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dc.contributor.authorGupta, Nikhilen_US
dc.date.accessioned2015-12-03T07:00:13Z
dc.date.available2015-12-03T07:00:13Z
dc.date.issued2014-06-10en_US
dc.identifier.othervt_gsexam:2872en_US
dc.identifier.urihttp://hdl.handle.net/10919/64262
dc.description.abstractThe cleaning and dewatering of ultrafine (minus 44 micron) coal slurries is one of the biggest challenges faced by coal industry. Existing commercial technologies cannot produce sellable products from these ultrafine streams; therefore, the industry is forced to discard this potential energy resource to waste impoundments. This practice also has the potential to create an environmental hazard associated with blackwater pollution. To address these issues, researchers at Virginia Tech have worked over the past decade to develop a novel separation process that simultaneously removes both mineral matter and surface moisture from fine coal particles. The first stage of the process uses immiscible non-polar liquids, such as straight chain hydrocarbons, to selectively agglomerate fine coal particles in an aqueous medium. The agglomerates are then passed second stage of processing where mild agitation is used to disperse and fully engulf hydrophobic coal particles into the non-polar liquid and to simultaneously reject any residual water and associated hydrophillic minerals entrapped in the agglomerates. The non-polar liquid, which has a low heat of evaporation, is then recovered by evaporation/condensation and recycled back through the process. The research work described in this document focused on the engineering development of this innovative process using batch laboratory and continuous bench-scale systems. The resulting data was used to design a proof-of-concept (POC) pilot-scale plant that was constructed and successfully demonstrated using a variety of fine coal feedstocks.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectfine coalen_US
dc.subjectdewateringen_US
dc.subjectprocessingen_US
dc.subjectscale-upen_US
dc.titleDEVELOPMENT OF A NOVEL FINE COAL CLEANING AND DEWATERING TECHNOLOGYen_US
dc.typeDissertationen_US
dc.contributor.departmentMining and Minerals Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMining Engineeringen_US
dc.contributor.committeechairLuttrell, Gerald H.en_US
dc.contributor.committeechairYoon, Roe H.en_US
dc.contributor.committeememberSuboleski, Stanley C.en_US
dc.contributor.committeememberAdel, Gregory T.en_US


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