Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1994-11-10
1997-02-04
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 1061, C21B 1312
Patent
active
055993753
ABSTRACT:
A method of melting and refining metals by high-temperature impinging combustion products generated by a single or multiple oxy-fuel or fuel/oxygen/air combustors that direct a flame towards a predetermined area of scrap to be melted. Once a portion of charged scrap contacted by the flame or flames is melted, an injection of solid carbonaceous fuel is initiated, preferably through a combustion tunnel of at least one of the combustors. High velocity oxygen is directed, simultaneously with carbonaceous material, through at least one dedicated nozzle toward injected solid carbonaceous fuel to mix with this fuel and to generate CO, which is capable of forming foamy slag. Optionally, a supersonic stream or multiple streams of additional oxygen is also directed toward the iron-carbon melt to initiate rapid melt refining.
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American Combustion, Inc.
Andrews Melvyn
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