In situ furnace metal desulfurization/nodularization by high pur

Details In situ furnace metal desulfurization/nodularization by high pur In situ furnace metal desulfurization/nodularization by high pur

1978-09-18

1980-05-27

Dixon, Jr., William R.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

75130B, 75130R, 266160, 75 53, 75 93G, 428222, 428371, 428377, C21C 102, C22C 3310, C21C 702, D02G 300

Patent

active

042046661

ABSTRACT:
A method of desulfurizing iron in an induction furnace is disclosed. High purity magnesium, carried in a lance controlled cartridge, is plunged into the lower zone of a molten metal pool of an induction furnace; the cartridge is held submerged for a period of 30-200 seconds. The molten metal column above the submerged cartridge must be at least 2.5 feet, preferably 6-7 feet. The molten metal temperature at the time of cartridge plunging is limited to 2400.degree. F. or less. Magnesium recovery will be at least 70%, which is better than other prior art methods by a factor of 1.4.

REFERENCES:
patent: 2776206 (1957-01-01), Klingbeil
patent: 2872179 (1959-02-01), Fisher
patent: 3598575 (1971-08-01), Jarysta
patent: 3801303 (1974-04-01), Kotler et al.
patent: 3854939 (1974-12-01), Mezoff
patent: 3953198 (1976-04-01), Easwaran et al.

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