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http://dx.doi.org/10.9727/jmsk.2012.25.2.117

A Study on Lithium Leaching from the Fly Ash of Taean Electric Power Plant  

Kim, Kang-Joo (Dept. of Environmental Engineering, Kunsan National University)
Lee, Eun-Gyu (Dept. of Environmental Engineering, Kunsan National University)
Lee, Jae-Cheol (Korea Western Power Co., Ltd., Gangnam Finance Center)
Hwang, Soo-Yeon (Korea Western Power Co., Ltd., Gangnam Finance Center)
Kim, Chang-Hyeon (Korea Western Power Co., Ltd., Gangnam Finance Center)
Publication Information
Journal of the Mineralogical Society of Korea / v.25, no.2, 2012 , pp. 117-122 More about this Journal
Abstract
The leaching of Li from fly ashes was studied. The fly ash produced from the Taean electric power plant of the Korea Western Power Co., Ltd. was used for this study. The Li leaching was observed according to the changes in solid:solution ratio, solution types (seawater or deionized water), and the $CO_2$ condition in the atmosphere. The results showed that the Li concentrations in the solution increased continuously as the solid:solution ratio increased. The Li leaching per unit mass of fly ash was greater when the deionized water was used for the experiment and when the $CO_2$ dissolution is limited during the reaction because the precipitation of $CaCO_3$ is suppressed under those conditions. At high solid:solution ratio, $Mg^{2+}$, the ion preventing the Li extraction from seawater by adsorption, was effectively removed from the seawater.
Keywords
Lithium; fly ash; Li extraction; $CaCO_3$; ash pond;
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Times Cited By KSCI : 1  (Citation Analysis)
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