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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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