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http://dx.doi.org/10.4191/kcers.2012.49.2.185

Hydration Characteristics of Coal-Fly Ash Containing High CaO Compound  

Sim, Jun-Soo (Department of Advanced Material Science and Engineering, Kyonggi University)
Lee, Ki-Gang (Department of Advanced Material Science and Engineering, Kyonggi University)
Kim, Yu-Taek (Department of Advanced Material Science and Engineering, Kyonggi University)
Kang, Seung-Ku (Department of Advanced Material Science and Engineering, Kyonggi University)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.2, 2012 , pp. 185-190 More about this Journal
Abstract
The purpose of this study was to examine a possibility that fly ash could be used as raw material for carbonation by conducting the experiment on magnetic separation and hydration of fly ash that contained a large amount of CaO composite. Wet magnetic separation experiment was performed to remove the component of magnetic substance that contained fly ash, which aimed at increasing the content of CaO in the non-magnetic domain. The selected fly ash was used for hydration experiment before the TG-DTA, XRF and XRD analyses were made to confirm the Ca component that could be carbonated. Then, the fly ash was turned to a hydrate that was favorable to dissociation of $Ca^{2+}$ ion. As a result, the magnetic separation enabled detecting the content of CaO component by up to 61 wt% in the non-magnetic domain. Since the hydrate was confirmed, it is believed that the fly ash can be used as raw material for carbonation.
Keywords
Coal-ash; Fly ash; Hydration experiment; Magnetic separation; CCS(Carbon Capture & Storage);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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