C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
C21B 13/14 (2006.01) C21B 11/10 (2006.01) C21B 13/00 (2006.01)
Patent
CA 2437254
The invention relates to a method for producing a melt iron in an electric arc furnace which comprises several electrodes, is fitted with a hearth and contains a heel, on top of which is disposed a non-foaming liquid slag. The inventive method comprises the following steps: the reduction of the metallic fillers to form pre-reduced metallic fillers comprising excess free carbon; the hot transfer of said pre-reduced metallic fillers inside an inert gas curtain into a heel contained in the electric arc furnace; the mixing of the heel through the injection of gas so as to prevent crust formation; the smelting of the pre-reduced metallic fillers in the electric arc furnace in order to produce the melt iron.
Procédé de production de fonte liquide dans un four électrique à arc comprenant plusieurs électrodes, équipé d'une sole et contenant un pied de bain surmonté d'un laitier liquide non moussant, le procédé comprenant les étapes suivantes : - réduction de fines métalliques pour former des fines métalliques préréduites comprenant un excès de carbone libre, - transfert à chaud des fines métalliques préréduites à l'intérieur d'un rideau d'un gaz inerte dans un pied de bain contenu dans le four électrique à arc, - brassage du pied de bain par injection de gaz de manière à éviter la formation de croûtes, - fusion des fines métalliques préréduites dans le four électrique à arc pour obtenir de la fonte liquide.
Berg Paul
Lonardi Emile
Parasch Fred
Roth Jean-Luc
Weisgerber Fred
Gowling Lafleur Henderson Llp
Paul Wurth S.a.
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