Abstract
Column flotation has proven to be the most effective technique for the flotation and recovery of ultrafine coal. The commercial application of columns in the coal industry is steadily increasing (Parekh et al., 1990; Yoon et al., 1992). For the flotation of coal or mineral air is used for generating bubbles. Using a conventional flotation cell, Miller and Mishra (1985) compared froth flotation behavior of fine coal using air, nitrogen and carbon dioxide gas. They concluded that carbon dioxide gas provided a higher rate of recovery and a lower ash content. The objective of the present study was to investigate the effect of various gases such as compressed air, nitrogen, argon, and carbon dioxide on the column flotation of fine coal.
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References
Miller, J.D., and Mishra, M., 1985, “Carbon dioxide flotation of fine coal,” Coal Preparation, 2, pp. 69–73.
Nandi, S.P., and Walker, P.L., 1964, “The differsion of nitrogen and CO2 from coal of various rank,” Fuel, 43, p. 385.
Parekh, B.K., Groppo, J.G., and Peters, W.J., 1990, “Column flotation circuit installation at the Powell Mountain Coal Company,” Proceedings of the 11th International Coal Preparation Congress, Tokyo, Japan, pp. 267–270.
Yoon, R.H., Luttrell, G.H., Adel, G.T., and Mankossa, M.J., 1992, “The Application of microcel column flotation to fine coal cleaning,” Coal Preparation, Vol. 10, pp. 177–188.
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Nonmeeting paper 97-303
Discussion of this peer-reviewed and approved paper is invited and must be submitted to SME prior to May 31, 1998.
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Khandrika, M., Parekh, B.K. Effect of various gases on the column flotation of fine coal. Mining, Metallurgy & Exploration 15, 48–49 (1998). https://doi.org/10.1007/BF03402786
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DOI: https://doi.org/10.1007/BF03402786