kelsall models demonstrated a good correlation with the experimental data, the Modified Kelsall model provided a slightly better fit. The maximum values of the flotation rate constant (k) for both coals were obtained for the particle size-class (−0.1 + 0.053) mm for the Classical model and (−0.2 + 0.1) mm for the modified Kelsall model. The relation between flotation kinetics constant (k) and average particle size value (dsr) was estimated for the Classical model and the modified Kelsall model. It was observed that the flotation kinetics constant (k) for coal particle size could be predicted satisfactorily.
dc.identifier.doi10.3390/min15070749
dc.identifier.issn2075-163X
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/6058
dc.language.isoen
dc.publisherMDPI
dc.rights.licenseARR
dc.rights.uriAll rights reserved
dc.sourceMinerals
dc.subjectcoal
dc.subjectparticle size
dc.subjectflotation kinetics
dc.subjectclassical model
dc.subjectmodified Kelsall model
dc.titleComparative study of the effect of particle size on flotation kinetics of raw and waste coal
dc.typearticle
dc.type.versionpublishedVersion

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