The effect of coke and bituminous coal on the reduction of medium-grade manganese ore in ferromanganese production was investigated. Charges of 30 kg medium grade manganese ore, 12 kg limestone and varied amounts of coke and coal were smelted in a Submerged Electric Arc Furnace (SAF) at temperatures of 1300°C to 1500°C. The composition of the ferromanganese and the slag were determined by X-Ray Fluorescence. It was found that using coke as a single reductant resulted in a 96% yield of ferromanganese which was higher than by using coal either as a single reductant or in a mixture of coal and coke. It was also found that using coke as a single reductant resulted in the lowest specific energy consumption. Using coal as reductant produced ferromanganese containing high sulfur and phosphorus.
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Ahmed A. Haifa H. El-Fawakhry M. K. El-Faramawy H & Eissa M. (2014). Parameters affecting energy consumption for producing high carbon ferromanganese in a closed submerged arc furnace. Journal of Iron and Steel Research International 21(7) 1-20. DOI:10.1016/S1006-706X(14)60103-5
Çardakli I. S. SevInç N. & Öztürk T. (2011). Production of high carbon ferromanganese from a manganese ore located in Erzincan. Turkish Journal of Engineering and Environmental Sciences 35(1) 31-38. DOI:10.3906/muh-1009-6.
Chaudhary P. N. Minj R. K. & Goel R. P. (2007). Development of a process for dephosphorisation of high carbon ferromanganese. Proceedings-International Ferro-Alloys Congress (INFACON) XI 18-21 February 2007 (pp. 288-296). New Delhi - India. The Indian Ferro Alloy Producers’ Association (IFAPA).
Chukwuleke O. P. Cai J. Chukwujekwu S. & Xiao S. (2009). Shift from coke to coal using direct reduction method and challenges. Journal of Iron and Steel Research International 16(2) 1-5. DOI: 10.1016/S1006-706X(09)60018-2.
Eissa M. El-faramawy H. Ahmed A. & Nabil S. (2012). Parameters affecting the production of high carbon ferromanganese in closed submerged arc furnace. Journal of Minerals & Materials Characterization & Engineering11(1) 1-20. DOI:10.4236/jmmce.2012.111001.
Gokarn P. (May 20 2012). Ferro Alloy Perspective or Steelmaker. Published in: https://www.slideshare.net/prabhashgokarn/ferro-alloy-perspectives-for-thesteelmaker?qid=3b96070d-78f7-43d1-8ea0-41d5d9b8f094&v=&b=&from_search=44
Hurd D. & Kollar J. (1991). Direct current electric arc furnaces. Pittsburgh Pennsylvania: The EPRI Center for Materials Production (CMP-063).
Hwang S. H. (2011). Phosphorus Removal From Manganese Ore by Plasma Treatment. Thesis 2011 The University of Utah United State of America.
Kunze J. & Degel R. (2004). New trends in submerged arc furnace technology. Proceedings - International Ferro-Alloys Congress (INFACON) X. 1 ̶ 4 February 2004 (pp. 444-454). Capetown-South Africa. Document Transformation Technologies (Doctech).
Lagendijk H. Xakalashe B. Ligege T. Ntikang P. & Bisaka K. (2010). Comparing manganese ferroalloy smelting in pilot-scale AC and DC submerged-arc furnaces. Proceedings - International Ferro-Alloys Congress (INFACON) XII 6 ̶ 9 June 2010 (pp. 498-508). Helshinki - Finland. Outotec Oyj.
Shim S. C. & Sano N. (1995). Thermodynamics of phosphorus in carbon-saturated manganese-based alloys. Proceedings - International Ferro-Alloys Congress (INFACON) VII 11 ̶ 14 June 1995 (611–620). Trondheim-Norway. The Norwegian Ferroalloy Research Organization (FFF).
Steenkamp J. D. & Basson J. (2013). The manganese ferroalloys industry in southern Africa. The Journal of The Southern Africa Institute of Mining and Metallurgy113(8) 667-676. Available from: http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2225-62532013000800014&lng=en&nrm=iso>. ISSN 2411-9717.
Tangstad M. & Olsen S. E. (1995). The ferromanganese process-material and energy balance. Proceedings - International Ferro-Alloys Congress (INFACON) VII 1–14 June 1995 (pp. 621-630). Trondheim-Norway. The Norwegian Ferroalloy Research Organization (FFF).
Vorob’ev V. P. Godunov A. D. & Ignat’ev A. V. (2009). Production of manganese alloys from rich highbasicity ore. Steel in Translation39(3) 243-247. DOI: 10.3103/S0967091209030152.