| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 11/21/2000 | US6149859 Gasification plant for direct reduction reactors |
| 11/21/2000 | US6149709 Melts of iron for steels from reduction of iron oxide with carbon reducing gases |
| 11/21/2000 | US6149708 Process for producing sponge iron |
| 11/16/2000 | WO2000068440A1 Method and device for induction-heating and melting metal oxides-containing powder and granular material |
| 11/15/2000 | EP1051525A1 Method for loading an electric oven with a powder material in the form of a filled hollow body |
| 11/15/2000 | CN1273277A Direct reduction method and rotary kiln hearth |
| 11/14/2000 | US6146442 Apparatus and method for introducing gas into a shaft furnace without disturbing burden flow |
| 11/14/2000 | US6146441 Reducing iron oxides in rotary hearth furnace |
| 11/14/2000 | US6146440 Process for the direct production of cast iron from iron bearing ore, and an apparatus suitable to carry out said process |
| 11/14/2000 | US6146437 Metal containing compound reduction and melting process |
| 11/08/2000 | EP1050589A1 Direct reduction method and rotary hearth furnace therefor |
| 11/07/2000 | US6143054 Molten bath-based direct smelting process for producing metals from metal oxides(including partially reduced metal oxides), process includes causing upward movement of splashes, droplets, streams of molten material from metal layer of bath |
| 11/07/2000 | US6143053 Process for producing sponge iron by direct reduction of iron-oxide-containing material |
| 11/06/2000 | CA2307422A1 Direct reduction method and rotary hearth furnace |
| 11/02/2000 | WO2000065114A1 FLUIDIZED BED REDUCTION OF LATERITE FINES WITH REDUCING GASES GENERATED $i(IN SITU) |
| 11/02/2000 | WO2000065106A1 Method of producing slurry-coated feed stock to be used for a direct reduction process |
| 11/02/2000 | WO2000065102A1 Method and device for melting down finely particulate material containing metal, such as sponge iron |
| 11/02/2000 | EP1047795A1 Method for producing hot metal |
| 11/02/2000 | CA2367596A1 Method and device for melting down finely particulate material containing metal, such as sponge iron |
| 10/25/2000 | EP1045928A1 Method for producing pig iron |
| 10/24/2000 | US6136065 In a wide range of particle size, the reducing agent being hydrogen placed in a fluidized bed gutter with a plurality of sequentially arranged chambers |
| 10/24/2000 | US6135766 Rotary hearth furnace and method of operating the same |
| 10/24/2000 | CA2205529C Plasma furnace and a method of operating the same |
| 10/18/2000 | EP0889974B1 Fluidized bed type reducing system for reducing fine iron ore |
| 10/17/2000 | US6132489 Reducing gas flows through descending moving bed of coarser particles and forms ascending fluidized bed of fines; particles charged to the reactor are fed into lower portion of fluidized bed, reduced fines withdrawn in upper portion |
| 10/11/2000 | EP1042514A1 Method for reforming reducing gas in a fluidized bed process for reduction of ore |
| 10/11/2000 | CN1269839A Device for producing sponge iron |
| 10/11/2000 | CN1057341C Method for reducing iron oxides in rotary hearth furnace and method for producing metal iron |
| 10/10/2000 | US6129777 Method of producing reduced iron agglomerates |
| 10/10/2000 | US6129776 Controlling gas utilization ratio inside the furnace by adjusting the charge height of the charge and the height of the coke bed; efficiently reducing and melting the iron ore at a low fuel ratio |
| 10/04/2000 | EP1041163A1 Method for hot agglomeration of solid metallized iron particles to produce alloyed briquettes |
| 10/04/2000 | EP0809713B1 Process for producing liquid raw iron or liquid steel base products and sponge iron and plant for implementing it |
| 10/04/2000 | CN1057131C Fluidized bed for treating dsut from arc furnace |
| 10/03/2000 | US6126718 Method of producing a reduced metal, and traveling hearth furnace for producing same |
| 10/03/2000 | US6126717 Steel-making method and plant |
| 09/28/2000 | WO2000056941A1 Treatment of iron oxide agglomerates before introduction into furnace |
| 09/27/2000 | EP1038038A1 Method for producing directly reduced iron in a layered furnace |
| 09/27/2000 | CN1268187A Method of making iron and steel |
| 09/26/2000 | CA2181409C Method and apparatus for producing pig iron by smelting reduction and method of obtaining such a plant |
| 09/21/2000 | WO2000055559A1 A method and apparatus for reducing a feed material in a rotary hearth furnace |
| 09/21/2000 | WO2000055379A1 Device for producing hot-briquetted metallic sponge, especially hot-briquetted sponge iron |
| 09/21/2000 | CA2365982A1 Device for producing hot-briquetted metallic sponge, especially hot-briquetted sponge iron |
| 09/20/2000 | EP1036762A1 Method of manufacturing iron carbide |
| 09/20/2000 | EP1036203A1 Method and apparatus for controlling dri carburization |
| 09/20/2000 | CN1056652C Circulating fludized bed furnace for prereduction of fine iron ore |
| 09/19/2000 | US6120577 Separating and recovering iron, zinc and lead from steel plant waste oxides, comprising mixing waste oxides and sludge which contains iron zinc and lead, adding coke particles, briquetting the mixture, firing to reduce iron oxide to iron |
| 09/14/2000 | WO2000053818A1 Combined separation device of rotary drum cooler and stationary magnetic separator |
| 09/13/2000 | EP1034312A1 Method for reducing iron oxides and smelting iron and installations therefor |
| 09/13/2000 | EP1034311A1 Direct smelting process for producing metals from metal oxides |
| 09/12/2000 | US6117387 Providing feed comprising iron oxide and carbonaceous material into oxidizing zone of furnace, providing first and second oxidants and first and second fuels into the oxidizing zone, reacting iron oxide with reducing material, recovering iron |
| 09/08/2000 | WO2000052214A1 Method for optimizing the layout and operation of a reduction method |
| 09/06/2000 | EP1032714A1 Electric arc low-shaft smelting furnace with a central tube with telescopic electrodes and a sliding upper receptacle lid |
| 08/31/2000 | WO2000050969A2 Mass generation of individual virtual servers, virtual web sites and virtual web objects |
| 08/31/2000 | WO2000050649A2 Method and apparatus for removing undesirable metals from iron-containing materials |
| 08/31/2000 | WO2000036161A3 Method for feeding fines in a light-arc furnace |
| 08/30/2000 | EP0910295A4 Cryoplasty device and method |
| 08/29/2000 | US6110413 3-Stage fluidized bed type fine iron ore reducing apparatus having x-shaped circulating tubes |
| 08/24/2000 | WO2000049184A1 Direct reduction method for iron oxides with conversion to iron carbide |
| 08/23/2000 | EP1029092A1 Method for producing directly-reduced iron, liquid pig iron and steel |
| 08/23/2000 | EP1029088A1 Withdrawal device for a shaft furnace |
| 08/23/2000 | EP1029087A1 Device for withdrawing lumpy material |
| 08/23/2000 | EP1029086A1 Method for producing a mixture of iron carbide and granular, directly reduced iron |
| 08/23/2000 | CN1055730C Reduced ion mfg. method and apparatus |
| 08/23/2000 | CN1055729C Method and apparatus for manufacturing reduced iron |
| 08/22/2000 | CA2212104C Method for manufacturing coal agglomerates for use in direct iron smelting reducing furnace |
| 08/17/2000 | WO2000047780A2 Method and apparatus for preheating of direct reduced iron used as feed to an electric arc furnace |
| 08/16/2000 | EP1027569A1 Method for operating moving hearth reducing furnace |
| 08/16/2000 | EP1027461A1 Method and apparatus for making metallic iron |
| 08/16/2000 | EP0793731B1 Process and apparatus for the manufacture of steel from iron carbide |
| 08/16/2000 | CN1263563A Shaft furnace |
| 08/16/2000 | CN1263162A Normal temperature sponge iron deoxidizing agent production method |
| 08/16/2000 | CN1055503C Process for producing liquid pig iron or semifinished steel products from ore |
| 08/09/2000 | EP1026265A1 Method of producing a reduced metal, and traveling hearth furnace for producing same |
| 08/09/2000 | EP1025267A1 Method for smelting fine grained direct reduced iron in an electric arc furnace |
| 08/09/2000 | CN1262332A Method for producing and reducing metal from material containing metal and mobile hearth furnace |
| 08/03/2000 | WO2000044947A1 Method for producing liquid pig iron |
| 08/03/2000 | WO2000044943A1 Method for direct steelmaking |
| 08/03/2000 | DE19846100C2 Gleichstromlichtbogenofen zur Herstellung von Stahl sowie Verfahren hierzu DC arc furnace for producing steel and method therefor |
| 08/02/2000 | EP1024203A1 Process and apparatus for the reduction of iron ore |
| 08/02/2000 | CN1261923A Method for using coal fines in a melt-down gasifier |
| 08/02/2000 | CN1055126C Iron containing scrap melting method |
| 08/01/2000 | US6096112 High carbon content briquettes |
| 07/26/2000 | EP1022348A1 Method for manufacturing reduced iron pellets including controlled water cooling of the same |
| 07/26/2000 | EP1022345A1 Production method of iron carbide |
| 07/26/2000 | EP1021570A1 Method of making iron and steel |
| 07/26/2000 | EP1021569A1 Method and device for extracting iron by direct reduction |
| 07/26/2000 | EP0958385A4 Method of agglomerating oil-containing steel mill waste |
| 07/26/2000 | CN1261106A Method and apparatus for extracting metals from ores |
| 07/19/2000 | EP1020535A1 Method for manufacturing reduced iron agglomerates and rotary hearth apparatus therefor |
| 07/19/2000 | EP1017858A4 Mixed bed iron reduction process |
| 07/12/2000 | EP1017860A1 Refractory wall, metallurgical vessel comprising such a refractory wall and method in which such a refractory wall is applied |
| 07/12/2000 | EP1017859A1 Device for producing sponge iron |
| 07/12/2000 | EP1017858A1 Mixed bed iron reduction process |
| 07/12/2000 | EP1017619A1 Oxygen-fuel boost reformer process and apparatus |
| 07/11/2000 | US6086653 Smelting-reduction apparatus and method for producing molten pig iron using the smelting reduction apparatus |
| 07/11/2000 | US6085672 Apparatus for blowing synthetic resin into furnace |
| 07/06/2000 | WO2000039351A1 Eaf dust treatment by pelletising and fluidised-bed reduction |
| 07/06/2000 | DE19859354A1 Verfahren und Vorrichtung zur Erzeugung von Metall aus Metallerzen Method and apparatus for producing metal from metal ores |
| 07/05/2000 | EP1015644A1 Method and apparatus for the direct reduction of a material containing iron oxide in a particulate form |
| 07/05/2000 | CN1259172A Method for controlling a smelting reduction process |