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Review on Evaluation of Rare Earth Metals and Rare Valuable Metals Contained in Coal Ash of Coal-fired Power Plants in Korea
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 Title & Authors
Review on Evaluation of Rare Earth Metals and Rare Valuable Metals Contained in Coal Ash of Coal-fired Power Plants in Korea
Park, Seok-Un; Kim, Jae-Kwan; Seo, Yeon-Seok; Hong, Jun-Seok; Lee, Hyoung-Beom; Lee, Hyun-Dong;
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 Abstract
Distribution of rare earth metals (REMs) and rare valuable metals (RVMs) contents in coal ashes (fly ash, bottom ash, and pond ash) and leachate from 11 coal-fired power plants in Korea were investigated. Coal ashes and leachates were found to contain important REMs and RVMs such as Yttrium (Y) and Neodymium (Nd), which was in the range of 23~75 mg/kg. However, it still requires developing effective recovery and separation methods in order to utilize REMs and RVMs in ash and leachate. Recovery of valuable elements (Y and Nd) from various and extensive ash sources (8.21 million tons/year in 2013) can provide the existing power plants with additional profit; therefore, it can significantly improve economics of the power plants.
 Keywords
Rare Earth Metals;Rare Valuable Metals;Coal Ash;Coal-fired Power Plant;Urban mine;
 Language
English
 Cited by
 References
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