Improvement of low-quality fine coal by ultrasonic hydrophobic flocculation

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dc.contributor.authorUcbeyiay, H.
dc.date.accessioned2024-02-23T14:20:43Z
dc.date.available2024-02-23T14:20:43Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractIn this study, the effect of ultrasonic pretreatment on hydrophobic flocculation of fine coal was investigated and named as ultrasonic hydrophobic flocculation (USHF) technique. First, it was found that the ultrasonic power of 150 W and the ultrasonic pretreatment time of 180 sec was required to achieve for more combustible and good-quality coal. Then, the effects of ultrasound on the hydrophobic flocculation of coal with kerosene as bridging liquid were investigated and optimum kerosene concentration value was obtained 4 g/dm(3) under the experimental conditions. Also, it was found that a stirring speed of 750 rpm was sufficient to achieve the maximum combustible recovery and minimum ash content values of fine coal particles. The effects of sodium silicate, sodium hexametaphosphate, and sodium pyrophosphate used as inorganic dispersants on the ultrasonic hydrophobic flocculation of coal were also studied. Sodium silicate was more effective than other dispersants in the presence of kerosene. Thus, it was concluded that the ultrasonic pretreatment is an effective method for the beneficiation of fine particle coal. Coal with an ash content of 17.63% was enriched and clean coal was recovered with an ash content of 9.75% with the efficiency of 94.35% by ultrasonic hydrophobic flocculation technique.en_US
dc.identifier.doi10.1080/19392699.2022.2076087
dc.identifier.endpage768en_US
dc.identifier.issn1939-2699
dc.identifier.issn1939-2702
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85130497115en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage755en_US
dc.identifier.urihttps://doi.org/10.1080/19392699.2022.2076087
dc.identifier.urihttps://hdl.handle.net/20.500.12452/13268
dc.identifier.volume43en_US
dc.identifier.wosWOS:000795060400001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofInternational Journal Of Coal Preparation And Utilizationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectUltrasounden_US
dc.subjectCoalen_US
dc.subjectHydrophobic Flocculationen_US
dc.subjectBridging Liquidsen_US
dc.subjectInorganic Dispersantsen_US
dc.titleImprovement of low-quality fine coal by ultrasonic hydrophobic flocculationen_US
dc.typeArticleen_US

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