Metallurgical apparatus – Process – Tuyere operation
Patent
1995-06-07
1997-06-03
Kastler, Scott
Metallurgical apparatus
Process
Tuyere operation
266 48, 266225, 266265, C22B 1500
Patent
active
056351305
ABSTRACT:
An improved oxygen blowing/fuel burner lance assembly for introducing, at selected times, a flow of oxygen and/or carbonaceous fuel material, such as fine-grained carbon or hydrocarbon gas (e.g., natural gas and the like), into an electric furnace vessel. The lance assembly includes a housing portion, a straight barrel having a first and connected to the housing portion and a second end connected to a lance tip. The lance tip includes a nozzle structure having at least one oxygen injection nozzle and at least one carbonaceous material injection nozzle which together define a burner assembly for dispensing a combined flow of carbonaceous fuel and oxygen from the lance which may be ignited to produce a flame for preheating a scrap charge in an electric furnace vessel. When the scrap is sufficiently melted through cooperation of the electric furnace electrodes and the burner, the oxygen and carbonaceous fuel material flows may be terminated to extinguish the burner flame, the oxygen flow may be restarted at a reduced flow rate to complete preheating/cutting (if necessary), or at a supersonic flow rate for refining/decarburizing of the molten steel bath.
REFERENCES:
patent: Re28769 (1976-04-01), Rymarchyk et al.
patent: 3620455 (1971-11-01), Berry
patent: 3823929 (1974-07-01), Rymarchyk et al.
patent: 3827632 (1974-08-01), Rymarchyk et al.
patent: 3912243 (1975-10-01), Chang
patent: 4047936 (1977-09-01), Chang
patent: 4083540 (1978-04-01), Berry et al.
patent: 4434005 (1984-02-01), Metz et al.
patent: 4653730 (1987-03-01), Wunsche et al.
patent: 5366537 (1994-11-01), Schlichting
EMPCO Brochure, UNILANCE Process Intensification System May 14,1986.
Glatz Gerald R.
Leczo Theodore J.
Rymarchyk, Jr. Nicholas M.
Berry Metal Co.
Kastler Scott
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