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During this study, the means for better energy and metallurgical control of electric arc furnaces were implemented. An improvement in energy transfer from the electric arc to the metal in a flat bath was obtained by using foaming slag. The reduction of oxidation of the slag using this technique and minimisation of the energy losses through fumes were studied. It was possible to show the detrimental thermal role of air intake, which represents about three quarters of the fumes' volume and is partly responsible for oxidation of the charge. An adjustment of the quantities of charged carbon to the quantities of blown oxygen makes it possible to minimise the energy of the fumes, while limiting oxidation in the slag. The energy and metallic losses through the slag were studied by a consideration of the balance between the slag phases, the steel and the furnace atmosphere. It was possible to deduce an optimal method of slag management for the elaboration of carbon contents of about 0.06% in the furnaces studied.

Additional information

Authors: DESTANNES P, Institut de Recherches de la Sidérurgie Française, Saint-Germain-en-Laye (FR)
Bibliographic Reference: EUR 13476 FR (1991) 55 pp., FS, ECU 6.25
Availability: (2)
ISBN: ISBN 92-826-2560-5
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