Process for recovering metals from iron oxide bearing masses

Details Process for recovering metals from iron oxide bearing masses Process for recovering metals from iron oxide bearing masses

1995-05-03

1998-03-17

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 1022, 75 103, 75 1031, 75961, 423107, 423DIG10, C21B 1110, C01G 903

Patent

active

057281939

ABSTRACT:
A process for recovering iron from an iron oxide bearing mass. The process includes forming a bed of lump coke in a vertical shaft furnace, feeding the iron oxide bearing mass and scrap metal onto the bed of lump coke and combusting the coke in the coke bed while injecting a plasma gas having a temperature greater than about 5,000.degree. F. into the coke bed to form a reaction zone within the coke bed having a temperature in excess of 4,000.degree. F. The iron oxide bearing mass and scrap metal fed onto the bed of lump coke is melted to form a molten phase containing molten iron oxide and molten scrap metal. The molten phase flows into the reaction zone and a film is formed on the lump coke within the reaction zone, the iron oxide in the film being reduced by carbon from the coke to form molten iron in a solid/liquid reduction. The molten iron is discharged from the furnace.

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