Flotation performance analysis on coal washery rejects

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dc.contributor.authorKumar, P. S.
dc.contributor.authorSivrikaya, O.
dc.contributor.authorPradhan, S.
dc.contributor.authorNagannor, P. C.
dc.date.accessioned2025-01-06T17:37:00Z
dc.date.available2025-01-06T17:37:00Z
dc.date.issued2021
dc.description.abstractThe coal washery rejects cause major environmental problems in various parts of the globe. Nearly 1 Mt of coal rejects discarded as waste, is accumulated per annum in India, during washing or cleaning of raw coal. Cleaning coal, especially washery rejects, has posed a major challenge to the recovery of fine coal. Froth flotation is a better choice for processing coal washery rejects. In this study, flotation studies are attempted on the coal slurry received from Sudamdih coal washery, Jharkhand, India. A statistical design package (Minitab V17) was used to study the effect of process variables like collector and frother dosages on the responses. Regression equations for froth height, froth density, recovery and ash content of clean coal were developed. The coefficient of correlation (R2) values between the experimental and the predicted values of the flotation responses was found to be greater than 0.98 for all the models. Clean coal product was analyzed for recovery, froth height, and ash content by varying pulp densities. Results show that the coal slurry sample could be evaluated with acceptable recovery via flotation. Clean coal with an ash content of 17.2% is obtained with a 70% recovery from 35.5% ash. The cleaned coal can be used in powder coal-consuming industries. (c) 2021 Sinopec Petroleum Exploration and Production Research Institute. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.identifier.doi10.1016/j.engeos.2021.04.001
dc.identifier.endpage217
dc.identifier.issn2666-7592
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85131153342
dc.identifier.scopusqualityQ1
dc.identifier.startpage211
dc.identifier.urihttps://doi.org/10.1016/j.engeos.2021.04.001
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2076
dc.identifier.volume2
dc.identifier.wosWOS:001250919700001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherKeai Publishing Ltd
dc.relation.ispartofEnergy Geoscience
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectCoal
dc.subjectFlotation
dc.subjectCollector
dc.subjectFrother
dc.subjectAsh removal
dc.titleFlotation performance analysis on coal washery rejects
dc.typeArticle

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