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Class Information
Number: 75/502
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 in molten state > Gas injection over surface of melt (e.g., as in reverberatory furnace, etc.)
Description: Process wherein gas is passed over the surface of the melt.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7568681 |
Apparatus for injecting gas into a vessel |
Aug. 4, 2009 |
| 7160353 |
Process for producing molten iron |
Jan. 9, 2007 |
| 6989042 |
Direct smelting process and apparatus |
Jan. 24, 2006 |
| 6939391 |
Direct smelting process and apparatus |
Sep. 6, 2005 |
| 6626977 |
Direct smelting process and apparatus |
Sep. 30, 2003 |
| 6547847 |
Continuous process for transforming material, yielding controlled composition products and apparatus apt to carry out such process |
Apr. 15, 2003 |
| 6482249 |
Direct smelting process |
Nov. 19, 2002 |
| 6478848 |
Direct smelting process |
Nov. 12, 2002 |
| 6440195 |
Process and an apparatus for producing metals and metal alloys |
Aug. 27, 2002 |
| 6423115 |
Direct smelting process |
Jul. 23, 2002 |
| 6409790 |
Method and apparatus for practicing carbonaceous-based metallurgy |
Jun. 25, 2002 |
| 6402808 |
Direct smelting process |
Jun. 11, 2002 |
| 6387153 |
Stable idle procedure |
May. 14, 2002 |
| 6379422 |
Direct smelting process |
Apr. 30, 2002 |
| 6379424 |
Direct smelting apparatus and process |
Apr. 30, 2002 |
| 6368548 |
Direct smelting process and apparatus |
Apr. 9, 2002 |
| 6352574 |
Process for direct production of cast iron from fine iron ore and fine coal |
Mar. 5, 2002 |
| 6332910 |
Process for working up steel slags and iron carriers for obtaining pig iron and environmentally safe slags |
Dec. 25, 2001 |
| 6277172 |
Method of charging metal carriers to a melt-down gasifying zone |
Aug. 21, 2001 |
| 6267799 |
Method of producing metals and metal alloys |
Jul. 31, 2001 |
| 6258148 |
Method of charging metal carriers to a melt-down gasifying zone |
Jul. 10, 2001 |
| 6214085 |
Method for direct steelmaking |
Apr. 10, 2001 |
| 6214084 |
Iron manufacturing process |
Apr. 10, 2001 |
| 6197088 |
Producing liquid iron having a low sulfur content |
Mar. 6, 2001 |
| 6193781 |
Method of smelting iron ore |
Feb. 27, 2001 |
| 6171364 |
Method for stable operation of a smelter reactor |
Jan. 9, 2001 |
| 6143054 |
Process of producing molten metals |
Nov. 7, 2000 |
| 6083296 |
Method of producing metals and metal alloys |
Jul. 4, 2000 |
| 6001148 |
Process for obtaining metal from metal oxide |
Dec. 14, 1999 |
| 5989309 |
Method for injecting fine iron ore in smelting reducing process |
Nov. 23, 1999 |
| 5980606 |
Method for reducing sulfuric content in the offgas of an iron smelting process |
Nov. 9, 1999 |
| 5891214 |
Smelting reduction method with increased effectiveness |
Apr. 6, 1999 |
| 5885322 |
Method for reducing iron losses in an iron smelting process |
Mar. 23, 1999 |
| 5830259 |
Preventing skull accumulation on a steelmaking lance |
Nov. 3, 1998 |
| 5800592 |
Process for producing molten pig iron with melting cyclone |
Sep. 1, 1998 |
| 5647888 |
Process for producing metals and metal alloys in a smelt reduction vessel |
Jul. 15, 1997 |
| 5607495 |
Oxygen smelting of copper or nickel sulfides |
Mar. 4, 1997 |
| 5518523 |
Converter process for the production of iron |
May. 21, 1996 |
| 5489325 |
Process for producing metals and metal alloys in a smelt reduction vessel |
Feb. 6, 1996 |
| 5480474 |
Process and apparatus for smelting reduction of ores or pre-reduced metal carriers |
Jan. 2, 1996 |
| 5472478 |
Reduction of metal oxides and vessel |
Dec. 5, 1995 |
| 5466278 |
Process for the manufacture of steel |
Nov. 14, 1995 |
| 5378260 |
Two-zone countercurrent smelter system and process |
Jan. 3, 1995 |
| 5302184 |
Manufacture of ferroalloys using a molten bath reactor |
Apr. 12, 1994 |
| 5286273 |
Method for steel making in high temperature reactor |
Feb. 15, 1994 |
| 5135572 |
Method for in-bath smelting reduction of metals |
Aug. 4, 1992 |
| 5051127 |
Process for post combustion |
Sep. 24, 1991 |
| 5000784 |
Method for smelting reduction of iron ore |
Mar. 19, 1991 |
| 4995906 |
Method for smelting reduction of iron ore |
Feb. 26, 1991 |
| 4985068 |
Method and apparatus for smelting iron oxide |
Jan. 15, 1991 |
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