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Separation of High Purity and High Carbon Fly Ash by Electrostatic Method  

한오형 (조선대학교 자원공학과)
깅현호 (조선대학교 자원공학과)
Publication Information
Resources Recycling / v.12, no.2, 2003 , pp. 45-53 More about this Journal
Abstract
In 2001, Korea produced a total of 4.91 million metric tons of fly ash, approximately 63.3% of which was recycled. Almost all of the recycled fly ash are used in concrete mixtures and cement industry. Therefore, in order to develop a new usage to increase the utilization of the fly ash, conductive induction was used in this research rather than triboelectrostatic. By applying conductive induction, we could verify the possibility of obtaining high purity fly ash below 1%LOI and high carbon fly ash over 70%LOI from raw fly ash. In this test, the potential difference between the two electrodes was conducted by changing the range of 8 to 16 kV.
Keywords
conductive induction; high purity fly ash; high carbon fly ash; potential difference;
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1 Kelly, E. G. and Spottiswood, D. J.: 'The Theory Electro static Separations: A Review Part II. Particle Chargeing', Mineral Engineering, 2(2), 193-205 (1989)   DOI   ScienceOn
2 Stencel, J. M. et al.: 'Technology Development for Carbon-Ash Beneficiation by Pneumatic Transport, Triboelectric Processing', 1999 International Ash Utilization Symposium, October 18-20, Lexington, Kentucky (1999)
3 Edward K. Levy and Carlos Herrera: 'Ash Beneficiation Using Fluidized Bed Separation, 1997 International Ash Utilization Symposium, 467-470, Lexington, Kentucky (1977)
4 Inculet, I. I.: 'Electrostatic Mineral Separation, Research Studies Press Ltd', London, 85-93 (1984)
5 한오형, 전호석, Roe-Hoan Yoon: '석탄회로부터 미연탄소분 제거를 위한 정전분리기술 개발', 한국자원공학회지, 38(6), 416-423 (2001)
6 Tennal, K. B. et al.: 'Triboelectric Separation of Granular Matehals', IEEE Industry Applications Society Annual Meeting, Louisiana, October 5-8 pp.1724-1729 (1997)
7 Stencel, J. M., Schaefer, J. L. Ban, H. and Finseth, D.: 'Method and Apparatus for Triboelectric-Centrifugal Separation', U. S. Patent 5,755,333 (1998)
8 Ban H. et al.: 'Fundamentals of Triboelectrostatic Separation: A Discussion on Particle Charge, Particle Size and Separation', Preprint, Annual Meeting of the Society of Mining, Metallurgy and Exploration, Inc. (SME), Denver, CO. (1997)
9 Inculet, I. I., Norberg, K. E. and Hepher, N. M.: 'Method of Apparatus for Separation Particulate Materials', U.S. Patent 4,517,078 (1985)
10 Roe-Hoan Yoon, Oh-Hyung Han, Eric S. Yan and Byung-Wook Park: 'Electrostatic Method of Separating Particulate Materials', U.S. Patent 6,320,148 B1 (2001)
11 Hepher, N. M.: 'Apparatus for Separating Particulate Materials', U. S. Patent 4,556,486 (1985)
12 이희상: '국내외 석탄회 발생 및 처리현황', 석탄회 활용기술 연구회 워크숍, 3-15 (2002)
13 Bittner, J. D.: 'STI Fly Ash Separation System: Operating History at New England Power's Brayton Point Plant', 12th International Symposium on Coal Combustion By-Product(CCB) Management and Use. EPRI TR-107055-V2, 2, 62-1-64-5 (1997)