Lightweight Aggregate Made of Desulfurized Fly Ash and Bottom Ash after Magnetic Separation

Abstract:

This research provides a comparison of ALAs which was made up of two different raw materials, that is, MDFA and MDBA which were produced from fluidized bed type boiler of power plant and then magnetically separated. ALAs made up of MDFA had too much liquid phase at high temperature; on the other hand, those made up of MDBA showed a black core region as well as good distribution of various sizes of pores inside ALA. Although a good quality of ALA can be made of MDBA only, the optimum composition was obtained under the conditions of MDBA:DS=5:5 and at 1200°C. Nonetheless for its high sintering temperature, MDBA is a prospective recycling material for making lightweight aggregate.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 1450-1454
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.1450
• Online since: May 2012
• Authors: Yoo Taek Kim, Seung Gu Kang, Chang Sam Kim
• Keywords: Artificial Lightweight Aggregate, Bloating, Desulfurized Fly Ash, Magnetic Separation

References

[1] P. Chindaprasirt, S. Homwuttiwong, V. Sirivivatnanon: J. Cement & Concrete Research Vol. 34 (2004), p.1087

[2] P.S. Nicholson and W.A. Ross: J. Amer. Ceram. Soc. Vol. 53 (1970), p.154

[3] S. Aydin, C. Karatay, B. Baradan: J. Powder Technology Vol. 197 (2010), p.68

[4] F. Sgard, F. Castel and N. Atalla: Applied Acoustics Vol. 72 (2011), p.157

[5] F.C. Sgard, X. Olny, N. Atalla, F. Castel: Applied Acoustics Vol. 66 (2005), p.625

DOI: 10.1016/j.apacoust.2004.09.008

[6] S.C. Huang, F.C. Chang, S.L. Lo, M. Y. Lee, C.F. Wang and J.D. Lin: J. Hazardous Materials Vol. 144 [1-2] (2007), p.52

[7] C.M. Riely: J. Amer. Ceram. Soc. Vol. 34 [4] (1951), p.121

[8] R. de'Gennaro, P. Cappelletti, G. Cerri, M. de'Gennaro, M. Dondi and A. Langella: Appl. Clay Sci. Vol. 25 (2004), p.71

DOI: 10.1016/j.clay.2006.11.004