Arc furnace steelmaking

Details Arc furnace steelmaking Arc furnace steelmaking

1975-07-07

1977-03-01

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 12, C21C 552

Patent

active

040100260

ABSTRACT:
This invention relates to a method of steelmaking in which a blend of particulate high carbon and low carbon iron-bearing material is continuously charged into an arc furnace at a rate dependent on the electrical and chemical energy reactions therein. The high carbon particulate material may be blast furnace iron in either granulated or `pigged` form; the low carbon material may be directly reduced iron pellets or fragmented scrap -- alternatively iron ore may be used.
The steelmaking technique employed may be a batch process where a cycle is completed on tapping after continuous charging of the blend has been effected following melt-down of an initial scrap basket charge. Alternatively, a `hot heel` technique may be employed where a residue of molten metal is left in the furnace after tapping so that continuous charging commences immediately after each tapping sub-cycle. Typically three of five such sub-cycles may complete a main cycle.

REFERENCES:
patent: 3276859 (1966-10-01), Collin

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