Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-02-24
1977-10-04
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 59, C21C 534
Patent
active
040521974
ABSTRACT:
A process for continuous refining in which liquid pig iron is supplied to a pig iron melt which is at least partially refined while said melt is being intensively agitated, the refining means (preferably oxygen) is introduced into the pig iron melt by means of tuyeres mounted in the refining vessel, and discharging the refining means beneath the surface of thepig iron melt, the tuyeres being positioned and the refining means being furnished so that the kinetic energy of the refining means contributes to the bath agitation. The tuyeres are preferably composite tuyeres like those described in U.S. Pat. Nos. 3,706,549 issued Dec. 19, 1972 and 3,771,998 issued Nov. 13, 1973, for discharging oxygen surrounded by a gaseous and/or liquid hydrocarbon, and possibly lime or other solid powder into the bath.
REFERENCES:
patent: 2962277 (1960-11-01), Morrill
patent: 3556775 (1971-01-01), Kuratomi
patent: 3706549 (1972-12-01), Knuppel
patent: 3942978 (1976-03-01), Oberg
Brotzmann Karl
Knuppel Helmut
Mahn Gustav
Rheinlander Paul
Field Lawrence I.
Rosenberg Peter D.
Stahlwerke Peine-Salzgitter AG
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