| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 03/15/2001 | CA2383860A1 Method and facilities for metal smelting |
| 03/14/2001 | CN1287609A Method for forming a moving hearth in a furnace for producing reduced iron agglomerates |
| 03/14/2001 | CN1287179A Equipment for producing reduced iron |
| 03/13/2001 | US6200522 Method and apparatus for smelting iron ore |
| 03/13/2001 | US6200518 Melt-reducing facility and method of operation thereof |
| 03/13/2001 | US6200363 Direct reduced iron hot/cold discharge system |
| 03/13/2001 | CA2205047C Method for coking coal |
| 03/07/2001 | EP1081236A1 Method and apparatus for supplying granular raw material for reduced iron |
| 03/07/2001 | EP1080235A1 Method for reducing metal oxides and device for implementing said method |
| 03/07/2001 | EP0877822B1 Process for producing liquid pig iron or semifinished steel products from ore |
| 03/07/2001 | CN1286311A Method and apparatus for supply of granular reduced iron feedstock |
| 03/07/2001 | CN1062912C Apparatus and method for burning and melting fine particles contg. carbon |
| 03/07/2001 | CN1062911C Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using said apparatus |
| 03/06/2001 | US6197088 Introducing iron oxide and carbonaceous fuel containing sulfur into fusion zone of smelting process; injecting oxygen source into fusion zone to partially combust carbonaceous fuel; forming high sulfur content liquid iron; saturating |
| 03/06/2001 | US6197087 Pyrolysis of halogenated organic hazardous wastes with direct reduction of iron oxides |
| 03/01/2001 | WO2001014599A1 Method for operating a melt-down gasifier |
| 03/01/2001 | WO2001014598A1 Direct reduced iron discharge system |
| 02/28/2001 | CN1285880A Method for producing hot metal |
| 02/28/2001 | CN1285313A Equipment for producing triferric carbide |
| 02/28/2001 | CA2540914A1 Method and apparatus for supplying granular raw material for reduced iron |
| 02/27/2001 | US6193781 Introducing iron oxide into char and carbon, partially oxidizing the hydrocarbons to produce char and fuel gas of carbon monoxide, carbon dioxide, hydrocarbons and steam |
| 02/21/2001 | EP0871783B1 Process for producing sponge iron |
| 02/21/2001 | CN1285004A Method for producing directly reduced iron in layered furnace |
| 02/15/2001 | WO2001011091A1 A direct smelting process |
| 02/14/2001 | EP1076102A2 Pressure control in direct melting process |
| 02/14/2001 | CN1061945C Method for producing iron carbide |
| 02/13/2001 | US6187076 Powder raw material forms fluidized bed with, and is sequentially reduced by reducing gas while being moved between plurality of fluidized bed chambers |
| 02/13/2001 | CA2044638C Prereduction furnace of a smelting reduction facility of iron ore |
| 02/08/2001 | WO2001009394A1 Metal oxide reduction method and device therefor |
| 02/08/2001 | WO2001009393A1 Method for removing fine-particled material from a fluidised bed |
| 02/08/2001 | WO2000050649A3 Method and apparatus for removing undesirable metals from iron-containing materials |
| 02/08/2001 | CA2379267A1 Metal oxide reduction method and device therefor |
| 02/07/2001 | EP1073772A1 Method and apparatus for producing direct reduced iron with improved reducing gas utilization |
| 02/07/2001 | CN1283222A Refining method of molten iron and reduction smelting method for producing molten iron |
| 02/07/2001 | CN1061690C Method and apparatus for producing preproduct of pig iron melt or liquid steel |
| 02/07/2001 | CN1061689C Melting gasifier for producing metal melt |
| 02/07/2001 | CN1061688C Method and apparatus for adding metal carrier to melting gasification zone |
| 02/06/2001 | US6183535 Method for increasing the capacity of a direct reduced iron plant without increasing its reformer capacity |
| 02/06/2001 | US6183534 Fluidized bed reactor |
| 02/01/2001 | WO2001007670A1 Method for the preparation of fine grain ores |
| 02/01/2001 | CA2378956A1 Method for the preparation of fine grain ores |
| 01/31/2001 | EP1072855A1 Multichamber division type fluidized bed furnace |
| 01/31/2001 | EP0766750B1 Process and plant for recycling iron-containing residues from the steel and iron industry |
| 01/31/2001 | CN1061380C Method and apparatus for producing synthetic blast-furnace slag and pig-iron alloys |
| 01/30/2001 | US6179896 Reduction, melting, gasification |
| 01/25/2001 | WO2001006021A1 Melting plant with burner heated furnace vessel and charge preheater |
| 01/25/2001 | DE19800418C2 Verfahren zur Erzeugung von Roheisen A process for the production of pig iron |
| 01/24/2001 | CN1061099C Method for operating shaft furnace |
| 01/23/2001 | CA2146732C Process for producing an iron melt |
| 01/17/2001 | CN1280628A Method for reducing iron oxides and smelting iron and installations thereof |
| 01/17/2001 | CN1280200A Complex production of rotary film electromagnetic separator for tunnel double body native style blast furnace and tunnel spiral flow magnetic blast furnace |
| 01/17/2001 | CN1280199A Start method for directly smelting technology |
| 01/17/2001 | CN1280197A Blowing method for blowing synthetic resin into furnace |
| 01/17/2001 | CN1060818C Process for producing hydraulic binder rough steel, metal and/or alloy, e.g. ferrochromium or ferrovanadium |
| 01/17/2001 | CN1060813C Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 01/17/2001 | CN1060812C Method for injecting fine iron ore in smelting reducing process |
| 01/16/2001 | US6174346 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 01/10/2001 | EP1067201A2 Start-up procedure for direct smelting process |
| 01/10/2001 | CN1279726A Smelting furnace |
| 01/09/2001 | US6171365 Charging substances comprising iron ore and fluxes, reducing the charging substances to sponge iron in at least one first reduction zone, melting the sponge iron in a melt-down gasifying zone under oxygen and carbon, scrubbing |
| 01/09/2001 | US6171364 Method for stable operation of a smelter reactor |
| 01/03/2001 | CN1278871A Direct-reduction method for production of iron, molten, cast iron and steel |
| 01/03/2001 | CN1278870A Device for withdrawing lumpy material |
| 01/03/2001 | CN1278869A Direct smelting process for producing metals from metal oxides |
| 01/02/2001 | CA2186679C The use of nitrogen from an air separation plant in carbon dioxide removal from a feed gas to a further process |
| 12/28/2000 | WO2000079013A1 2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatus |
| 12/28/2000 | WO2000079012A1 Method for producing melt iron |
| 12/27/2000 | EP1062369A1 Method for producing liquid pig iron and/or steel blanks |
| 12/27/2000 | CN1278305A Withdrawal device for shaft furnace |
| 12/27/2000 | CN1278011A Direct smelting furnace |
| 12/27/2000 | CN1278010A Direct smelting method and equipment |
| 12/27/2000 | CN1059930C Method for treating particle material using fluidized bed, and equipment therefor |
| 12/26/2000 | US6165250 Process for the direct reduction of iron oxides |
| 12/26/2000 | US6165249 Iron carbide process |
| 12/26/2000 | US6164891 Feeding and distributing device for rotary platforms, particularly for rotary-hearth furnaces |
| 12/21/2000 | WO2000076698A1 Metallic articles formed by reduction of nonmetallic articles and method of producing metallic articles |
| 12/20/2000 | EP1060274A1 Method for reducing iron oxides and installation therefor |
| 12/20/2000 | EP1060273A1 Complex fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 12/20/2000 | CN1277265A Parallel straight-bottom furnace using for reduction metallic oxide |
| 12/20/2000 | CN1059707C Steel-making method and plant |
| 12/19/2000 | US6162274 Steel production method |
| 12/19/2000 | US6162050 Furnace for the direct reduction of iron oxides |
| 12/13/2000 | EP1059501A2 Direct smelting vessel |
| 12/13/2000 | CN1276861A Multichamber division type fluidized bed furnace |
| 12/13/2000 | CN1276838A Method and apparatus for making metallic iron |
| 12/12/2000 | US6159268 Process for pyrometallurgical processing in a furnace chamber, of metal-containing waste |
| 12/07/2000 | WO2000073515A1 Method for producing liquid metal from pre-reduced particles and smelting device coupled to a heat treatment furnace by a particle transfer device |
| 12/06/2000 | EP0815265B1 Process for reducing ore fines and arrangement for carrying out the process |
| 12/06/2000 | CN1276018A Method and apapratus for controlling direct carburization |
| 12/06/2000 | CN1275624A Apparatus and process for producing sponge iron by using coal gas-making shaft furnace to reduce iron ore |
| 12/06/2000 | CN1059240C Duplex procedure for prodn. of metals and metal alloys from oxidic metal ores |
| 12/05/2000 | US6156262 At least one gas discharge duct for reducing gas generated in the melter gasifier departs from the melter gasifier and the melter gasifier is provided with a tap for the metal melt and for slag. |
| 11/29/2000 | EP1055006A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 11/29/2000 | CN1275193A Method for operating moving hearth reducing furnace |
| 11/28/2000 | US6152984 Integrated direct reduction iron system |
| 11/28/2000 | US6152983 Method of producing reduced iron pellets formed by reducing iron oxide pellets containing dusts (including sludges) containing zn ingredients formed in iron works |
| 11/28/2000 | US6152729 Spray cooled furnace discharge assembly |
| 11/23/2000 | WO2000070101A1 Method and installation with smelting and reduction cyclone and a coupled lower furnace for utilising residual material containing iron and heavy metals and optionally iron ore |
| 11/23/2000 | CA2372809A1 Method and installation with smelting and reduction cyclone and a coupled lower furnace for utilising residual material containing iron and heavy metals and optionally iron ore |
| 11/22/2000 | EP1053443A1 Method for forming a moving hearth in a furnace for producing reduced iron agglomerates |