Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1981-12-04
1983-07-12
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 53, C21C 702
Patent
active
043928870
ABSTRACT:
A desulfurization method in which an iron melt, carefully skimmed from slag in a ladle, is covered with about 1 to 2 kg. of lime per ton of iron, the melt is deoxidized to at most 35 ppm of oxygen and is then blown with a mixture of lime, calcium fluoride and metallic aluminum in an inert gas by means of a lance immersed in the bath so that the outlet of the lance is at an average depth of about 1500 mm below the bath surface.
REFERENCES:
patent: 3575695 (1971-04-01), Miyashuta
patent: 3885957 (1975-05-01), Richter
patent: 3998625 (1976-12-01), Koros
patent: 4036635 (1977-07-01), Klapdar
patent: 4040818 (1977-08-01), Clegg
patent: 4066444 (1978-01-01), Kosmider
Arbed S.A.
Dubno Herbert
Rosenberg P. D.
Ross Karl F.
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