| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 03/31/2010 | CN101688261A Improvements in the production of ferro-alloys |
| 03/31/2010 | CN101688259A Process and apparatus for producing iron sponge |
| 03/31/2010 | CN101688258A Method and device for preparing a reducing agent for use in a metal making process, metal making process and metal making apparatus using said device |
| 03/31/2010 | CN101684507A Direct steel making technique by reducing iron ore with gas |
| 03/25/2010 | WO2010031116A1 A material supply apparatus and process |
| 03/25/2010 | US20100074805 Fluidized bed method for the heat treatment of solids containing titanium |
| 03/25/2010 | CA2737313A1 A material supply apparatus and process |
| 03/24/2010 | CN101680044A Reduction treatment apparatus and method of reduction treatment |
| 03/24/2010 | CN101679888A Method and device for the treatment of product gas produced by pressure gasification of solid fuels |
| 03/24/2010 | CN100595290C Technique for smelting nickel-cobalt-ferrum by nickel oxide ore through electrical furnace |
| 03/24/2010 | CN100595289C Fast sponge-iron reduction |
| 03/24/2010 | CN100595287C Metallurgical reactor for the production of cast iron |
| 03/18/2010 | WO2010028932A1 Process for producing agglomerates of finely particulate iron carriers |
| 03/18/2010 | WO2010028459A1 Direct reduction |
| 03/18/2010 | CA2736535A1 Process for producing agglomerates of finely particulate iron carriers |
| 03/17/2010 | CN101671752A Method for producing directly reduced pellets by adding pore-forming agent and organic binder |
| 03/16/2010 | CA2422905C A direct smelting process and apparatus |
| 03/10/2010 | CN101665850A Device for heating and smelting sponge iron, separating iron slag and refining molten steel |
| 03/10/2010 | CN101665849A Continuous steel making process for iron ore |
| 03/10/2010 | CN101665848A Direct steel making process for iron ore |
| 03/09/2010 | US7674317 Inserting the tires at a slower rate into an electric arc furnace and separate from the scrap steel, as compared to batch feeding them or feeding them as tires and scrap steel bundles, so that larger quantities of tires at a specific controlled location and time may be used |
| 03/09/2010 | US7674316 Method for producing metallic iron |
| 03/09/2010 | US7674314 Process for producing reduced metal and agglomerate with carbonaceous material incorporated therein |
| 03/04/2010 | WO2010022473A1 Production of ferro-alloys |
| 03/04/2010 | US20100057068 Gold nanostructure and methods of making and using the same |
| 03/04/2010 | CA2735470A1 Production of ferro-alloys |
| 03/03/2010 | CN101660017A Process for refining molten iron by directly using low-grade iron ores |
| 02/25/2010 | WO2010020655A1 Improved process for production of elemental iron |
| 02/25/2010 | US20100044935 Direct smelting vessel and cooler therefor |
| 02/25/2010 | US20100044933 Method and plant for the heat treatment of solids containing iron oxide |
| 02/24/2010 | EP2155914A1 Improvements in the production of ferro-alloys |
| 02/24/2010 | CN201413032Y Novel direct-reduction rotary hearth furnace |
| 02/23/2010 | CA2341898C A direct smelting process |
| 02/18/2010 | US20100037728 Method for reducing chromium containing raw material |
| 02/17/2010 | CN201407908Y Maintenance cart for sponge iron screw feeder of melting reduction furnace |
| 02/17/2010 | CN201407907Y Positioning device for maintenance of Y-type blanking tube blind plate of melting reduction furnace |
| 02/16/2010 | US7662335 Metal scrap submergence apparatus |
| 02/16/2010 | CA2574957C Apparatus for manufacturing molten iron by injecting fine coals into a melter-gasifier and the method using the same |
| 02/11/2010 | WO2010015041A1 Recarburisation method |
| 02/11/2010 | US20100031778 Multiple hearth furnace for reducing iron oxide |
| 02/11/2010 | US20100031776 System and method of producing metallic iron |
| 02/11/2010 | CA2733085A1 Recarburisation method |
| 02/10/2010 | CN101643810A Technology for producing sponge iron and high purity CO gas |
| 02/10/2010 | CN101643809A Sponge iron production technology by coal gasification |
| 02/10/2010 | CN101643808A Method for heating reducing gas in direct reduced iron by utilizing garbage-produced gas |
| 02/03/2010 | EP2148913A2 Method and device for the treatment of product gas produced by pressure gasification of solid fuels |
| 02/03/2010 | CN101638703A Method for directly reducing nickel containing pig iron by lateritic nickel in tunnel kiln |
| 02/03/2010 | CN101638702A Recycling method of outlet gas in direct reduction process using gas as reducing gas |
| 02/03/2010 | CN100587080C Direct reduction device and method |
| 02/02/2010 | US7655181 Screw conveyor of rotary hearth furnace for discharging reduced iron |
| 01/27/2010 | CN101636510A Method and device for producing molten material |
| 01/27/2010 | CN101633969A Reduction reaction equipment for reducing loose iron ore material |
| 01/26/2010 | US7651547 Heating ilmenite to 700-950 degrees C. in the bed; gas flow from below through a tube into a mixing chamber of the reactor, the tube being partly surrounded by a stationary annular fluidized bed; gas velocities adjusted to particle Froude numbers; titanium oxide; iron; iron oxide (FeO) |
| 01/21/2010 | WO2010006905A1 Method and system for energy-optimized and co<sb>2 </sb>emission-optimized iron production |
| 01/21/2010 | CA2731290A1 Method and system for energy-optimized and co2 emission-optimized iron production |
| 01/20/2010 | CN101629222A Method for obtaining chromated nickel base material by treatment of chrome slag with smelting reduction process |
| 01/19/2010 | US7648551 Furnace is weighed periodically to detect quantity of discharged scrap inside furnace itself, temperature of liquid bath inside furnace is detected periodically and discharge delivery of scrap in furnace is detected by weighing and is regulated to maintain temperature of bath at pre-determined value |
| 01/14/2010 | WO2010005023A1 Briquette manufacturing method, reductive metal manufacturing method, and zinc or lead separation method |
| 01/14/2010 | CA2727581A1 Method for producing briquette, method for producing reduced metal, and method for separating zinc or lead |
| 01/13/2010 | CN201381334Y Iron-bearing material suspension reducing furnace |
| 01/13/2010 | CN201381333Y Iron-bearing material suspension two-stage fast reducing furnace |
| 01/13/2010 | CN100580098C Direct reduction process |
| 01/13/2010 | CN100580097C Supplying of solid feed materials for direct smelting process |
| 01/06/2010 | EP1991711B1 Reduction process and plant |
| 01/06/2010 | CN201376254Y Remover for mechanical seal of dynamic distributing device of COREX stove |
| 01/06/2010 | CN101619371A Method for recovering vanadium, titanium and iron from vanadium titanium magnetite |
| 01/06/2010 | CN100577819C Internal rotation type calcine furnace |
| 12/30/2009 | WO2009156238A1 Process gas purification device for a melt reduction system for extracting pig iron |
| 12/30/2009 | CN201373662Y Ring canal device of shaft furnace |
| 12/30/2009 | CN100575505C Method for directly reducing reduce gas in iron by heating red coke |
| 12/30/2009 | CA2729434A1 Process gas purification device for a melt reduction system for extracting pig iron |
| 12/29/2009 | US7638088 Method and device for producing pig iron and/or pig iron intermediate products |
| 12/29/2009 | CA2242255C Process for producing sponge iron by direct reduction of iron-oxide-containing material |
| 12/23/2009 | EP2136173A1 Method for treating high-temperature waste gas |
| 12/23/2009 | CN201368666Y Ring-shaped reduction furnace being capable of quickly eliminating leaking material of water seal groove |
| 12/23/2009 | CN201368665Y Ring-shaped reduction furnace with non-material-leakage bottom |
| 12/16/2009 | EP2132344A1 Method and system for the supply of hot direct reduced iron for multiple uses |
| 12/16/2009 | CN101605913A Rotary hearth reducing furnace and method of operating the same |
| 12/16/2009 | CN101603110A Method for directly deoxygenizing ferro-nickel in shaft furnace by using laterite nickel ore as raw material |
| 12/16/2009 | CN101603109A Process for treating top gas of reduction shaft furnace |
| 12/16/2009 | CN100569965C Binding agent for normal temperature pelletized and cured iron-containing mud cold-cured pellet |
| 12/15/2009 | US7634451 Multivariate, predictive regulation of a direct reduction process |
| 12/15/2009 | US7632335 Heating reducible mixture (e.g., reducible micro-agglomerates; reducing material and reducible iron bearing material; reducible mixture including additives such as a fluxing agent; compacts, etc.) on hearth material layer in presence of other carbonaceous material |
| 12/15/2009 | US7632334 Method and plant for the heat treatment of solids containing iron oxide |
| 12/15/2009 | US7632330 Production of iron using environmentally-benign renewable or recycled reducing agents |
| 12/15/2009 | US7632329 selectively preparing lumps of n-type scrap silicon containing a specific impurity element as a dopant, crushing the prepared lumps of scrap silicon, placing the crushed silicon into a vacuum vessel, irradiating the crushed silicon with an electron beam to melt it and vaporize dopant, solidifying the Si |
| 12/15/2009 | CA2313622C Start-up procedure for direct smelting process |
| 12/10/2009 | WO2009146982A1 Process and device for producing pig iron or liquid steel precursors |
| 12/10/2009 | CA2726957A1 Process and device for producing pig iron or liquid steel precursors |
| 12/09/2009 | CN101598500A Continuous steel furnace slag-free tapping hole |
| 12/09/2009 | CN101597663A Energy recovery system for preparing sponge iron by gasification of high-pressure pulverized coal and method thereof |
| 12/09/2009 | CN101597662A Method for producing direct reduced iron |
| 12/09/2009 | CN100567511C Electric arc furnace |
| 12/09/2009 | CN100567510C Process for producing reduced matal and agglomerate with carbonaceous material incorporated therein |
| 12/09/2009 | CN100567509C Tunnel kiln without exterior combustion chamber and production of direct reduced iron by composite tunnel kiln |
| 12/08/2009 | US7628839 Method and system for producing metallic iron nuggets |
| 12/03/2009 | WO2009145348A1 Method for manufacturing pig iron |
| 12/03/2009 | WO2009144521A2 Steelmaking facility comprising a direct reduction plant and an electric-arc furnace |
| 12/02/2009 | CN101591718A Iron making method using direct reduction-grinding screening to treat copper slag and nickel slag |
| 12/02/2009 | CN100564558C Method for synthetically reclaiming iron, vanadium and titanium from vanadium titanium magnet concentrate |