Back to results
US 5,401,295 AGranted
Smelting reduction method with high productivity
AssigneeTechnological Resources Pty. Limited
InventorKarl Brotzmann
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for smelting reduction of metal ores involving a combination process wherein the metal ores are partly reduced in one or more stages and then completely reduced to metal in a melt-down reactor. The combination process comprises at least three process units, and the melt-down reactor forms one process unit. The partial reduction of the metal ores is performed in at least two further process units. A different waste gas is produced in each of these at least three process units.
Claims16
A method for smelting reduction of metal ore comprising:
- an initial reduction step in which a metal ore composition is reduced in an initial reduction process unit;
- a partial reduction step in which the metal ore composition is further reduced in a partial reduction process unit;
- feeding the further reduced metal ore composition from the partial reduction process unit to a melt-down reactor;
- and then completely reducing the metal ore composition to metal in said melt-down reactor, a different waste gas being produced in each of the initial reduction process unit, the partial reduction process unit and the melt-down reactor, the waste gas from the melt-down reactor being passed into the initial reduction process unit, where said waste gas from the melt-down reactor is fully burned and then removed from the combination process.
1 more element
Dependencies are inferred from the claim text.