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PELLETIZATION OF IRON ORE CONCENTRATE FROM FLUORSPAR TAILINGS
Abstract
Many low grade iron ore deposits which were previously ignored are being treated due to depletion of high grade iron ore deposits. Haematite flotation concentrate from a reverse flotation of fluorspar tailings was characterised and agglomerated using bentonite and coke. The effect of bentonite and coke concentrations on mechanical strength and metallurgical characteristics of the wet and baked pellets was investigated. It was found that the concentrate contained 60.5% Fe, 4.24% silica and other minor elements. Major mineral phases present were hematite, magnetite and silica. A maximum wet drop number of 3 and wet strength of 2.85N was obtained when using 1.25 and 0.75wt% bentonite respectively. The maximum dry and baked strength obtained was 28.1N and 2690N respectively whilst using 1.25wt% bentonite and no coke. Porosity of the baked pellets was not affected very much with change in coke concentration which is not the usual case with iron ores. At high coke concentration (3wt %), the pellets contained spinels.
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References8
Fillipov, L.O., Severov, V.V., Filipova, I.V. An overview of the beneficiation of iron ores via reverse cationic flotation, International journal of mineral processing, vol. 127, pp 62-69, 2014.
Nheta, W., Lubisi, T.P., Masemola, S. Makhatha, E. "Benficiation of Fluorspar Tailings by Reverse Flotation." Proceedings of the World Congress on Mechanical, Chemical and Material engineering, Barcelona, Spain, 2015, pp 346-1 346-6.
Kawatra, J.J., Halt, J.A. Binding effects in Hematite and Magnetite concentrates, International Journal of Mineral Processing, vol.99, pp 39-42, 2011.
Mbele, P. Pelletization of Sishen concentration, The Journal of the South African Institute of Mining and Metallurgy, vol. 112, pp 221-228, 2012.
Apelqvist, A.J., Forsmo, S.P.E., Bjorkman, B.M.T., Samskog, P.O. Binding mechanism in wet iron ore green pellets with bentonite binder, Power Technology, vol 169, pp 147-158, 2006.
Eisele, T.C., Kawatra, S.K. A review of binders in iron ore pelletization, Mineral processing and Extractive Metallurgy Review, An International Journal, vol 24, pp 1- 90, 2003.
Mandal, A.K., Sinha,O.P. Characterization of Fluxed iron ore Pellets as Compared to Feed Material for Blast Furnace, Journal of Progressive Research in Chemistry, vol. 2, pp 74-82, 2015.
IIjana, M., Kempapainen, T.P., Mattila,O., Pisila, E., Kondakov, M., Fabritious, T. Effect of adding limestone on the metallurgical properties of iron ore pellets, Internation Journal of Mineral Processing, vol. 141, pp 34-43, 2015.
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