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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (5): 681-687    DOI: 10.1631/jzus.A072163
Energy & Environmental Engineering     
Utilization of fly ash from coal-fired power plants in China
Da-zuo CAO, Eva SELIC, Jan-Dirk HERBELL
Waste Management Engineering, Department of Mechanical Engineering, University of Duisburg-Essen, Duisburg 47057, Germany
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Abstract  The rapidly increasing demand for energy in China leads to the construction of new power plants all over the country. Coal, as the main fuel resource of those power plants, results in increasing problems with the disposal of solid residues from combustion and off gas cleaning. This investigation describes chances for the utilization of fly ash from coal-fired power plants in China. After briefly comparing the situation in China and Germany, the status of aluminum recycling from fly ash and the advantages for using fly ash in concrete products are introduced. Chemical and physical analyses of Chinese fly ash samples, e.g., X-ray diffraction (XRD), ICP (Inductive Coupled Plasma) and particle size analysis, water requirement, etc. are presented. Reasonable amounts of aluminum were detected in the samples under investigation, but for recovery only sophisticated procedures are available up to now. Therefore, simpler techniques are suggested for the first steps in the utilization of Chinese fly ash.

Key words： Fly ash utilization      Aluminum recycling      Concrete      Chemical and physical analyses     
Received: 20 July 2007      Published: 27 March 2008
CLC:  X7  
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Da-zuo CAO
Eva SELIC
Jan-Dirk HERBELL
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Da-zuo CAO, Eva SELIC, Jan-Dirk HERBELL. Utilization of fly ash from coal-fired power plants in China. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(5): 681-687.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A072163     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I5/681

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