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Notes on the Potential for the Concentration of Rare Earth Elements and Yttrium in Coal Combustion Fly Ash

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dc.contributor.authorHower, Jamesen
dc.contributor.authorGroppo, Johnen
dc.contributor.authorHenke, Kevinen
dc.contributor.authorHood, Madisonen
dc.contributor.authorEble, Cortlanden
dc.contributor.authorHonaker, Ricken
dc.contributor.authorZhang, Wencaien
dc.contributor.authorQian, Dalien
dc.date.accessioned2022-02-07T19:30:30Zen
dc.date.available2022-02-07T19:30:30Zen
dc.date.issued2015-06-23en
dc.date.updated2022-02-07T19:30:28Zen
dc.description.abstractCertain Central Appalachian coals, most notably the Fire Clay coal with a REY-enriched volcanic ash fall tonstein, are known to be enriched in rare earth elements. The Fire Clay tonstein has a greater contribution to the total coal + parting REY than would be inferred from its thickness, accounting for about 20%–35% of the REY in the coal + parting sequence. Underground mining, in particular, might include roof and floor rock and the within-seam partings in the mined product. Beneficiation, necessary to meet utility specifications, will remove some of the REY from the delivered product. In at least one previously published example, even though the tonstein was not present in the Fire Clay coal, the coal was enriched in REY. In this case, as well as mines that ship run-of-mine products to the utility, the shipped REY content should be virtually the same as for the mined coal. At the power plant, however, the delivered coal will be pulverized, generally accompanied by the elimination of some of the harder rock, before it is fired into the boiler. Overall, there are a wide range of variables between the geologic sample at the mine and the power plant, any or all of which could impact the concentration of REY or other critical materials in the coal combustion products.en
dc.description.versionPublished versionen
dc.format.extentPages 356-366en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.3390/min5020356en
dc.identifier.eissn2075-163Xen
dc.identifier.issn2075-163Xen
dc.identifier.issue2en
dc.identifier.orcidZhang, Wencai [0000-0001-8568-5309]en
dc.identifier.urihttp://hdl.handle.net/10919/108220en
dc.identifier.volume5en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subject0403 Geologyen
dc.subject0502 Environmental Science and Managementen
dc.subject0914 Resources Engineering and Extractive Metallurgyen
dc.titleNotes on the Potential for the Concentration of Rare Earth Elements and Yttrium in Coal Combustion Fly Ashen
dc.title.serialMineralsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Engineeringen
pubs.organisational-group/Virginia Tech/Engineering/Mining and Minerals Engineeringen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Facultyen

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