| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 10/20/2005 | US20050229748 Moving separate or separable containers containing a mixture of iron oxide and carbonaceous material through the furnace zone to the discharge end; preheating; reducing; melting and fusing iron and slag formed; discharging from containers, and returning empty containers to the charging end of the furnace |
| 10/20/2005 | US20050229743 Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals |
| 10/19/2005 | EP1114192B1 A process and an apparatus for producing metals and metal alloys |
| 10/12/2005 | CN1222627C A direct smelting process and apparatus |
| 10/12/2005 | CN1222625C Method for using low temperature rectification combination blast furnace and direct reduction reactor |
| 10/06/2005 | DE10049959B4 Elektroofen für die Stahlherstellung Electric furnace for steel production |
| 10/05/2005 | CN1221669C Method for prodn. of reduction iron |
| 10/05/2005 | CN1221668C Direct smelting process and apparatus |
| 09/29/2005 | WO2005090711A1 Method of building a direct smelting plant |
| 09/29/2005 | WO2005090613A1 Direct smelting plant |
| 09/29/2005 | CA2558967A1 Direct smelting plant |
| 09/14/2005 | EP1098997B1 A direct smelting process |
| 09/14/2005 | CN1219078C Coal base hot-air rotary hearth furnace melting reduction iron-smelting method |
| 09/09/2005 | WO2005083130A1 Direct smelting plant and process |
| 09/06/2005 | US6939391 Forming bath of molten metal and molten slag in metallurgical vessel; injecting ferrous feed and smelting ferrous feed to metal; injecting solid carbonaceous material; generating a gas flow; injecting preheated air such that it impinges |
| 09/01/2005 | WO2005080608A1 Direct smelting plant and process |
| 08/31/2005 | CN1217015C Stable furnace shutting down process |
| 08/31/2005 | CN1217014C Direct smelting process |
| 08/31/2005 | CN1217013C Direct smelting process and apparatus |
| 08/25/2005 | WO2005078146A1 A zinc refining process with oxygen-enriched and the enclosed smelting furnace thereof |
| 08/24/2005 | CN1216156C Method and device for producing molten iron |
| 08/17/2005 | CN1654685A Method for extracting pig iron by using dust of iron powder plant |
| 07/28/2005 | US20050161868 Vertical shaft melting furnace |
| 07/27/2005 | CN1644720A Oxygen-enriched zinc smelting method |
| 07/21/2005 | DE10249235B4 Verfahren zum Betreiben eines Schachtofens A method for operating a shaft furnace |
| 07/21/2005 | DE10207202B4 Verfahren zur metallurgischen Verwertung von metallhaltigen Schlämmen und Stäuben A method for metallurgical recovery of metal-containing dusts and sludges |
| 07/20/2005 | EP1034311B1 Direct smelting process for producing metals from metal oxides |
| 07/13/2005 | EP1551939A1 Apparatus and process for the treatment of a material under pyrolytical conditions, and use thereof |
| 06/29/2005 | EP1163375B1 Fluidized bed reduction reactor for reducing fine iron ore and supplying the reduced ore to a melter-gasifier |
| 06/29/2005 | CN1208476C Method and device for producing fixed bed |
| 06/29/2005 | CN1208475C Direct smelting process |
| 06/23/2005 | WO2005017233A3 Insulated cold hearth for refinning metals having improved thermal efficiency |
| 06/22/2005 | CN1207400C Direct smelting process and container therefor |
| 06/16/2005 | US20050126343 Blast furnaces ; mixing iron ore, flux and water; controlling particle size distribution; pressing |
| 06/15/2005 | CN1206372C Method for producing pig iron |
| 06/08/2005 | EP1320633A4 A direct smelting process and apparatus |
| 06/08/2005 | CN1623896A CO generator |
| 06/02/2005 | DE10064048B4 Schlackenstopper Slag stopper |
| 06/01/2005 | CN1621537A Metallurgical reactor for the production of cast iron |
| 05/25/2005 | CN1203190C Method and device for prdoucing pig iron or liquid steel intermediate from charge materials containing iron ore |
| 05/18/2005 | EP1383933B1 Method for producing a melt iron in an electric furnace |
| 05/18/2005 | CN2700333Y Gas fired iron smelting furnace |
| 05/12/2005 | US20050100496 CO generator |
| 05/10/2005 | CA2315570C Gas blowing plug and manufacturing method therefor |
| 05/04/2005 | EP1112387B1 Direct smelting vessel and direct smelting process |
| 04/27/2005 | EP1137815B1 A process and an apparatus for producing metals and metal alloys |
| 04/21/2005 | WO2005035796A1 Reactor for producing iron and the alloys thereof |
| 04/20/2005 | CN1197982C Pressure control |
| 04/20/2005 | CN1197981C Method for smelting melted iron with iron-bearing waste cooled agglomerated pellet |
| 04/12/2005 | CA2358425C Fluidized bed breakage prevention system for fluidized bed reduction reactor |
| 03/30/2005 | CN1602363A Method for producing titanium oxide containing slag |
| 03/30/2005 | CN1195077C Rotary Hearth furnace and method for producing reduced metal |
| 03/29/2005 | US6872344 Gas blowing plug and manufacturing method therefor |
| 03/10/2005 | WO2005022062A1 Electric reducing furnace |
| 03/10/2005 | US20050050996 Blast furnaces; mixing iron ore, flux and water; controlling particle size; pressing |
| 03/02/2005 | EP1325159A4 A direct smelting process and apparatus |
| 02/24/2005 | WO2005017233A2 Insulated cold hearth for refinning metals having improved thermal efficiency |
| 02/22/2005 | US6858061 Method and device for producing pig iron or liquid steel pre-products from charge materials containing iron ore |
| 02/17/2005 | DE10335847A1 Electric arc reduction furnace for reducing slag in the recovery of metallic components comprises a charging opening for charging material which simultaneously acts as an exhaust gas line opening for the gas produced |
| 02/10/2005 | US20050028643 Heating with reducing agents to reduce iron oxide to iron |
| 02/01/2005 | CA2307090C Structure of metallurgical furnace and operating method using the same metallurgical furnace |
| 01/26/2005 | CN1570153A One and half step melting deacidizing iron-smelting method |
| 01/12/2005 | CN1564874A Iron ore briquetting |
| 01/05/2005 | CN1561400A Iron ore briquetting |
| 12/29/2004 | CN1182259C Method for producing melt iron |
| 12/16/2004 | US20040253175 Electrostatically enhanced tribochemical methods and apparatus |
| 11/25/2004 | WO2004101828A1 Method for utilizing slag |
| 11/25/2004 | CA2525926A1 Process for the utilization of slag |
| 11/18/2004 | US20040227279 Metallurgical reactor for the production of cast iron |
| 11/17/2004 | EP1477573A1 Metallurgical reactor for the production of cast iron |
| 11/17/2004 | EP1276912A4 A direct smelting process and apparatus |
| 11/10/2004 | CN1545562A Reduction smelting method in a shaft furnace with recovery of volatile secondary metals |
| 11/04/2004 | US20040216560 Method and device for producing pig iron or liquid steel pre-products from charge materials containing iron ore |
| 10/13/2004 | CN2648560Y Water-cooled electric cable rubber tube apparatus |
| 09/30/2004 | WO2004018717A9 Electrostatically enhanced tribochemical methods and apparatus |
| 09/22/2004 | CN1167930C Equipment for jetting granular material into container |
| 09/15/2004 | EP1351891B1 Method for utilising a waste slurry from silicon wafer production |
| 09/09/2004 | US20040173054 Method of manufacturing metal iron |
| 08/19/2004 | WO2004070301A1 Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure |
| 08/19/2004 | DE29825067U1 Schachtofen mit Injektordüse Shaft furnace with injector |
| 08/18/2004 | EP1425427A4 Iron ore briquetting |
| 08/18/2004 | EP1423545A4 Iron ore briquetting |
| 08/12/2004 | WO2004018717A3 Electrostatically enhanced tribochemical methods and apparatus |
| 08/05/2004 | WO2004065641A1 An improved smelting process for the production of iron |
| 07/28/2004 | CN1516743A Method of mfg. metal iron |
| 07/27/2004 | US6767383 Method for producing pig iron |
| 07/14/2004 | EP1437420A1 Method for producing titanium oxide containing slag |
| 07/13/2004 | CA2276172C Production method of metallic iron |
| 06/30/2004 | CN1509339A Apparatus and method for recycling iron laden dust and sludge in ingot iron manufacturing process using semi-soft coking coal and fine iron ore |
| 06/30/2004 | CN1155534C Method of utilizing dusts produced during the reduction of iron ore |
| 06/29/2004 | CA2304618C Direct smelting process for producing metals from metal oxides |
| 06/23/2004 | EP1292713A4 Direct smelting process and apparatus |
| 06/23/2004 | EP1287170A4 Apparatus for injecting solid particulate material into a vessel |
| 06/23/2004 | EP1230403A4 A direct smelting process |
| 06/23/2004 | EP1137815A4 A process and an apparatus for producing metals and metal alloys |
| 06/22/2004 | CA2295350C Method for manufacturing reduced iron agglomerates and apparatus therefor |
| 06/17/2004 | WO2004050921A1 Process for producing molten iron |
| 06/09/2004 | EP1425427A1 Iron ore briquetting |
| 06/09/2004 | CN1502705A Method for self-heatnig fusion reduction of carbon containing pellet |
| 06/02/2004 | EP1423545A1 Iron ore briquetting |