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http://dx.doi.org/10.4191/KCERS.2002.39.8.735

Circularity Measurenment of Fly Ash Using Digital Image Processing  

Lee, Seung-Heun (Faculty of Materials and Chemical Engineering, Kunsan National University)
Kim, Hong-Joo (Basic Materials Crop., R and D Center)
Bae, Soon-Muk (Faculty of Materials and Chemical Engineering, Kunsan National University)
Lee, Won-Jun (Faculty of Materials and Chemical Engineering, Kunsan National University)
Sakai, Etsuo (Department of Metallurgy and Ceramics Science, Graduate School, Tokyo Institute of Technology)
Daimon, Masaki (Department of Metallurgy and Ceramics Science, Graduate School, Tokyo Institute of Technology)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.8, 2002 , pp. 735-741 More about this Journal
Abstract
This paper investigates circularity of fly ashes using the digital image processing. Fly ashes directly collect from electrostatic precipitator when the load of conditions of boiler are changed at a coal-fired power plant. Circularity measurement can be accomplished in five steps: ① image acquisition, ② grey image processing, ③ detection the component to measure ④ binary image processing ⑤ feature measurement. The mean circularity of fly ashes is in the range of 0.78 to 0.83. fly ashes collected from the same hopper has similar circularity regardless of the load of boiler and circularity increases as going from the 1st hopper to 3rd one, namely as particle size become finer.
Keywords
Fly ash; Image processing; Circularity; Electrostatic precipitator;
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1 K. Y. Kang, J. G. Roemer and D. Ghosh, 'Microstructural Characterization of Cemented Sample by Image Analysis Techniques,' Powder Tech., 108 130-36 (2000)   DOI   ScienceOn
2 C. F. Mora, A. K. H. Kwan and H. C. Chan. 'Particle Size Distribution Analysis of Coarse Aggregate Using Digital Image Processing,' Cem. Concr. Res., 28 [6] 921-32 (1998)   DOI   ScienceOn
3 A-L. Persson, 'Image Analysis of Shape and Size of Fine Aggregates,' Eng. Geology, 50 177-86 (1988)
4 F. Podczeck, S. R. Rahman and J. M. Newton, 'Evaluation of a Standardized Procedure to Assess the Shape of Pellets Using Analysis,' Int. J. of Pharm., 192 123-38 (1999)   DOI   ScienceOn
5 J. M. R Fernlund, 'The Effect of Particle Form on Sieve Analysis : A Test by Image Analysis,' Eng. Geology, 50 111-24 (1998)   DOI   ScienceOn
6 R. E. Ferrell and A. W. Drew, 'Quantification of Fly Ash in Concrete by Image Analysis Techniques : A Preliminary Investigation,' Mat. Res. Soc. Symp. Proc., 136 99-109 (1989)
7 S. H. Lee, E. Sakai, M. Daimon and W. K. Bang, 'Char-acterization of Fly Ash Directly Collected from Electrostatic Precipitator,' Cem. Concr. Res., 29 [11] 1791-97 (1999)   DOI   ScienceOn
8 S. H. Lee, E. Sakai, K. Watanabe, T. Yanagizawa and M. Daimon, 'Properties of Classified Fly Ashes by Using Electrostatic Precipitator and the Modification of Fly Ashes by the Removal of Carbon,' J. Soc. Mat. Sci. Jpn., 48 [8] 837-42 (1999)   DOI
9 S. Nagataki, E. Sakai and T. Takeuchi, 'The Fluidity of Fly Ash-Cement Paste with Superplasticizer,' Cem. Concr. Res., 14 [5] 631-38 (1984)   DOI   ScienceOn
10 S. Hosino, Y. Ohba, E. Sakai and M. Daimon, 'Relation between the Properties of Inorganic Powders and the Fluidity of Cement Pastes,' JCA Proceedines of Cement & Concrete, 50 186-91 (1996)
11 D. Kumio and O. Levenspiel, Fludization Engineering, pp. 61-91, Butterworth-Heinemann, Boston, 1991
12 A. K. H. Kwan, C. F. Mora and H. C. Chan, 'Particle Shape Analysis of Corase Aggregate Using Digital Image Pro-cessing,' Cem. Concr. Res., 29 [12] 1403-10 (1999)   DOI   ScienceOn
13 C. F. Mora and A. K. H. Kwan, 'Sphericity Shape Factor and Convexity Measurement of Coarse Aggregate for Con-crete Using Digital Image Processing,' Cem. Concr. Res., 30 [3] 351-58 (2000)   DOI   ScienceOn
14 W. C. Krumbein, 'Measurement of Geological Significance of Shape and Roundness of Sedimentary Particles,' Sediment Petrol, 11 64-72 (1991)
15 H. Wadel, 'Volume, Shape and Roundness of Quartz Particles,' Geology, 43 250-80 (1935)   DOI
16 R. D. Barksdale, M. A. Kemp, W. J. Sheffield and J. L. Hubbard, 'Measurement of Aggregate Shape, Surface Area and Roughness,' Transportation Reserch Record, 1301 107-16 (1991)