| 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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| 03/16/1994 | EP0446252B1 Improvements relating to steel-making vessels |
| 03/16/1994 | EP0394455B1 Process for producing iron-boron-silicon alloy |
| 03/16/1994 | EP0331751B1 PROCESS FOR DECARBURIZING HIGH-Cr MOLTEN PIG IRON |
| 03/16/1994 | CN1083865A A method and an apparatus for sealing tuyeres in the surrounding refractory lining |
| 03/16/1994 | CN1024045C DC electric-arc furnace |
| 03/10/1994 | DE4327640A1 Tiltable converter |
| 03/02/1994 | CN1083115A Pulley spring assembly for balancing tilting torque of converter |
| 03/01/1994 | US5291513 Method and device for exhausting gases or fumes from a metallurgical container and an electric furnace provided with said exhaust device |
| 03/01/1994 | CA1327280C Sub-lance installation for carrying out measurements and/or taking samples in a metallurgical furnace |
| 03/01/1994 | CA1327268C Gas sink |
| 02/24/1994 | DE4315342C1 Treating molten metal, in partic. steel with a purifying agent - with liquid oxygen or a two=phase mixt. of liq and gaseous oxygen used as the purifying agent |
| 02/23/1994 | EP0583253A1 Taphole design and pouring method. |
| 02/23/1994 | CN2157192Y Slide overflow guide for dust-removing venturi of converter |
| 02/22/1994 | CA2003133C Air cooled gas injection lance |
| 02/16/1994 | EP0583164A1 The production of stainless steel |
| 02/16/1994 | CN1082186A Bottom electrode of DE arc furnace |
| 02/16/1994 | CN1082116A Foaming agent for smelting steel in electric arc furnace |
| 02/16/1994 | CN1082015A Surface treatment of refractories |
| 02/15/1994 | US5287382 Wall electrode for a DC electric metallurgical furnace |
| 02/15/1994 | US5286277 Charging solid ferrous material and two diffeent carbonaceous materials to furnace |
| 02/15/1994 | US5286273 Method for steel making in high temperature reactor |
| 02/12/1994 | CA2103843A1 Production of stainless steel |
| 02/09/1994 | EP0581813A1 Lance for immersion in a pyrometallurgical bath and method involving the lance |
| 02/09/1994 | EP0365680B1 A method for producing a reduced chromium-ore bearing powder |
| 02/08/1994 | CA1326776C Corrugated jacket for molten metal sampler |
| 02/03/1994 | WO1994002210A1 Treatment of polyvinylchloride |
| 02/01/1994 | CA2101351A1 Surface treatment of refractories |
| 01/26/1994 | EP0579746A1 Scanning laser measurement system |
| 01/26/1994 | EP0472721B1 Direct current electric furnace |
| 01/25/1994 | US5280884 Heat reflectivity control for atomization process |
| 01/19/1994 | EP0579591A1 Process for the production of a metal melt |
| 01/19/1994 | CN1080882A Multi-orifice sprinkler producing rotary force |
| 01/17/1994 | CA2100602A1 Process for the production of a metal melt |
| 01/13/1994 | DE4222854A1 Base electrode for direct current arc furnaces - with metal rods arranged in hearth base, with non-conducting refractory layers surrounding the rods |
| 01/10/1994 | CA2093095A1 Device for measuring the temperature of a molten metal |
| 01/08/1994 | CA2099961A1 Installation for lining an internal wall of an enclosure with brickwork |
| 01/06/1994 | WO1994000604A1 Process and device for blowing oxygen over metal melts |
| 01/06/1994 | WO1994000400A1 Refractory ceramic compound for lining the floors of electric-arc furnaces and a method of repairing them |
| 01/05/1994 | DE4221101A1 Feuerfeste keramische Masse zur Auskleidung von Böden an Elektro-Lichtbogenöfen und Verfahren zu deren Reparatur Refractory ceramic mass for lining shelves in electric arc furnaces and methods of repair |
| 01/05/1994 | CN1023410C Production of ingot iron with solid decarbonising pig iron and remelting in electric furnace |
| 01/04/1994 | US5275384 Drive for automatic lance change devices |
| 12/29/1993 | CN1080042A Composite lance |
| 12/28/1993 | US5274663 Direct-current arc furnace plant |
| 12/16/1993 | DE4224055C1 Redn. of iron@ ore into solid metallised ferrous prod. - moves ferrous sludge briquettes with min. heat loss to the refining vessel to save energy consumption |
| 12/15/1993 | EP0573779A1 Plugging means for metallurgical vessels with bottom closure |
| 12/15/1993 | CN1079421A Full cold type oxygen lance head forging process |
| 12/09/1993 | WO1993024662A1 Melting a mixture of scrap metal using scrap rubber |
| 12/09/1993 | DE4218244A1 Closed induction furnace with tilting mechanism - with the crucible tiltable in opposing directions |
| 12/08/1993 | EP0572848A2 Method of determination of the end-point during oxygen steelmaking in a converter |
| 12/08/1993 | EP0572609A1 Process and device for melting scrap. |
| 12/08/1993 | EP0359828B1 Method for detecting slag flow |
| 12/07/1993 | US5268924 Bottom structure for a DC electric arc furnace |
| 12/01/1993 | EP0571984A1 Composite lance |
| 11/30/1993 | US5266025 Composite lance |
| 11/23/1993 | US5265117 Method of exhausting gases and fumes from an electric arc furnace utilizing additional inlet gas duct ensuring constant pressure |
| 11/23/1993 | US5264020 Smelting plant with two melting furnaces arranged in juxtaposed relationship |
| 11/23/1993 | US5263690 Apparatus for metallurgical treatment of molten steel |
| 11/23/1993 | CA1324513C Alloy steel product, die blocks and other forgings and castings made thereof and a method to manufacture the product |
| 11/18/1993 | EP0570046A1 Method and apparatus for producing steel melts |
| 11/18/1993 | EP0569448A1 A method of manufacturing stainless steel. |
| 11/17/1993 | CN1078416A Method for controlling the homogeneity of ingredients in ingot making |
| 11/16/1993 | US5262367 Magnesite, flake graphite, lining for metallurgical furnaces |
| 11/11/1993 | WO1993022466A1 Mercury contaminated mud treatment |
| 11/10/1993 | EP0568578A1 Lance carriage. |
| 11/10/1993 | CN2145793Y Three-layered split-flow oxygen lance for steelmaking |
| 11/10/1993 | CN1022694C Arrangement for supplying media to blowing lance |
| 11/10/1993 | CN1022693C Plant for making steel, especially mini steel-making plant |
| 11/09/1993 | US5259880 Projection molten impeller for concave section used in apparatus |
| 11/09/1993 | US5259591 Method for installing and removing a lance into and from a metallurgical vessel |
| 11/02/1993 | CA1323762C Dual action lance for ladles |
| 11/02/1993 | CA1323761C Production of steels containing low melting point metals |
| 11/02/1993 | CA1323758C Oxygen discharge nozzle |
| 11/02/1993 | CA1323757C Oxygen discharge nozzle |
| 11/02/1993 | CA1323756C Oxygen discharge nozzle |
| 10/27/1993 | EP0566940A1 A method and an apparatus for sealing tuyères in the surrounding refractory lining |
| 10/27/1993 | EP0428661B1 Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels |
| 10/27/1993 | CN1077751A Process for steelmaking in IF furnace |
| 10/27/1993 | CN1022576C Gas flushing device |
| 10/27/1993 | CN1022575C Arrangement for installing and removing lance into and from metallurgical vessel and method thereof |
| 10/26/1993 | US5257280 Gas introducing and stirring apparatus of metallurgical vessel |
| 10/21/1993 | DE4221266C1 Verfahren und Vorrichtung zum Aufblasen von Sauerstoff auf Metallschmelzen Method and apparatus for blowing oxygen on the molten metal |
| 10/20/1993 | EP0514383B1 Process and installation for renewing the refractory lining of foundry ladles |
| 10/20/1993 | CN2144127Y Suspended sleeve spindle driver for revolving furnace |
| 10/19/1993 | US5255284 Anode for an electic arc furnace utilizing electrode segments |
| 10/14/1993 | WO1993020246A1 Process and device for preventing contamination of the tapping steel by flush slag in a tipping converter |
| 10/14/1993 | DE4211593A1 Preventing contamination of steel with slag in tilting converters - using expandable plastic tap plug with central channel, made of special fire-resistant material with heat-resistant material with heat-resistant compression plate |
| 10/13/1993 | CN2143622Y Outside furnace fine refining spray gun |
| 10/12/1993 | US5252120 Method and apparatus for double vacuum production of steel |
| 10/12/1993 | US5251879 Top submerged injection with a shrouded lance |
| 10/06/1993 | EP0564432A2 Process for the production of steel from scrap |
| 10/06/1993 | EP0564056A1 Process and installation for the exhaust gas handling of an arc furnace |
| 10/06/1993 | CN1076967A Technique for steel-smelting from waste metal filings |
| 10/05/1993 | US5249779 Modified manifold assembly for directional gas distribution device |
| 10/05/1993 | US5249778 Gas stir plug device with visual wear indicator |
| 09/30/1993 | DE4227568A1 Reclamation of chromium@, PCB and plastics from discarded computers - by direct and indirect heating in a blast furnace with removal and, if necessary destruction of components at different temps. |
| 09/29/1993 | EP0562472A1 Method for triggering converter valves of a load commutated parallel resonant circuit converter of an induction oven |
| 09/22/1993 | EP0561723A1 Process and installation for post combustion air flow rate regulation of a metallurgical reactor fume collecting device |
| 09/22/1993 | EP0561181A2 Tap pipe for a converter or an electric arc furnace |
| 09/22/1993 | EP0560834A1 Bottom or wall structure for a metallurgical vessel. |
| 09/22/1993 | CN1076491A Method and device for regulating the combustion air flow rate of a flue gas collection device of a metallurgical reactor, corresponding collection device and metallurgical reactor |