Abstract
It is proposed to introduce contact sorption drying as a method to reduce the moisture content in coal fines. The aim of this study was to investigate the possibility of drying fine and ultra-fine coal using porous ceramic as the moisture sorbent. The main focus of this report is to define how the air temperature, particle size variations and mixing ratio would influence the contact between coal and ceramic for effective moisture adsorption. Drying of coal fines assisted by ceramic sorbents proved to be a viable concept as the ceramic was able to not only reduce the moisture content of fine coal, but of ultra-fine coal as well. The larger surface area of smaller ceramics allowed for efficient contact and consequently higher dewatering rates. The addition of more ceramic resulted in better contact with the wet coal and reduced the operating time quite significantly. Improved contact between the coal and ceramic therefore proved to be the main driving force during adsorption drying.
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Bibliography
Asmatulu, R. & Yoon, R.H. 2012. Effects of Surface Forces on Dewatering of Fine Particles. (In Separation Technologies for Minerals, Coal and Earth Resources. Society of Mining, Metallurgy, and Exploration, Inc. (SME). p. 95-101).
Bratton, R., Ali, Z., Luttrell, G., Bland, R. & McDaniel, B. 2012. Fine coal: Nano-drying technology. Coal Age, June: p. 50-57
Fourie, P.J.F., Van Der Walt, P.J. & Falcon, L.M. 1980. The beneficiation offine coal bydense-medium. Journal of the South African Institute of Mining and Metallurgy:357-361
Kudra, T. & Mujumdar, A.S. 2009. Advanced drying technologies. Second edition. p.169-184
Le Roux, M. An investigation into an improved method of dewatering fine coal. 2003. Potchefstroom: NWU. (Dissertation - Masters).
Le Roux, M., Campbell, Q.P. 2003. An Investigation into an Improved Method of Fine Coal Dewatering. Minerals Engineering, 16(10):999-1003.
Li, W., Xing, W. & Xu, N. 2006. Modeling of relationship between water permeability and microstructure parameter of ceramic membranes. Disalination, 192:340-345.
Lin, K-L., Lee, T-C., Chang, J-C. & Lan, J-Y. 2012. Water absorption and retension of porous cermaics cosintered from water diatomite and catalyst. Environmental progress & sustainable energy, 32(3):640-648.
Mangena, S.J., De Korte, G.J., McCrindle, R.I. & Morgan, D.L. 2003. The amenability of some Witbank bituminous ultra fine coals to binderless briquetting. Fuel Processing Technology, 85(2004):1647-1662.
Reddick, J.F., Von Blottnitz, H. & Kothuis, B. 2007. A cleaner production assessment of the ultra-fine coal waste generated in South Africa. The Journal of The South African Institute of Mining and Metallurgy, 107:811-816.
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van Rensburg, M.J., Le Roux, M., Campbell, Q.P. (2016). Drying of coal fines assisted by ceramic sorbents. In: Litvinenko, V. (eds) XVIII International Coal Preparation Congress. Springer, Cham. https://doi.org/10.1007/978-3-319-40943-6_114
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DOI: https://doi.org/10.1007/978-3-319-40943-6_114
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