Experimental Investigation of Recycling Rare Earth Metals from Waste Fluorescent Lamp Phosphors View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2015

AUTHORS

Patrick M. Eduafo , Mark L. Strauss , Brajendra Mishra

ABSTRACT

Direct acid leaching of rare earth metals (REMs) from waste lamp phosphors is non-selective, leading to co-dissolution of impurities mainly calcium, phosphorus, silicon, iron and zinc. Calcining the phosphor powder at different temperatures followed by leaching with HCl isn’t efficient for the extraction of all the chief rare earths especially cerium (Ce), lanthanum (La) and terbium (Tb). Therefore, multi-stage leaching operations are required for the separation of the REMs in phosphor dust. This paper will outline a new process for extracting Ce, La, Tb, Eu and Y from waste fluorescent lamps using a three-stage leaching and separation process. A flowsheet has been developed which shows this process is selective and efficient. More... »

PAGES

253-259

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-319-48188-3_29

DOI

http://dx.doi.org/10.1007/978-3-319-48188-3_29

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1016155193


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