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Absorption of CO2 in EAF Reducing Slag from Stainless Steel Making Process by Wet Grinding
Abstract:In the current study, we have conducted an experimental investigation on the utilization of electronic arc furnace (EAF) reducing slag for the absorption of CO2 via wet grinding method. It was carried out by various grinding conditions. The slag was ground in the vibrating ball mill in the presence of CO2 and pure water under ambient temperature. The reaction behavior was monitored with constant pressure method, and the changes of experimental systems volume as a function of grinding time were measured. It was found that the CO2 absorption occurred as soon as the grinding started. The CO2 absorption was significantly increased in the case of wet grinding compare to the dry grinding. Generally, the amount of CO2 absorption increased as the amount of water, weight of slag and initial pressure increased. However, it was decreased when the amount of water exceeds 200ml and when smaller balls were used. The absorption of CO2 occurred simultaneously with the start of the grinding and it stopped when the grinding was stopped. According to this research, the CO2 reacted with the CaO inside the slag, forming CaCO3.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062616Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1413
 Energy Information Administration of US Government, Available: http://www.eia.doe.gov/bookshelf/brochures/greenhouse/greenhouse.pdf.
 S. Bachu, J.J. Adams, Sequetration of CO2 in geological media in response to climate change: Capacity of deep saline aquifers to sequester CO2 in solution, Energy Conversion and Management 44, 2003, pp. 3151-3175.
 C. Song, Global challenges and strategies for control, conversion and utilization of CO2 for sustainable development involving energy, catalysis, adsorption and chemical processing, Catalysis Today 115, (2006), pp. 2-32.
 T.K. Flaathen, S.R. Gislason, E.H. Oelkers, A.E. Sveinbjrnsdttir:, Chemical evolution of the Mt. Hekla, Iceland, groundwaters: A natural analogue for CO2 sequestration in basaltic rocks, Applied Geochemistry, 2009, 24, pp. 463474.
 M. Kakizawa, A. Yamasaki, Y. Yanagisawa, A new CO2 disposal process via artificial weathering of calcium silicate accelerated by acetic acid, Energy 26, (2001), pp. 341354.
 World Consumption of Primary Energy by Energy Type and Selected Country Groups, 1980-2006: Energy Information Administration, U.S. Department of Energy, Available: http://www.eia.doe.gov/pub/ international/iealf/table18.xls.
 J. K. Stolaroff, G. V. Lowry, D. W. Keith, Using CaO- and MgO-rich industrial waste streams for carbon sequestration, Energy Conversion and Management 46, 2005, pp. 687-699. Ca2SiO4MgSiO3KAlSi3O8
 S. Eloneva, S. Teir, J. Salminen, C.J. Fogelholm, R. Zevenhoven, Fixation of CO2 by carbonating calcium derived from blast furnace slag, Energy 33, 2008, pp. 1461-1467.
 D. Bonenfant, L. Kharoune., S. Sauve, R. Hausler,P. Niquette, M. Mimeault, M. Kharoune, Molecular analysis of carbon dioxide adsorption processes on steel slag oxides, International Journal of Greenhouse Gas Control 3, 2009, pp.20-28.
 G.M. Hernandez, R.P. Lopez, F. Renard, J.M. Nieto, L. Charlet, Mineral sequestration of CO2 by aqueous carbonation of coal combustion fly-ash, Journal of Hazardous Materials 161, 2009, pp. 1347-1354.
 Iron and Steel Slag 2007 Report, Nippon Slag Association, Available: http://www.slg.jp/bib/download/fs-106.pdf.
 S. Yokoyama, M.N.N. Hisyamudin, Y. Nagao and M. Kawakami, Adsorption reaction of CO2 to CaO and waste cement under dry grinding, Extended Abstracts of International Symposium on Eco Topia Science 2005, Nagoya Japan, 2005, pp.718-711.
 S. Yokoyama, S. Sasaki, R. Sato, M.N.N. Hisyamudin, A. Susuki, M. Umemoto, Enhancement of reaction between CO2 and electric arc furnace oxidizing slag by grinding, Proceedings 4th International Congress on the Science and Technology of Steelmaking (ICS 2008), Gifu Japan, 2008.
 B.M.N Nik Hisyamudin, S. Yokoyama, M. Kawakami, M. Umemoto, Reaction between CO2 and CaO under dry grinding, submitted for publication.