Steelmaking apparatus

Details Steelmaking apparatus Steelmaking apparatus

1976-11-10

1978-03-07

Dost, Gerald A.

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

Offtake

75 12, 13 2R, 266221, 266241, 266280, C21C 700

Patent

active

040776140

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: 2680493 (1954-06-01), Dorfan
patent: 3459867 (1969-08-01), Estes
patent: 3576318 (1971-04-01), Spencer et al.
patent: 3990686 (1976-11-01), Iguchi et al.

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