| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
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| 09/28/2004 | US6797230 Gas stopper brick for metallurgical vessels with a sealing body that is subject to screw pressure springs |
| 09/28/2004 | US6797032 Method for measuring bath level in a basic oxygen furnace to determine lance height adjustment |
| 09/23/2004 | US20040182203 Method for decarbonization refining of chromium-containing molten steel |
| 09/22/2004 | EP1341738B1 Method for producing a fire-resistant lining |
| 09/22/2004 | EP1117845B8 Method for the production of a bulk of molten metal, a metallurgical product, and use of such a product |
| 09/22/2004 | CN1167930C Equipment for jetting granular material into container |
| 09/22/2004 | CN1167813C Machine pressing formation process for making slag retainer |
| 09/21/2004 | US6793710 Method for blowing oxygen in converter and top-blown lance for blowing oxygen |
| 09/21/2004 | US6793708 Containing source of elemental carbon, calcium carbide and oxide; optimizing foaming at all stages; batch to batch consistency |
| 09/21/2004 | US6793160 Burner nozzle |
| 09/16/2004 | WO2004079020A1 Methods of switching and changing bottom-blown tuyere in converter |
| 09/16/2004 | WO2004079019A2 Gas bubbling element and corresponding gas bubbling system |
| 09/16/2004 | US20040178545 System for optically analyzing a molten metal bath |
| 09/15/2004 | EP1457575A1 Device for observing the charge in an electric steel production furnace |
| 09/15/2004 | EP1457574A1 Method for pretreatment of molten iron and method for refining |
| 09/15/2004 | EP1234193B1 Measurement of the wear of the fireproof lining of a metallurgical vessel |
| 09/15/2004 | EP1025267B2 Method for smelting fine grained direct reduced iron in an electric arc furnace |
| 09/15/2004 | CN2641056Y Oxygen lance base brick of wall of electric furnace |
| 09/14/2004 | US6792358 System for a non-invasive online continuous measurement of phrase levels in converters or pyrometallurgical furnaces |
| 09/14/2004 | US6790406 Mechanical waves generator system in a converter or pyrometallurgical furnace |
| 09/14/2004 | US6790254 Method for controlling and adjusting the concentration of a gas component in a melt and a device for carrying out the same |
| 09/09/2004 | US20040174920 Method and apparatus for spatial energy coverage |
| 09/08/2004 | CN2639312Y Slag device for steelmaking |
| 09/07/2004 | US6787121 Contacting manganese oxide with hydrocarbon gas to carburize and convert to manganese carbide; carbiding |
| 09/07/2004 | US6787099 Mechanical waves generator system in a converter or pyrometallurgical furnace |
| 09/02/2004 | WO2004074524A1 Molten metal siphon with internal and external heater |
| 09/02/2004 | WO2004074523A2 Elevated discharge gas lift bubble pump and furnace for use therewith |
| 09/02/2004 | WO2004074521A2 Hot material conveyor |
| 09/02/2004 | US20040168788 Riser(s) size reduction and/or metal quality improving in gravity casting of shaped products by moving electric arc |
| 09/01/2004 | EP1452615A1 Method for reuse of steel sheet scrap |
| 09/01/2004 | EP1452609A1 Dynamic control method during molten metal treatment |
| 09/01/2004 | CN1526261A Mounting arrangement for auxiliary burner or lance |
| 09/01/2004 | CN1524825A Gunning refractory of converter tap hole |
| 08/26/2004 | US20040164466 Vortex inhibitor with sacrificial rod |
| 08/26/2004 | DE19744151C5 Verfahren zum Schmelzen von feinkörnigem, direkt reduziertem Eisen in einem Elektrolichtbogenofen A method of melting fine-grained, direct reduced iron in an electric arc furnace |
| 08/26/2004 | DE10259434B3 Gasspüleinrichtung für metallurgische Schmelzgefäße Gas purging device for metallurgical melting vessels |
| 08/26/2004 | DE10209472B4 Verfahren zum Erzeugen von nichtrostendem Stahl, insbesondere von chrom- oder chromnickelhaltigem Edelstahl A method for producing stainless steel, particularly of chrome or stainless steel chromnickelhaltigem |
| 08/25/2004 | CN1523122A Carburant for steel-making and producing process and method of using thereof |
| 08/25/2004 | CN1523121A Carbon-iron heat generating agent for steel-making and producing process and method of using thereof |
| 08/25/2004 | CN1163718C Water cooling arm for pre-heater on top of furnace |
| 08/24/2004 | US6780258 Austenitic stainless steel less susceptible to cracking during forming and a manufacturing method thereof |
| 08/24/2004 | CA2158719C Sensor arrangement for temperature measurement |
| 08/19/2004 | WO2004069448A2 Tightening device for a refractory plate of a sliding closure on the spout of a vessel for molten metal |
| 08/19/2004 | US20040159988 Adjustable form |
| 08/18/2004 | CN1522307A Decarburization refining method of chromium containing molten steel |
| 08/12/2004 | US20040154708 Drawability,stretchability, workability; contorlling concentration; mixing with mixed oxide ; solidification ; hot rolling , annealing, cold rolling |
| 08/12/2004 | US20040154437 Method of degassing molten steel |
| 08/11/2004 | EP1445337A1 Method for dephsophorization of molten irona |
| 08/11/2004 | EP1404881A4 A gas injection lance |
| 08/11/2004 | CA2457621A1 Adjustable form |
| 08/10/2004 | US6773659 Gas injection lance |
| 08/10/2004 | US6773486 Use of rice hull ash in steelmaking |
| 08/10/2004 | US6773484 Without the need for a lance extension to establish a recirculation zone for the gases ejected from the lance; providing oxygen forsteelmaking operations such as electric arc furnaces |
| 08/10/2004 | US6772921 Refractory nozzle |
| 08/05/2004 | WO2004065871A1 Arrangemnt and method for opening and closing the taphole of a smelting reactor |
| 08/05/2004 | WO2004065643A1 Eaf side wall panel to provide for primary and secondary combustion as well as particel injection at the same time, and operating method therefor |
| 08/05/2004 | WO2004065641A1 An improved smelting process for the production of iron |
| 08/04/2004 | EP1443031A1 Thermally insulating coating material for refractory containing carbon |
| 08/04/2004 | CN2630255Y Top oxygen blowing device for steelmaking electric furnace |
| 08/04/2004 | CN1517588A Coherent Jet flow device with nozzle having outer angle with axis of spray gun |
| 07/28/2004 | EP1441176A1 Coherent jet system with outwardly angled flame envelope ports |
| 07/28/2004 | EP1440174A2 Iterative cycle process for carbon supersaturation of molten metal and solid metals obtained thereby |
| 07/28/2004 | CN2628535Y Apparatus for removing cold steel from convertor wall |
| 07/28/2004 | CN1159561C Electric arc furnace cooling apparatus |
| 07/23/2004 | CA2416189A1 Converter oxygen puncher lance |
| 07/22/2004 | US20040140598 Lining of the cone of a converter |
| 07/22/2004 | US20040140597 Taphole closures |
| 07/22/2004 | DE10323233B4 Vorrichtung und Verfahren zur Erzeugung eines kohärenten Strahls mit Einzelringflammeneinhüllender Apparatus and method for generating a coherent beam with Einzelringflammeneinhüllender |
| 07/21/2004 | EP1386011A4 Ladle refining of steel |
| 07/21/2004 | EP1377689A4 Apparatus for injecting gas into a vessel |
| 07/21/2004 | EP1183513B1 Device for taking slag samples |
| 07/21/2004 | CN2627005Y Energy conservation combined type compression central water-cooling oxygen gun injector |
| 07/21/2004 | CN1514026A Converter slay line dry commissioning and supplementing method |
| 07/21/2004 | CN1514025A Short flow path production line of yearly yield 50-100 thousand tons multi variety small lot special steel |
| 07/21/2004 | CN1158586C Process and apparatus for backing-up or supplementing gas supply system |
| 07/21/2004 | CN1158394C Technology for producing high-purity high-carbon high-chromium bearing steel |
| 07/15/2004 | US20040135296 Coherent jet system with outwardly angled flame envelope ports |
| 07/14/2004 | EP1437420A1 Method for producing titanium oxide containing slag |
| 07/14/2004 | CN2625391Y Elevating gear for revolving furnace cover skirt |
| 07/08/2004 | WO2004057286A1 A process for keeping a tuyere passing through a metallurgical vessel free of a skull |
| 07/08/2004 | WO2004056505A1 Gas flushing device for metallurgical melting pots |
| 07/08/2004 | US20040129925 Composition of matter tailoring: system I |
| 07/08/2004 | US20040129350 exhibit long-range ordering and can be distinguished by a change in energy, electronic properties, physical properties; X-ray fluorescence spectroscopy is a preferred |
| 07/08/2004 | CA2510963A1 A process for keeping a tuyere passing through a metallurgical vessel free of a skull |
| 07/07/2004 | EP1435484A2 Burner-lance and combustion method for heating surfaces susceptible to oxidation or reduction |
| 07/07/2004 | EP1434888A1 Supplying solid feed materials for a direct smelting process |
| 07/07/2004 | CN1511196A Cast piece and sheet of ferritic stainless steel, and method for production thereof |
| 07/01/2004 | WO2004055832A1 Method and apparatus for controling temperature uniformity of the burden in a direct reduction shaft furnace |
| 07/01/2004 | US20040123784 Burner-lance and combustion method for heating surfaces susceptible to oxidation or reduction |
| 07/01/2004 | DE202004007245U1 Refractory insert with internal channel for furnace tapping hole, includes refractory closure at one end and open hole at other, allowing burning lance introduction |
| 07/01/2004 | DE10259830A1 Verfahren zum Freihalten einer Blasdüse, die ein metallurgisches Gefäß durchquert, von Pfannenrest A method for keeping a tuyere passing through a metallurgical vessel, of skull |
| 06/30/2004 | EP1432954A1 Replacement method and device for assembling and disassembling modules of an electric arc furnace |
| 06/30/2004 | EP1432837A1 Integrated prefabrication of reinforced concrete elements including production of concrete reinforcing bars and upgrading of the slag produced |
| 06/30/2004 | EP1432834A1 Arc furnace and method for operating this arc furnace |
| 06/30/2004 | EP1432541A1 Furnaces for the production of magnesium alloys |
| 06/30/2004 | EP1315841A4 Process for the metallurgical treatment of molten steel in a converter with oxygen top blown |
| 06/30/2004 | CN1508091A Refractory material for DC arc furnace hearth |
| 06/30/2004 | CN1155812C Immersed detecting and controlling needle for liquid detection |
| 06/24/2004 | US20040119211 Metal making lance assembly |
| 06/24/2004 | US20040119053 Composition of matter tailoring: System I |