| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 06/13/2001 | CN1067108C Metal reduction and melting process and preheating equipment |
| 06/13/2001 | CN1067107C Equipment and method for producing sponge iron |
| 06/12/2001 | US6245123 Safe separation of noxious substances and, in particular, the separation of copper prior to the aftertreatment of the slag |
| 06/06/2001 | EP0914475B1 Method of producing liquid pig iron or liquid steel precursors |
| 06/06/2001 | CN1298455A Method for reducing iron oxides and installation therefor |
| 06/05/2001 | US6241804 Reduction of iron oxide to iron using reducing gas |
| 06/05/2001 | US6241803 Heating iron oxide with carbon to form iron and cooling |
| 06/05/2001 | US6241801 Method for treating particulate material in the fluidized bed method and vessel and plant for carrying out the method |
| 05/31/2001 | WO2001038589A1 Method and device for pre-heating and for continuous introduction of a charge for an electric arc furnace |
| 05/31/2001 | WO2001038455A1 Retort |
| 05/31/2001 | WO1999010544A8 Direct iron and steelmaking |
| 05/31/2001 | DE19956578A1 Process for preheating the charge of an electric arc furnace comprises preheating the charge, preferably, hot briquetted iron or direct reduced iron, by flue gas |
| 05/30/2001 | CN1066495C Arrangement in wall and method of coating wall |
| 05/29/2001 | US6238443 Process of agglomerating high carbon dusts and a substantially non-dusting high carbon composition therefrom |
| 05/29/2001 | CA2172898C Apparatus for producing molten pig iron by direct reduction |
| 05/23/2001 | EP0796348B1 Method of directly reducing a particulate iron-containing material, and plant for carrying out the method |
| 05/23/2001 | DE19953298A1 Verfahren und Vorrichtungen zur Leistungssteigerung und Brennstoffeinsparung bei der Erzeugung von Eisen Methods and apparatus to improve performance and fuel saving in the production of iron |
| 05/22/2001 | US6235085 High carbon content briquettes |
| 05/22/2001 | US6235083 Process for production of hot carbon monoxide and hydrogen reducing gas for metal ores in a gasification zone |
| 05/22/2001 | US6235082 Process for producing liquid metal and facilities for carrying out the process |
| 05/22/2001 | US6235081 Using iron ore to form sponge metal by reduction with carbon monoxide and hydrogen |
| 05/22/2001 | US6235080 Charging device for directly charging reduced fine iron ore into melter-gasifier |
| 05/22/2001 | US6235079 Multistage reaction for iron ore |
| 05/22/2001 | US6235075 Method and device for producing silicon-rich foundry iron |
| 05/17/2001 | WO2001034855A2 Method of pyroprocessing mineral ore material such as pellets in a rotary kiln for reducing combustion nox |
| 05/16/2001 | EP1099767A1 Method and device for induction-heating and melting metal oxides-containing powder and granular material |
| 05/16/2001 | EP1098997A1 A direct smelting process |
| 05/16/2001 | EP0865506B1 Process for producing liquid metal and facilities for carrying out the process |
| 05/16/2001 | CN1295134A Direct stainless steel smelting method and smelter by AC plasma melting to reduce concentrated nichromite |
| 05/15/2001 | US6231638 Reduction; injection comminuted plastic material to agglomerate |
| 05/15/2001 | US6230634 Method of blowing synthetic resin into a furnace |
| 05/10/2001 | WO2001032941A1 Fluidized bed breakage prevention system for fluidized bed reduction reactor |
| 05/10/2001 | WO2001032940A1 Method and devices used in the production of iron for increasing output and reducing fuel consumption |
| 05/09/2001 | EP0897429B1 Method and device for direct reduction of ore fines |
| 05/08/2001 | US6228142 In production of molten pig iron utilizing non-coking coal; sensor for measuring distance using a laser, and process computer which obtains changing pressure in a melter gasifier, for maintaining the penetration depth |
| 05/03/2001 | WO2001031070A1 Multiple-level furnace |
| 05/03/2001 | WO2001031069A1 Method for direct reduction of materials containing iron oxide |
| 05/03/2001 | DE19963609C1 Production of pig iron comprises reducing iron ore in a reduction shaft to form sponge iron which has a high degree of metallization |
| 05/03/2001 | CA2388847A1 Process for the direct reduction of iron-oxide-containing material |
| 05/02/2001 | EP1096215A2 Apparatus and method for producing metal through reduction |
| 05/02/2001 | EP1095166A1 Apparatus and process for treating a particulate material within a rotating retort |
| 05/02/2001 | CN1293257A Reducing metal manufacturing equipment and manufacturing method of reducing metal |
| 05/02/2001 | CN1065280C Plant and process for producing sponge iron |
| 05/01/2001 | US6224820 Method of producing a reduced metal, and traveling hearth furnace for producing same |
| 05/01/2001 | US6224819 Fluidized bed type reducing system for reducing fine iron ore |
| 05/01/2001 | US6224650 A high temperature reducing gas from a melter gasifier is used as a calcination heat in a calcination furnace so as to cool high temperature reducing gas to optimum reduction temperature, and supply cooled reduced gas to a shaft furnace |
| 05/01/2001 | US6224649 Contacting iron-oxide particles, including iron ore fines, in a broad range of sizes with a reducing gas containing hydrogen and carbon dioxide in a reduction reactor having atleast one reduction zone, comprises two sub-zones |
| 05/01/2001 | US6224647 Process and device for charging a fusion gasifier with gasifying means and spongy iron |
| 05/01/2001 | US6223552 Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
| 04/25/2001 | EP1000178B1 Method for using coal fines in a melt-down gasifier |
| 04/25/2001 | EP0783591B1 Process for producing liquid pig iron or semi-finished steel products and installation for implementing it |
| 04/25/2001 | CN1292830A Method for producing liquid pig iron and/or steel blanks |
| 04/24/2001 | US6221312 Refractory wall, metallurgical vessel comprising such a refractory wall and method in which such a refractory wall is applied |
| 04/24/2001 | US6221127 Receiving mineral ore at infeed end of rotary kiln; positioning burner near discharge end of rotary kiln; operating burner to achieve oxidation and induration of mineral induration of mineral ore; injecting oxidizer gas |
| 04/24/2001 | US6221126 Arrangement and process for the reduction of metal-oxide-bearing material |
| 04/24/2001 | US6221124 Fluidized bed treatment of EAF dust |
| 04/24/2001 | US6221123 Feeding metal into top portion of shaft furnace to form column of metal within shaft furnace; preheating metal in bottom of metal column; contacting preheated metal with molten pool of metal ininduction furnace to melt |
| 04/24/2001 | CA2200961C Process and apparatus for the manufacture of steel from iron carbide |
| 04/19/2001 | WO2001027338A1 Method and device for enclosing an electric arc |
| 04/19/2001 | WO2001027336A1 Direct reduction device to obtain metal iron with a high content of carbon in the form of carbide |
| 04/19/2001 | CA2387468A1 Method and device for enclosing an electric arc |
| 04/18/2001 | CN1064713C Gasification process and plant for direct reduction reactors |
| 04/17/2001 | CA2052659C Process for the production of pig iron and sponge iron |
| 04/15/2001 | CA2322935A1 Method and apparatus for producing reduced metal |
| 04/12/2001 | WO2001025495A1 Method for pyrometallurgical treatment of waste from iron and steel production |
| 04/12/2001 | WO2001025494A1 Rotary cooler for iron carbide production |
| 04/11/2001 | CN1064409C Method for injecting synthetic resin into furnace and apparatus therefor |
| 04/10/2001 | US6214087 Producing solid metal product by treating carbon containing metal bearing compounds in compacts or agglomerates with coatings of treatment material before feeding compacts to furnace |
| 04/10/2001 | US6214086 For simultaneously supplying hot and cold direct reduced iron (dri); system uses gravity to transport hot dri from a reduction furnace to a discharge section, which transports desired amounts to a cooling receptacle and a hot dri vessel |
| 04/10/2001 | US6214085 From ore and non-coking coal to which flux material is added; reducing ore with coal in a sealed chamber under pressure to make a fluxed iron/carbon product, after crushing oxymelting to make steel, carbon monoxide and slag |
| 04/10/2001 | US6214084 Iron manufacturing process |
| 04/10/2001 | US6214083 Method and plant for producing iron from lumpy and fine-particulate sponge iron |
| 04/10/2001 | US6214082 Process for the reduction of metal-oxide-bearing material |
| 04/10/2001 | US6213762 Shaft furnace |
| 04/05/2001 | WO2000050969A3 Mass generation of individual virtual servers, virtual web sites and virtual web objects |
| 04/05/2001 | DE19946430A1 Verfahren zur Verwertung von Eisen, Zink und Blei enthaltenden Sekundärrohstoffen Process for the recovery of iron, zinc and lead-containing secondary raw materials |
| 04/04/2001 | EP1088904A1 Method of treating iron, zinc and lead bearing secondary materials such as steelmaking furnace dusts |
| 04/04/2001 | EP1088111A1 Continous metal melting process and apparatus |
| 04/04/2001 | EP1088046A1 Carbon pellets |
| 04/04/2001 | CN1064084C Method and apparatus for producing reductive gases for reducing metal ores |
| 04/03/2001 | US6210631 Reduction vessel for the reduction of metal-oxide-bearing material |
| 04/03/2001 | US6210627 Arrangement for the dosed introduction of fine-particulate material into a reactor vessel |
| 04/03/2001 | US6210462 Method and apparatus for making metallic iron |
| 04/03/2001 | US6210155 Charging device for a rotary hearth furnace |
| 03/28/2001 | EP1087023A1 Rotary hearth furnace and method of reducing metal oxide in a rotary hearth furnace |
| 03/28/2001 | EP1087022A1 A direct smelting process |
| 03/28/2001 | CN1288961A Apparatus for producing red reduced iron and blank-block drying method used for same |
| 03/28/2001 | CA2321311A1 Method of utilizing secondary raw materials containing iron, zinc and lead |
| 03/27/2001 | US6206948 Metal reduction and melting process and apparatus |
| 03/24/2001 | CA2320013A1 Improved rotary hearth furnace |
| 03/21/2001 | CN1288485A Method for reducing iron oxides and installation therefor |
| 03/21/2001 | CN1288066A Method and equipment for prodn. of reduction iron |
| 03/21/2001 | CN1288065A Pressure control |
| 03/20/2001 | US6203848 Method for increasing the charring ratio of coal |
| 03/20/2001 | US6202576 Process for recycling fine-particle solids discharged from a reactor vessel with a gas |
| 03/15/2001 | WO2001018260A1 Furnace for the direct reduction of iron oxides |
| 03/15/2001 | WO2001018259A1 Furnace for the direct reduction of iron oxides |
| 03/15/2001 | WO2001018258A1 Device for the direct reduction of iron oxides |
| 03/15/2001 | WO2001018257A1 Furnace for the direct reduction of iron oxides |
| 03/15/2001 | WO2001018256A1 Method and facilities for metal smelting |