Electric arc furnace arrangement for producing steel

Details Electric arc furnace arrangement for producing steel Electric arc furnace arrangement for producing steel

C - Chemistry, Metallurgy

21

C

C21C 5/52 (2006.01) C21B 11/10 (2006.01) C21C 5/56 (2006.01) F27B 1/02 (2006.01) F27B 3/00 (2006.01) F27B 3/08 (2006.01) F27B 3/18 (2006.01) F27D 11/10 (2006.01)

Patent

CA 2083129

There is disclosed an electric arc furnace for the production of steel by melting scrap, in particular iron scrap, and/or sponge iron and/or pig iron as well as fluxes in a furnace vessel, into which at least one graphite electrode projects, which is displaceable in its longitudinal direction, wherein an electric arc is ignited between the graphite electrode and the charging stock. To achieve a particularly high energy input, the graphite electrode projects into a lower part of the furnace vessel from aside and the lower part, in the region of the graphite electrode, has an enlargement radially protruding outwardly relative to the upper part.

Cette invention concerne un four à arc électrique servant à la production d'acier par fusion de déchets métalliques, en particulier bocage de fonte et/ou éponge de fer et/ou fonte de première fusion, ainsi que de fondants. Le four comporte au moins une électrode en graphite mobile dans le sens de sa longueur, l'arc électrique s'établissant entre la pointe de celle-ci et la charge du four. Pour atteindre un niveau d'énergie de fonte particulièrement élevé, l'électrode pénètre dans la partie inférieure du four par le côté et celui-ci présente, dans cette région, un renflement radial par rapport à sa partie supérieure.

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