SciELO - Scientific Electronic Library Online

vol.111 issue10ISACONVERT TM: continuous converting of nickel/PGM mattesMineralogical solutions for pyrometallurgical problems author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717
Print version ISSN 0038-223X


JONES, R.T; REYNOLDS, Q.G; CURR, T.R  and  SAGER, D. Some myths about DC arc furnaces. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.10, pp.665-674. ISSN 2411-9717.

DC arc furnaces are widely used for steel scrap melting as well as for reductive smelting of ore fines. Industrial smelting applications include the smelting of chromite to produce ferrochromium, the smelting of ilmenite to produce titania slag and pig iron, and the recovery of cobalt from nonferrous smelter slags. A number of myths and misconceptions are widely held, especially regarding: the age of the technology, the use of a hollow electrode, arc stability and shape, arc and bath radiation, interaction between the arc and molten slag, electrical behaviour of arcs and slags, a comparison between AC and DC furnaces, DC reactors, the lifespan of bottom electrodes, and the applicability of DC arc furnaces to various metallurgical systems.

Keywords : pyrometallurgy; DC arc furnace; myths; history; hollow electrode; radiation; resistance; flicker; AC.

        · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License