Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1975-07-25
1977-09-13
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 60, C21C 532, C21C 530
Patent
active
040479366
ABSTRACT:
An apparatus for refining hot metal to steel including a converter provided in the bottom thereof with imbedded concentric double-tube injectors for introducing oxygen enveloped by a shielding gas into the interior of the steel bath to oxidize impurities, and also including in the upper side wall thereof, water-cooled lance-burners for injecting oxygen and fuel into the freeboard space (area above the bath) of the converter to burn the combustibles of the bath gas. The coolant means for the said lance-burners may be introduced through the trunnions of the converter and piped by a distribution system to each of the lances. Alternatively, an overhead water-cooled lance may be used to enter the vessel in the vertical position through the mouth opening. Also, the overhead lance may have a curved shape and attached to a rotary arm which in turn is supported by a sliding column with the lance entering the converter through a hole in the hood by rotating the arm clockwise and leaving the converter by rotating the arm counterclockwise, the height of the lance being adjustable to vertical reciprocable movement of the sliding column. The invention also discloses a process of injecting either oxygen or oxygen and fuel to the space above the molten bath of the bottom-blow converter to generate additional heat to aid the steel refining operation, particularly to melt more scrap. The scrap can either be preheated before charging the hot metal or be melted together with hot metal without preheating.
REFERENCES:
patent: 2562813 (1951-07-01), Ogorzaly
patent: 2962277 (1960-11-01), Morrill
patent: 3839017 (1974-10-01), Schempp
Berry Metal Company
Myers Richard J.
Rosenberg P. D.
LandOfFree
Process for refining hot metal to steel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for refining hot metal to steel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for refining hot metal to steel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-271177