METHOD AND MELTING SYSTEM FOR MANUFACTURING A STEEL CONTAINING HIGH CONTENTS OF MANGANESE AND LOW CONTENTS OF CARBON

The invention relates to a method and a foundry for producing high-manganese, low-carbon steel (1), using liquid pig iron (2) or liquid carbon steel (3a) and slag-forming constituents (4). The aim of the invention is to avoid the problems associated with the process route in other crucibles, for exa...

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Bibliographische Detailangaben
Hauptverfasser:	ROSE LUTZ, WEISCHEDEL WALTER
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Beschreibung
Zusammenfassung:	The invention relates to a method and a foundry for producing high-manganese, low-carbon steel (1), using liquid pig iron (2) or liquid carbon steel (3a) and slag-forming constituents (4). The aim of the invention is to avoid the problems associated with the process route in other crucibles, for example electric-arc furnaces (18). High-manganese, low-carbon steel is subjected to a process, once liquid ferromanganese (5) and liquid steel (3a) have been introduced into an FeMn refinery converter (6a), and the carbon percentage is reduced to approximately 0.7 0.8 % by combined injection of oxygen (7) through top lances (8) and submersible nozzles (9). A part of the cold final product produced from a premelt is added as a coolant (10) and the carbon percentage is reduced to approximately 0.05 0.1 % C by continuous injection of oxygen (7) through the submersible nozzles (9).