Arc Detection in DC Arc Furnaces

  • Quinn G Reynolds
  • Christopher J Hockaday
  • Dominic T Jordan
  • Ian J Barker
Conference paper


A direct-current (DC) plasma arc furnace is a type of electric furnace used for metallurgical operations. The successful operation of DC furnaces depends to a large extent on gaining a fundamental understanding of the arc phenomenon itself, and ensuring its presence in the furnace at all times. A method for detection of the presence of the arc in a DC circuit is presented, along with discussion of why this may be of value for certain modes of furnace operation such as brush-arc. The theoretical development of the method is presented along with supporting experimental work conducted on large-scale pilot-plant facilities.


Furnace Plasma Arc Control Measurement Modelling 


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  1. 1.
    R.T. Jones and T.R. Curr. “Pyrometallurgy at Mintek”, Proceedings of Southern African Pyrometallurgy 2006, ed. R.T. Jones (Johannesburg, South Africa: Southern African Institute of Mining and Metallurgy, 2006), 127–150.Google Scholar
  2. 2.
    Q.G. Reynolds and R.T. Jones, “Semi-empirical modelling of the electrical behaviour of DC-arc smelting furnaces”, Journal of the South African Institute of Mining and Metallurgy, 7 (2004), 345–351.Google Scholar
  3. 3.
    C. Walker, K. Sutherland, B. Marshall, J.M.A. Geldenhuis, J. Els, N. Voermann, and B. Wasmund. “Conversion to Partially Open Bath Smelting on Highveld Ironmaking Furnaces”, Proceedings of the European Metallurgical Conference 2007, ed. GDMB Gesellschaftder Metallurgen und Bergleute e.V. (Clausthal-Zellerfeld, Germany: GDMB Gesellschaft der Metallurgen und Bergleute e.V., 2007) 895–914.Google Scholar
  4. 4.
    Q.G. Reynolds, “The dual-electrode DC arc furnace — modelling brush arc conditions”, Journal of the Southern African Institute of Mining and Metallurgy, 7 (2012), 605–611.Google Scholar
  5. 5.
    Q.G. Reynolds, R.T. Jones and B.D. Reddy. “Mathematical and computational modelling of the dynamic behaviour of direct-current plasma arcs”, Proceedings of the 12th International Ferroalloys Congress (INFACON XII), ed. A. Vartiainen (Espoo, Finland: Outotec Oyj, 2010), 789–801.Google Scholar
  6. 6.
    B. Bowman. “Properties of arcs in DC furnaces”, Proceedings of the 52nd Electric Furnace Conference, ed. Iron and Steel Society (Nashville TN, USA: Iron and Steel Society, 1994), 111–120.Google Scholar
  7. 7.
  8. 8.
    I.J. Barker, M.S. Rennie, C.J. Hockaday and P.J. Brereton-Stiles. “Modes of electrical conduction in industrial silicon-type furnaces”, Proceedings of Silicon for the Chemical Industry VIII, ed. H.A. Oye, H. Brekken, T. Foosnes and L. Nygaard (Trondheim, Norway: Norwegian University of Science and Technology (NTNU), 2006), 79–90.Google Scholar
  9. 9.
    I.J. Barker, M.S. Rennie, C.J. Hockaday and P.J. Brereton-Stiles. “Measurement and Control of Arcing in a Submerged-Arc Furnace”, Proceedings of the 11th International Ferroalloys Congress (INFACON XI), ed. R.K. Das and T.S. Sundaresan (Mumbai, India: The Indian Ferro Alloys Producers Association, 2007), 685–694.Google Scholar

Copyright information

© TMS (The Minerals, Metals & Materials Society) 2014

Authors and Affiliations

  • Quinn G Reynolds
    • 1
  • Christopher J Hockaday
    • 1
  • Dominic T Jordan
    • 1
  • Ian J Barker
    • 2
  1. 1.MintekRandburgSouth Africa
  2. 2.MintekRandburgSouth Africa

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