Process for producing alloy steel product or iron powder by furn

Details Process for producing alloy steel product or iron powder by furn Process for producing alloy steel product or iron powder by furn

1981-05-07

1983-09-27

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 45, 75 77, 75 53, 206 8, 75 05R, 75 05BA, C21B 1500

Patent

active

044066953

ABSTRACT:
An iron containing 3% to 6% carbon and small quantities of manganese, silicon, sulfur and phosphorus produced by the blast furnace, electric furnace or other well-known furnaces, requires a relatively low temperature to convert to the molten state. This molten iron can be refined on the surface of molten lead at temperatures from 1000.degree. C. to 1525.degree. C. containing on the surface of the molten lead an oxide of lead or oxides of nickel, cobalt, iron, manganese, copper, zinc, and other metals whose oxides are reducible to the elemental state by carbon resulting in a refined or alloyed steel and/or increasing amount of molten lead. The carbon monoxide formed in this reaction may be combined with hydrogen at temperatures of 400.degree. C. to 1000.degree. C. and 100 atmospheres to 150 atmospheres in the presence of a proper catalyst according to the known Fischer-Tropsch reaction to form a petroleum product. Alternatively a finely ground iron containing 3% carbon to 6% carbon can be furnaced at 1000.degree. C. to 1525.degree. C. to produce either iron powder to fabricate powder metallurgy parts or a steel billet to make steels of any shape or form with rolling equipment. Also the carbides of nickel, cobalt and other elements can be converted to the elemental state by reaction with an oxide on the surface of the molten lead.

REFERENCES:
patent: 2089782 (1937-08-01), Carlsson
patent: 3393997 (1968-07-01), Faste
patent: 3558304 (1971-01-01), McIntyre
patent: 3881915 (1975-05-01), Proler
patent: 3929465 (1975-12-01), Proler
patent: 4345990 (1982-08-01), Fahlstrom

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