Improved flotation of heat treated lignite with saline solutions containing mono and multivalent ions

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dc.authoridcelik, mehmet/0000-0002-0157-7018
dc.contributor.authorOzdemir, Orhan
dc.contributor.authorErsoy, Omer F.
dc.contributor.authorGuven, Onur
dc.contributor.authorTurgut, Hatice
dc.contributor.authorCinar, Mustafa
dc.contributor.authorCelik, Mehmet S.
dc.date.accessioned2025-01-27T20:17:02Z
dc.date.available2025-01-27T20:17:02Z
dc.date.issued2018
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractFlotation of lignites is inherently difficult. However, pre-heat treatment of coal is also known to make coal surfaces more hydrophobic possibly through removal of water entrapped in the structure of coal. In this context, the objective of this study was, therefore, to determine changes in the hydrophobicity of some lignites under moderately controlled heat treatment, and correlate the flotation response of lignites in different salt solutions of NaCl, KCl, CaCl2, and MgCl2 without using any reagent. The results of flotation tests suggested that, under the present test conditions, it was possible to float thermally pre-treated lignite samples of partially hydrophobic character in salt solutions in the absence of collector and frother. In addition, the effect of heat treatment on hydrophobicity, and in turn flotation was explained by a theoretical model based on extended DLVO interactions to quantify the effects of both heat treatment and salt concentration on bubble-particle interactions. The results of theoretical modeling suggested that the removal of hydrogen containing groups from coal surfaces significantly contributed to the electrical double layer and hydrophobic forces that governed the magnitude of energetic barrier and also the extent of bubble-particle attachment.
dc.description.sponsorshipScientific Research Projects Coordination Unit of Istanbul University [35028]
dc.description.sponsorshipThis work was supported by Scientific Research Projects Coordination Unit of Istanbul University (Project number 35028).
dc.identifier.doi10.5277/ppmp18118
dc.identifier.endpage1082
dc.identifier.issn1643-1049
dc.identifier.issn2084-4735
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85057096333
dc.identifier.scopusqualityQ2
dc.identifier.startpage1070
dc.identifier.urihttps://doi.org/10.5277/ppmp18118
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21470
dc.identifier.volume54
dc.identifier.wosWOS:000450237100005
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOficyna Wydawnicza Politechniki Wroclawskiej
dc.relation.ispartofPhysicochemical Problems of Mineral Processing
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectheat-treatment
dc.subjectlignite
dc.subjectsaline solutions
dc.subjectflotation
dc.subjectDLVO
dc.titleImproved flotation of heat treated lignite with saline solutions containing mono and multivalent ions
dc.typeArticle

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