Hot discharge direct reduction furnace
AssigneeMidrex Corporation
InventorsDonald Beggs, Robert M. Escott
Life of this patent
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Abstract
A method and apparatus for the continuous direct reduction of metal oxides, ores, etc. to a hot metallized product in solid form. A gas unique seal is employed to prevent the leakage of reduction gas from the bottom of the closed shaft furnace when the product is being discharged which does not affect the discharge temperature of the product.
Claims7
In an apparatus for the direct reduction of metal oxides to a hot metallized product in solid form comprising a generally vertical shaft furnace having product introducing means at the top thereof, particle removal means at the bottom thereof for creating gravitational flow of particulate burden therethrough, intermediate reducing gas introduction means, and upper spent top gas removal means, the improvement comprising:
- a. a seal gas disengaging chamber integrally connected to the discharge outlet of said furnace in direct line of product flow;
- b. a seal gas removal means engaging said seal gas disengaging chamber;
- c. a seal gas introducing means in the lower portion of said furnace, and
- d. means connected to said seal gas removal means and to said seal gas introducing means for cleaning said seal gas and for heating said seal gas to the desired introduction temperature.
Dependencies are inferred from the claim text.