Reduction of iron ores by hydrocarbons

Details Reduction of iron ores by hydrocarbons Reduction of iron ores by hydrocarbons

1983-10-27

1984-11-27

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 35, 75 40, C21B 1308

Patent

active

044849443

ABSTRACT:
The iron ores hematite, magnetite, limonite and siderite are reduced to iron by chemical reactions of the oxides in the ores with hydrocarbon gases in the absence of oxygen and oxygen compounds except carbon dioxide, in the input to the reaction chamber, other than the iron oxides. With certain ores and hydrocarbons the reactions are exothermic; other reactants require added heat. This method achieves the results of blast furnace techniques with more efficient utilization of fuel, lower cost fuel, lower cost of labor, an improved method of removing silica from the iron ores, and the use of readily available hydrocarbons in place of metallurgical coke which is often scarce.

REFERENCES:
patent: 1167016 (1916-01-01), Pratt
patent: 1422733 (1922-07-01), Bradley
patent: 2988442 (1961-06-01), Tanner
patent: 2991172 (1961-07-01), Hahn
patent: 3282677 (1966-11-01), Futakuchi et al.

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