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US 8,871,000 B2Granted
Electric furnace for producing molten metal having material recycling capability
AssigneeMidrex Technologies, Inc.
InventorMasahiko Tetsumoto
Life of this patent
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Abstract
The present invention relates generally to a smelting operation or the like, by which molten metal is produced from a metal oxide after metal oxide agglomerates are directly reduced and melted with a carbonaceous material in an electric heating and melting furnace. More specifically, the present invention relates to an electric furnace for producing molten metal that has material recycling capability, especially in-process material recycling capability.
Claims11
A method for producing molten metal from a raw material comprising oxide agglomerates by reduction and melting in a furnace comprising:
- providing a raw material to a furnace;
- selectively removing a portion of the raw material from the furnace through one or more openings disposed in a bottom side thereof such that a raw material bed or layer has predetermined characteristics over time;
- and
- reducing and melting the raw material bed or layer in the furnace.
1 more element
Dependencies are inferred from the claim text.