Steelmaking process

Details Steelmaking process Steelmaking process

1977-06-28

1979-09-25

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 12, 75 49, C21C 552, C21C 710

Patent

active

041689682

ABSTRACT:
A cold charge of steel scrap is melt cut and melted in an arc furnace provided with special oxygen-fuel burners by which rapid melting is promoted, the interior of the furnace being maintained under negative pressure by a fume evacuation and filtration means thereby to draw in secondary air from the outside atmosphere and, moreover, to increase the burner combustion efficiency. The arc furnace is provided with water cooling devices including a water-cooled ring, carbonaceous bricks, high-alumina ramming masses, and burner tiles in parts of the furnace wall and roof, particularly at wall parts where the burners are mounted, the wall above the slag line, and a roof part where an exhaust gas outlet is formed.

REFERENCES:
patent: 3197539 (1965-07-01), Hinds
patent: 3459867 (1969-08-01), Estes
patent: 3708599 (1973-01-01), Krause
patent: 3902889 (1975-09-01), Malin

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