Investigation of the metallurgical conditions in a three-phase-a.c. plasma-heated ladle furnace
In secondary steelmaking, graphite electrodes are used for heating the melt in ladle furnaces using electrical energy. This method of heating causes changes in the composition of the melt owing to carbon pickup from the graphite electrodes and oxidation of alloying elements during heating. Compared with graphite-electrode arc heating, the use of plasma torches as energy source offers metallurgical advantages in the heating of the melt, due to the protective gas atmosphere in the heating area and the absence of graphite electrodes. The aim of the present research project was to examine the metallurgical behaviour of the plasma-heated ladle furnace in secondary steelmaking. This included the behaviour of the carbon, nitrogen movement, oxidising behaviour and the selective vaporisation of alloying elements and bath/slag reactions (desulphurisation). Also included in the examination were operational parameters such as heating rate, energy consumption and purging gas parameters.
Bibliographic Reference: EUR 13423 DE (1991) 66 pp., FS, ECU 8.75
ISBN: ISBN 92-826-0559-0
Record Number: 199110712 / Last updated on: 1994-12-02
Original language: de
Available languages: de