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US 4,564,388 AGranted
Method for continuous steelmaking
AssigneeIntersteel Technology, Inc.
InventorJohn A. Vallomy
Life of this patent
Estimating the term…
Abstract
A method for the continuous operation of an electric steelmaking furnace, including preheating charge materials, charging and tapping while maintaining full electric power, and having good control over both quality and product chemistry.
Claims23
A method for the continuous refining of steel, comprising:
- segregating iron-bearing scrap according to its composition;
- preheating said scrap;
- feeding said iron-bearing scrap, direct reduced iron, or a mixture thereof to an electric powered steelmaking furnace for melting and refining therein;
- feeding slag formers to the steelmaking furnace;
- introducing carburizers into the steelmaking furnace;
- heating the charge electrically to melt the charge and form a molten metal bath within the furnace with a molten slag layer on said molten metal bath;
- maintaining said slag in a foaming condition during the steel making process;
- continuously feeding metallics, slag formers, and carburizers to said furnace;
- maintaining full electric power to said furnace at all times during the charging, melting and refining operations;
- and
- tapping said furnace while continuously feeding said furnace.
8 more elements
Dependencies are inferred from the claim text.