Abstract
Because of increasing production of fine coal during mining over the past century and because of inefficient fine-coal recovery technologies, a vast reserve of high-quality coal now exists in refuse ponds. A novel fine-coal circuit, consisting of a hindered-bed classifier, an enhanced gravity concentrator and a flotation column, was evaluated for the recovery of fine coal from refuse ponds. The treatment of a pond derived from Pittsburgh No. 8 seam coal resulted in the production of a premium fuel containing less than 5% ash and a calorific value of about 30,170 kJ/kg with 60% mass yield. Results from the treatment of two refuse pond materials are presented in this paper.
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Arnold, B.J., and Aplan, F.F., 1986, “The effect of clay slimes on coal flotation. Part I: The nature of the clay,” Int. Journal of Mineral Processing, 17, pp. 225–242.
Chernosky, F.J., and Lyon, F.M., 1972, “Comparison of the flotation and adsorption characteristics of ore and coal pyrite with ethyl xanthate,” Transactions, SME-AIME, Vol. 52, pp. 11–18.
Davis, V.L., and King, J.P., 1997, “Fine coal impoundment recovery: Plant practices and design considerations,” Proceedings 14th International Coal Preparation Conference, Lexington, Kentucky, April 29-May 1, pp. 35–51.
Drummond, R.B., Swanson, A.R., Nicol, S.K., and Newling, P.G., 1998, “Optimization studies on a 75 t/h teetered bed separator at Stratford coal preparation plant,” Proceedings XIII International Coal Preparation Congress, A.C. Partridge and I.R. Partridge, eds., Australian Coal Preparation Society, pp. 215–224.
Honaker, R.Q., Singh, N., and Govindarajan, B., 2000, “Application of dense-medium in an enhanced gravity separator for fine coal cleaning,” Minerals Engineering, Vol. 13, No. 4, pp. 415–427.
Honaker, R.Q., 1996, “Hindered bed classifiers for fine coal cleaning,” Proceedings 13th International Coal Preparation Conference, Lexington, Kentucky, pp. 59–70.
Honaker, R.Q., Paul, B.C., Wang, D., and Ho. K., 1995, “Enhanced gravity separation: an alternative to flotation,” High Efficiency Coal Preparation: An International Symposium, S.K. Kawatra, ed., SME, Littleton, Colorado, pp. 69–78.
Honaker, R.Q., Wang, D., and Ho, K., 1996, “Application of the Falcon Concentrator for fine coal cleaning,” Minerals Engineering, Vol. 9, No. 11, pp. 1143–1156.
Honaker, R.Q., Paul, B.C., Wang, D., and Huang, M., 1995, “Application of centrifugal washing for fine-coal cleaning,” Minerals and Metallurgical Processing, May, pp. 80–84.
Lai, R.W., 1990, “Comparative study of the surface properties and the reactivity of coal pyrite and mineral pyrite,” Minerals and Metallurgical Processing, February, p. 43.
Luttrell, G.H., Kohmuench, J.N., Stanley, F.L., and Trump, G.D., 1998, “An evaluation of multi-stage spiral circuits,” Proceedings, 16th International Coal Preparation Conference, Lexington, Kentucky, April 27–29, pp. 79–88.
Luttrell, G.H., Honaker, R.Q., and Phillips, D.I., 1995, “Enhanced gravity separators: new alternatives for fine coal cleaning,” Proceedings, 12th International Coal Preparation Conference, Lexington, Kentucky, May 2–4, pp. 281–292.
Mankosa, M.J., Stanley, F.L., and Honaker, R.Q., 1995, “Combining hydraulic classification and spiral concentration for improved efficiency in fine coal recovery circuits,” High Efficiency Coal Preparation, S.K. Kawatra, ed., SME, Littleton, Colorado, pp. 99–107.
Mohanty, M.K., Honaker, R.Q. and Ho, K., 1998, “Coal flotation washability: development of an advanced procedure,” International Journal of Coal Preparation, Vol. 19, pp. 51–67.
Reed, S., Roger, R., Honaker, R.Q., and Mankosa, M.J., 1995, “Inplant testing of the Floatex density separator for fine coal cleaning,” Proceedings, 12th International Coal Preparation Conference, Lexington, Kentucky, pp. 163–174.
Riley, D.M., and Firth, B., 1993, “Application of an enhanced gravity separator for cleaning fine coal,” Proceedings, 10th Inter. Coal Prep. Conference, Lexington, Kentucky, p. 46.
Toney, T.A., Fish, L.R., and Bethell, P.J., 1998, “Increase your plant recovery: more efficient spiral circuits,” Preprint No 98–84, SME Annual Meeting, March, Orlando Florida.
Venkatraman, P., Luttrell, G.H., Yoon, R.H., Knoll, F.S., Kow, W.S., and Mankosa, M.J., 1995, “Fine coal cleaning using the multi-gravity separator,” High Efficiency Coal Preparation: An International Symposium, S.K. Kawatra, ed., Soc. of Mining, Metallurgy, & Explor., Littleton, Colorado, pp. 109
Yoon, R.-H., Lagno, M., and Luttrell, G.H., 1991, “On the hydrophobicity of coal pyrite,” Processing & Utiliz. of High Sulfur Coals (IV), Dugan et al., eds., Elsevier Science Publishers, Amsterdam, p. 241.
Yoon, R.-H., Luttrell, G.H., Adel, G.T., and Mankosa, M.J., “The application of Microcel - column flotation to fine coal cleaning,” Coal Preparation, Vol. 10, pp. 177–188.
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Honaker, R.Q., Patil, D.P., Sirkeci, A. et al. Production of premium fuels from coal refuse pond material. Mining, Metallurgy & Exploration 18, 177–183 (2001). https://doi.org/10.1007/BF03403246
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DOI: https://doi.org/10.1007/BF03403246