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http://dx.doi.org/10.4191/KCERS.2003.40.9.897

Sulfating Reaction of Coal Fly Ash and Microwave Extraction of Aluminum Ions  

박영증 (부산대학교 재료공학부)
박영민 (부산대학교 재료공학부)
양태영 (부산대학교 재료공학부)
윤석영 (부산대학교 재료공학부)
박홍채 (부산대학교 재료공학부)
Publication Information
Journal of the Korean Ceramic Society / v.40, no.9, 2003 , pp. 897-901 More about this Journal
Abstract
The sulfating reaction of coal fly ash with ammonium sulfate and the microwave extraction of aluminum ions from the resultant materials using sulfuric acid have been investigated. The (NH$_4$)$_3$Al(SO$_4$)$_3$ formed by the reaction of coal fly ash and ammonium sulfate decomposed to NH$_4$Al(SO$_4$)$_2$ at $\geq$ 350$^{\circ}C$. The maximum efficiency of aluminum ions extracted from the sulfating reaction product (400$^{\circ}C$, 120 min) by microwave heating (90$^{\circ}C$, 240 min) using 1 M H$_2$SO$_4$ was 84％ (based on Al content in coal fly ash) but 77％ by conventional heating at same condition.
Keywords
Coal fly ash; Sulfating reaction; Ammonium sulfate; Sulfuric acid; Microwave extraction; Aluminum ions;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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