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US 4,731,112 AGranted
Method of producing ferro-alloys
AssigneeMidrex International B.V. Rotterdam, Zurich Branch
InventorGlenn E. Hoffman
Life of this patent
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Abstract
A method of making a molten ferroalloy product in a melting furnace by charging a briquet consisting essentially of metallized iron, granulated alloy metal oxide, and a carbon source, such as coke breeze, to the melting furnace, burning solid carbonaceous material to reduce the alloy metal oxide to metallized form and to heat the charge to form a molten ferroalloy product. Fluxes and slag formers are also charged to the furnace as required.
Claims5
A method of producing a ferro-alloy comprising:
- forming compacts consisting essentially of a mixture of from 50% tp 88% metallized direct reduced iron fines which fines are from 60% to 97% metallized, from 5% to 15% solid carbonaceous material, and from 7% to 35% of an oxide of a metal selected from the group consisting of, silicon, nickel, chromium, manganese, titanium, vanadium, molybdenum, and cobalt;
- charging only said compacts, additional solid carbonaceous material to provide additional heat and reactive carbon, and slag formers to a melting furnace;
- and
- burning said solid carbonaceous material to reduce the oxides in said compacts, to melt the constituents, and to form a high alloy melt.
1 more element
Dependencies are inferred from the claim text.