Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1974-05-14
1976-04-06
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 44S, 75 65R, 266 33S, C21C 552, C21B 1100
Patent
active
039486427
ABSTRACT:
Particulate material such as scrap, sponge iron, prereduced pellets and the like is introduced into the top of a vertically arranged melting chamber and forms a column in the latter. The material is melted by directing a flame or an electric arc against the lower end of the column and the melt thus formed collects at the bottom of the chamber. As melting continues, fresh particulate material travels downwardly through the melting chamber to become exposed to the action of the flame or arc. A projection is provided at the bottom of the melting chamber and has an upper surface which is located above the level of the melt. The flame or arc is so adjusted that a portion of the lower end of the column bears against the upper surface of the projection. In this manner, the column is supported in the chamber without contacting the melt so that excessive loss of heat from the melt is prevented. If the flame or arc is annular, then the center of the lower end of the column will bear against the projection which latter will, in this case, be located in the center of the chamber. If the flame or arc is plate-shaped and is directed against the center of the lower end of the column, then the edge of the lower end of the column will bear against the projection which latter will, in this case, be located at the periphery of the chamber.
REFERENCES:
patent: 2624565 (1953-01-01), Kompart
patent: 2804295 (1957-08-01), Brooke
patent: 3353807 (1967-01-01), Sixel
patent: 3447420 (1969-06-01), Bartu
patent: 3615353 (1971-10-01), Mahoney
patent: 3669434 (1972-06-01), Geck
patent: 3788837 (1974-01-01), Geck
Klockner-Werke AG
Rosenberg Peter D.
Striker Michael J.
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