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US 4,543,124 AGranted
Apparatus for continuous steelmaking
AssigneeIntersteel Technology, Inc.
InventorJohn A. Vallomy
Life of this patent
Estimating the term…
Abstract
Apparatus for the continuous making of steel in an electric steelmaking furnace, having a charge material preheater, continuous charging means, and means for removing refined steel without removing the furnace electrodes from operation, wherein charging and tapping are accomplished while maintaining full electric power, and allowing for good control over both product quality and product chemistry.
Claims14
Apparatus for the continuous refining of steel comprising:
- an electric arc steelmaking furnace for melting and refining a metallic charge therein;
- electrodes extending into said furnace a distance beneath the slag level of a molten metal bath to be contained therein;
- feed means communicating with said furnace for introducing charge materials to the interior of said furnace;
- means communicating with said feed means for preheating charge materials within said feed means;
- gas seal means for providing a controlled atmosphere within said feed means;
- gas injection means communicating with said furnace beneath the normal molten metal bath level;
- and
- means for tilting said furnace up to 15.degree. from the vertical without removing said electrodes, for the purposes of slagging and tapping.
5 more elements
Apparatus for the continuous production of molten steel from direct reduced iron, comprising:
- a source of hot direct reduced iron;
- an electric arc steelmaking furnace for melting and refining a metallic charge therein;
- electrodes extending into said furnace a distance beneath the slag level of a molten metal bath to be contained therein;
- feed means communicating with said furnace for introducing direct reduced iron and other charge materials to the interior of said furnace;
- means communicating with said feed means for preheating charge materials within said feed means;
- gas seal means for providing a controlled atmosphere within said feed means;
- gas injection means communicating with said furnace beneath the normal molten metal bath level;
- means for tilting said furnace up to 15.degree. from the vertical without removing said electrodes, for the purposes of slagging and tapping;
- a track mounted ladle adapted for receiving molten steel upon each tap of said furnace;
- and
- a ladle metallurgy station adapted for communication with said ladle.
8 more elements
Dependencies are inferred from the claim text.