Method for melting scrap in electric arc furnaces

Details Method for melting scrap in electric arc furnaces Method for melting scrap in electric arc furnaces

1975-04-07

1976-12-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

13 12, C21C 552, H05B 718

Patent

active

039999769

ABSTRACT:
A method is provided for lengthening the life of electric arc furnace linings in the production of steel from scrap, while at the same time introducing sponge iron pellets to shorten the melting time. This is achieved by predetermining the increase in power at the arc-molten bath interface upon introduction of the sponge iron and automatically reducing the power factor in the circuits feeding the electrodes according to the predetermination, upon each introduction of sponge iron.

REFERENCES:
patent: 3536817 (1970-10-01), Carroll
patent: 3565603 (1971-02-01), Klee
patent: 3662075 (1972-05-01), Sakai
patent: 3767831 (1973-10-01), Plockinger
patent: 3857697 (1974-12-01), Antoine

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