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Class Information
Number: 75/495
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > At 300 degrees c or greater (e.g., pyrometallurgy, etc.) > Iron(fe) > Reduction to metallic iron(fe) within shaft furnace > Externally supplied gas reductant > Solid iron(fe) produced within shaft furnace > Direct addition of gas containing gaseous oxygen or water to shaft furnace (e.g., continuous hyl process, etc.)
Description: Process wherein a gas containing gaseous Oxygen or Water is added directly to the shaft furnace without being admixed with or reacted with another material before the addition.

Patents under this class:

Patent Number Title Of Patent Date Issued
6395055 Method for the direct reduction of iron oxides May. 28, 2002
6183535 Method for increasing the capacity of a direct reduced iron plant without increasing its reformer capacity Feb. 6, 2001
6162050 Furnace for the direct reduction of iron oxides Dec. 19, 2000
6027545 Method and apparatus for producing direct reduced iron with improved reducing gas utilization Feb. 22, 2000
5858057 Method for producing direct reduced iron with a controlled amount of carbon Jan. 12, 1999
5840097 Method for direct reduction of oxides Nov. 24, 1998
5407460 Method for improving quality of reforming gas used in the direct reduction of metal oxides Apr. 18, 1995
5387274 Process for the production of iron carbide Feb. 7, 1995
5110350 Method of reducing iron ore May. 5, 1992
5078788 Method for the direct reduction of iron Jan. 7, 1992
5069716 Process for the production of liquid steel from iron containing metal oxides Dec. 3, 1991
5064467 Method and apparatus for the direct reduction of iron Nov. 12, 1991
4880458 Start-up method for a direct reduction process without an external reformer Nov. 14, 1989
4702766 Method of increasing carbon content of direct reduced iron and apparatus Oct. 27, 1987
4668284 Method of reducing iron ore May. 26, 1987
4298190 Apparatus for gaseous reduction of metal ores with cooling loop Nov. 3, 1981
4261734 Method of making sponge iron Apr. 14, 1981
4253867 Method of using a methane-containing gas for reducing iron ore Mar. 3, 1981
4179282 Method for the reduction of metal oxides Dec. 18, 1979
4160663 Method for the direct reduction of iron ore Jul. 10, 1979
4150972 Controlling carburization in the reduction of iron ore to sponge iron Apr. 24, 1979
4029496 Process for the reduction of iron mineral Jun. 14, 1977
3985548 Direct metal reduction from coal Oct. 12, 1976

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