Method of operating a metallurgical plant

Details Method of operating a metallurgical plant Method of operating a metallurgical plant

1984-03-21

1985-03-12

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 12, 75 65EB, C22B 400, C21C 552

Patent

active

045043086

ABSTRACT:
There is disclosed a method of operating a metallurgical plant including a metallurgical vessel through the ceiling of which one or several hollow electrode(s) are guided in whose cavity a supply pipe is liftably and lowerably moveable. The plant may be operated as an electric arc furnace to melt down charge materials and fluxes, by retracting the pipe mouth to behind the mouth of the hollow electrode. Or, it may be operated as a plasma furnace to melt charge materials and fluxes upon increased energy supply, by displacing the mouth of the pipe to or slightly in front of the mouth of the hollow electrode and simultaneously supplying a plasma generating gas. And, finally, it may be operated as a refining converter, by displacing the pipe mouth to beyond the mouth of the hollow electrode and supplying oxygen-containing gas while interrupting the current supply.

REFERENCES:
patent: 3163521 (1964-12-01), Rinesch
patent: 3292662 (1966-12-01), Nishi
patent: 3347766 (1967-10-01), Death
patent: 4148628 (1979-04-01), Fukunishi
patent: 4410358 (1983-10-01), Heshmatpour

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