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Effect of the Oxidation of Fixed Carbon on the Oily Collector Addition for the Coal Briquette Ash Flotation  

Yoo, Seung-Woo (세명대학교 대학원 자원순환처리전공)
Park, Hong-Kyu (세명대학교 대학원 자원순환처리전공)
Jung, Moon-Young (세명대학교 바이오환경공학과)
Publication Information
Journal of the Korean Society of Mineral and Energy Resources Engineers / v.46, no.5, 2009 , pp. 582-588 More about this Journal
Abstract
Separation of unburned carbon is needed from coal briquette ash (CBA) in order for recycling. In general, natural flotability of coal is high because of its pristine hydrophobic surface. However, hydrophobicity of the coal decreased when it was heavily oxidized. Since unburned carbon in the CBA was heavily oxidized during combustion process, its flotation was expected to be difficult. Flotation for anthracite (raw material of coal briquette) and the CBA was carried out to find out the effect of oxidation of fixed carbon on the dosage of oily collector. In case of the anthracite flotation. its recovery was about 70 wt% without an oily collector. Also, the increase of oily collector increased its recovery up to 90 wt% with 500 g/ton of collector consumption. On flotation of the CBA float product was not obtained without an oily collector. As the dosage of oily collector increased its recovery to 80 wt% with 1,500 g/ton of collector consumption. Therefore, it was confirmed that the flotation of the CBA required three times more oily collector than that of the anthracite in order to obtain the similar flotation result from the CBA and the anthracite.
Keywords
Coal briquette ash; Unburned carbon; Oxidation; Flotation; Oily collector;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 강종봉, 조범래, 1999, '반응소결을 통한 다공성 뮬라이트의 제조,' 한국재료학회, Vol. 9, No. 6, pp. 630-634
2 정문영, 1991, "석탄의 산화와 염부선에 관한 연구," 세명논총, 제 1집, pp. 285-302
3 Berkowifz N., 1979, An introduction to coal technology, New York, Academic Press, p. 345
4 Brown, D.J., 1962, Coal flotation, Froth Flotation 50th anniversary, Furestenau, D. W, ed, AMIE, New York, pp. 570-587
5 Park S.J., et al., 2007, "Removal of unburned carbon from coal briquette ash by flotation," Proceeding of the 9th International Symposium on East Asian Resources Recycling Technology, October 29～November 2, 2007, Sendai, Japan, pp. 288-291
6 Sun S.C., 1954, "Effects of oxidation of coals on their flotation properties," Trans. AIME, Vol. 199, pp. 396-401
7 Wen W.W., Sun S.C., 1981, "Electrokinetic study on the oil flotation of oxidized coal," Sep. Sci. Technol, Vol. 16, pp. 1491-1521   DOI   ScienceOn
8 Al-Wakeel M.I., Li C.L., Miller J.D., 2009, "Significance of liberation characteristics in the fatty acid flotation of Florida phosphate rock," Minerals Engineering, Vol. 22, pp. 244-253   DOI   ScienceOn
9 Gray M.L., et al., 2002, "Physical cleaning of high carbon fly ash," Fuel Processing Technology, Vol. 76, pp. 11-21   DOI   ScienceOn
10 Aplan, F.F, 1976, Coal flotation, Flotation, A.M. Gaudin Memorial Vol. 2, Furestenau, D. W, ed, AIME, New York, pp. 1235-1264
11 Wills, B.A., Tim Napier-Munn, 2006, Wills' Mineral Processing Technology, 7th, Butterworth-Heinemann, pp. 14-15, p. 17, p. 265
12 Jena M.S., Biswal S.K., Rudramuniyappa M.V., 2008, "Study on flotation characteristics of oxidised Indian high ash sub-bituminous coal," Int. J. Miner. Process, Vol. 87, pp. 42-50   DOI   ScienceOn
13 환경부, 2008, "2008환경통계연감," pp. 143-151
14 정문영, 신희영, 박재구, 2000, "역부선법에 의한 국내산 무연탄회의 정제," 한국자원공학회지, 제 37권, 제 1호, pp. 72-79
15 현종영, 정수복, 채영배, 2005, "점토벽돌 원료로서 선탄폐석의 활용," 자원리싸이클링, 제 14권, 제 4호, pp. 3-9
16 장용선, 1997, '석탄회의 이화학적 변이성과 광물학적 특성,' 광물과 산업, 제 10권, 제 2호, pp. 8-13
17 한국광해관리공단, 2009.4.1, www.mireco.or.kr
18 Schneider H., Schreuer J., Hildmann B., 2008, "Structure and properties of mullite-A review," Journal of the European Ceramic Society, Vol. 28, pp. 329-344   DOI   ScienceOn