Abstract
During cleaning of high-ash coal mainly “wet” processes are used which require 5 to 10 tons water consumption per 1 ton of coal. Arrangement of recycling water supply reduces demand in “fresh” water, but transportation of huge volumes of water slurry requires high energy consumption. Dry cleaning of low rank coal which has not been exposed to preliminary preparation is inefficient. It was suggested that to provide dry cleaning of high-ash coal it would be reasonable to expose it to chemical heat treatment first, and then to direct the treated coal mass for physical and mechanical cleaning to get low-ash high-caloric product. It has been determined that in black coal exposed to medium temperature pyrolysis, as well as in brown coal, improvement of incombustible mineral fraction liberation is observed that facilitates further beneficiation with the use of combination of high intensity magnetic separation and triboelectrostatic separation. It has been determined that cleaned semicoke substantially exceeds both initial and cleaned coal by its qualities as a solid fuel, and tailings of semicoke dry cleaning can be utilised.
Keywords
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Maoming, F., et al, (2003), Fine coal dry classification. The European Journal of Mineral Processing and Environmental Protection, 3/2.
Soong, Y. Link, T.A. et al (2001), Dry beneficiation of Slovakian coal. Fuel Processing Technology, 72: 185-198.
Dwari, R. K.; Rao, H. K., (2007), Dry beneficiation of coal – a review, Mineral processing and extractive metallurgy Review, 28/3: 177-234.
Katalambula H., Gupta R. (2009), Low-grade coals: A review of some prospective upgrading technologies. Energy and Fuels, 23 (7): 3392-3405.
Domazetis G., Barilla P., James B., Glaisher R., (2008), Treatments of low-rank coals for improved power generation and reduction in Greenhouse gas emissions. Fuel Proc. Technology, 89 (1): 68-76.
Skov E.R., Neubauer D., (2007), Syncrude oil and upgraded syncoal production from mild temperature pyrolysis of LRC. Int. Freiberg Conf. on IGCC and XTL Technologies, 9 May, Freiberg, Germany.
Gong X., Zhou Sh., (2013), Development and perspective of lignite modification technology. Proc. 17 Int. Coal Preparation Congress, Istanbul, Turkey: 595-598.
Mikhalev J., Islamov S., (2003), High efficiency and eco-friendly low-grade coal upgrade technology. Proc. 17 Int. Coal Preparation Congress, Istanbul, Turkey: 707-709.
Sarunae N., Ness M., Bullinger C., Mathews J., Halleck P., (2009), A novel fluidized bed drying and density segregation process for upgrading low-rank coals. Int. J. Coal Prep. Util., 29 (6): 317-332.
Weinstein R., Snoly R., Oder R., (2003), Combining technology to make lignite into a premium fuel: using an integrated air and magnetic separation process. 18th Int. Low-Rank Fuels Symp., June 24-26, Billings, Montana.
Oder R., (2012), The Mag Mill: Innovation in dry coal cleaning Technology enhancing environment compatibility and resource sustainability. Int. Symp. Clean Coal Technology, September 24-26, Taiwan, China.
Turcaniova L., et el, (2004), The effect of microwave radiation on the triboelectrostatic separation of coal. Fuel, 2004, 83 (14-15); 2075-2079.
Royaei M., Joriani E., Chehren C., (2012), Combination of microwave and ultrasonic irradiations as a pretreatment method to produce ultraclean coal. Int. J. Coal Prep. Util., 32 (3): 143-155.
Trigwell, S., Tennal, K.B., Mazumder, M.K., Lindquist, (2013), D.A., Precombustion cleaning of coal by triboelectric separation of minerals. Particulate Science and Technology, 21, 353-364.
Golovanevsky V.A. et al., (2011), Vibration-induced phenomena in bulk granular materials. Int. J. Mineral Processing, 100: 79-85.
Arsentyev V. A., Dmitriev S.V., Mezenin A.O., Kotova E.L. (2016), Technology of recycling of fly ash at coal-fired power plants. Proc. 18. Int. Coal Preparation Congress, Saint-Petersburg, Russia.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this paper
Cite this paper
Arsentyev, V.A., Vaisberg, L.A., Ustinov, I.D., Gerasimov, A.M. (2016). Perspectives of Reduced Water Consumption in Coal Cleaning. In: Litvinenko, V. (eds) XVIII International Coal Preparation Congress. Springer, Cham. https://doi.org/10.1007/978-3-319-40943-6_168
Download citation
DOI: https://doi.org/10.1007/978-3-319-40943-6_168
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-40942-9
Online ISBN: 978-3-319-40943-6
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)
