Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1987-05-08
1989-05-09
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 1019, 75 44S, C22B 400
Patent
active
048286079
ABSTRACT:
A plasma-fired cupola is operated utilizing anthracite or bituminous coal or small size coke to replace foundry coke to melt turnings, borings and chips from machining cast iron and steel, wherein the turnings, borings and chips make up as much as 75% by weight of the metal charge, the remaining portion of the charge being larger scrap; adding alloy oxides to provide the alloy element in the iron produced and providing up to 25% of the carbon required as pulverized coal added via a plasma torch feed nozzle to economically produce a variety of irons in the plasma-fired cupola.
REFERENCES:
patent: 4001008 (1977-01-01), Stift
patent: 4530101 (1985-07-01), Fey
patent: 4611332 (1986-09-01), Santen
Buczkowski Bradley A.
Dighe Shyam V.
Katz Seymour
Peck Walter J.
Provis William H.
Boehr, Jr. Fred J.
Electric Power Research Institute
Rosenberg Peter D.
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