| 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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| 03/19/1997 | CN1145469A Melting method for electric arc furnace with alternative sources of energy and relative electric arc furnace |
| 03/18/1997 | US5611990 Cooled converter trunnion ring |
| 03/18/1997 | US5611838 Supplying carriers and reducing agents into foamed slag; low energy |
| 03/13/1997 | WO1997009566A1 Process for burning fuel |
| 03/12/1997 | EP0760868A1 Method for producing steel in an electric arc furnace, and electric arc furnace therefor |
| 03/12/1997 | EP0572609B1 Process and device for melting scrap |
| 03/11/1997 | US5610937 Regulation method for a DC arc furnace |
| 03/11/1997 | US5609669 Method of manufacturing stainless steel |
| 03/11/1997 | US5609481 Direct-fired stratified atmosphere furnace system |
| 03/11/1997 | CA2063562C Smelting plant with two adjacent smelting furnaces |
| 03/05/1997 | EP0565690B1 Nozzle assembly for introducing fluids into a melt, and a method of operating the nozzle |
| 03/05/1997 | CN1144275A Apparatus for producing molten pig iron by direct reduction |
| 03/04/1997 | WO1997012066A1 Chromium ore smelting reduction process |
| 02/26/1997 | CN1143681A Method of reducing metal oxide in rotary hearth furnace heated by oxidizing flame |
| 02/26/1997 | CN1143680A Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 02/20/1997 | WO1997006653A1 Bottom electrode for an arc furnace operated with direct current and process for operating the furnace |
| 02/20/1997 | WO1997006394A1 Metal fusion furnace and metal fusing method |
| 02/19/1997 | CN1143411A Charging device for arc furnaces |
| 02/18/1997 | US5603746 Base oxygen furnace |
| 02/13/1997 | WO1997005438A2 Arc furnace in particular d.c. arc furnace, and process for preventing overheating of the furnace wall |
| 02/13/1997 | WO1997005290A1 Oxygen lance head for treating molten masses |
| 02/13/1997 | WO1997005289A1 Slag treatment |
| 02/13/1997 | WO1997002366A3 Method and apparatus for after-burning atmospheric gases in a steel smelting arc furnace |
| 02/12/1997 | EP0758022A1 Process and installation for spreading out castable masses, in particular for repair of hollow bricks in metallurgical vessels |
| 02/12/1997 | EP0757666A1 Metallurgical furnace vacuum slag removal |
| 02/12/1997 | CN1142845A Utilizing discarded carbon |
| 02/11/1997 | US5602867 Method of and device for operating an arc furnace with two vessels |
| 02/11/1997 | US5601625 Process and device for removing heavy metals and compounds containing heavy metals |
| 02/11/1997 | CA2071366C Pretreatment of chromium bearing metal scrap to remove chromium |
| 02/05/1997 | EP0757109A1 Smelting aggregate and its use for production of steel in one process step, in particular direct current (DC) arc furnace or oxygen converter |
| 02/05/1997 | EP0756642A1 Process for keeping a metallurgical vessel opening free from deposits |
| 02/05/1997 | EP0756641A1 Process and device for keeping a metallurgical vessel opening free from deposits |
| 02/05/1997 | EP0756640A1 Device for introducing a lance into a metallurgical vessel |
| 02/05/1997 | CN1142249A Apparatus for melting fine particles containing carbon and method thereof |
| 02/04/1997 | US5599375 Electric arc furnace equipped with auxiliary heat source |
| 02/04/1997 | US5599361 Stable compressed solid fuel pellets or briquets containing coal and/or coke fines with polymeric binder |
| 02/04/1997 | CA2101132C Mgo-c brick containing a novel graphite |
| 02/04/1997 | CA2097924C Bottom or wall structure for a metallurgical vessel |
| 02/01/1997 | CA2178703A1 Method and apparatus for applying compositions |
| 01/31/1997 | EP0713054A4 Process and device for the thermal destruction of waste |
| 01/29/1997 | EP0756012A1 Decarburization refining process for chromium-containing molten metal, and associated top blowing lance |
| 01/29/1997 | EP0755736A1 Improvements in metallurgical conversion |
| 01/29/1997 | EP0755329A1 Method of protecting ladle linings |
| 01/29/1997 | CN2246154Y Electric furnace coal oxygen gun |
| 01/29/1997 | CN1141655A Loading device for feeding electric furnace |
| 01/29/1997 | CN1033918C Blowing lance suspension with integrated medium supply |
| 01/23/1997 | WO1997002366A2 Method and apparatus for after-burning atmospheric gases in a steel smelting arc furnace |
| 01/23/1997 | WO1997002365A1 Device for after-burning combustible components of the atmosphere in metallurgical smelting vessels |
| 01/23/1997 | WO1997002364A1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 01/23/1997 | CA2225404A1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 01/22/1997 | EP0754767A1 Oxy-fuel rotary kiln hearth melting furnace |
| 01/22/1997 | EP0754246A1 Apparatus for injecting gases or fluids in general and particulates, particularly for injecting oxygen, in furnaces for the production of steel |
| 01/22/1997 | EP0754245A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 01/22/1997 | CN1141112A Submerged Arc furnace with vertically movable frame |
| 01/21/1997 | CA2054774C Direct current electric furnace for melting metal |
| 01/16/1997 | DE19544159C1 Gefäßmantelsicherung Vessel shell fuse |
| 01/16/1997 | DE19529932C1 Lanzenkopf einer Blaslanze zur Behandlung von Schmelzen Lance head of a lance for treating melts |
| 01/15/1997 | EP0753586A2 Steel production method, particularly for producing steel by means of electric furnaces |
| 01/15/1997 | EP0650384B1 Treatment of polyvinylchloride |
| 01/15/1997 | CN2245064Y Oxygen-gas spray gun for producing iron and steel |
| 01/15/1997 | CN1140471A Process for melting metal or non metal and material consisting of at least one hydrocarbyl polymer therefor |
| 01/14/1997 | US5592834 Cryogenic distillation |
| 01/09/1997 | WO1997000973A1 Nozzle with a welded lance head for melt agitation |
| 01/08/1997 | EP0752478A1 Method of refining molten metal |
| 01/08/1997 | EP0583253B1 Taphole design and pouring method |
| 01/08/1997 | CN1139981A Nozzle and method of blowing hot metal |
| 01/08/1997 | CN1139889A Improvments in metallurgical conversion |
| 01/03/1997 | WO1997000413A1 Method for melting a batch in an electric arc furnace |
| 12/31/1996 | US5590152 DC arc furnace |
| 12/31/1996 | US5590151 Process for melting scrap iron in an electric furnace and installation for implementing the process |
| 12/31/1996 | US5590150 Electric arc melting furnace |
| 12/31/1996 | US5589118 Forming into briquettes with binder |
| 12/31/1996 | US5588982 Process for producing foudry iron |
| 12/27/1996 | WO1996041896A1 Method for an improved energy input into a scrap bulk |
| 12/27/1996 | EP0750168A1 Method of installing a refractory lining |
| 12/24/1996 | US5588018 Metallurgical container comprising a hearth bottom electrode |
| 12/24/1996 | US5587002 Adding quicklime, iron ore, slag, metal fibrils to fatty rolling mill slurries, homogenizing, compacting |
| 12/19/1996 | WO1996041028A1 Combined oxygen blowing/fuel burner lance assembly |
| 12/19/1996 | WO1996041023A1 Appartus for self-sealing a submerged inlet tuyere of a molten metal reactor |
| 12/18/1996 | EP0748994A1 Direct-fired stratified atmosphere furnace system |
| 12/18/1996 | EP0748392A1 Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 12/17/1996 | US5584909 To prevent slopping by calculating the approximate starting point of the peak decarburization period for the charge and then adjusting the oxygen flow rate to be at a minimum at that time |
| 12/12/1996 | WO1996039290A1 Process for recovering iron from iron-rich material |
| 12/12/1996 | CA2223044A1 Process for recovering iron from iron-rich material |
| 12/11/1996 | EP0747648A1 Levitation melting method and melting and casting method |
| 12/11/1996 | EP0747492A1 Method for melting ferrous metals by means of an electric arc furnace charged with ferrous materials containing energy-releasing substances |
| 12/11/1996 | EP0747491A1 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame |
| 12/11/1996 | EP0747490A1 Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 12/11/1996 | EP0746737A1 Charging device for arc furnaces |
| 12/11/1996 | EP0746435A1 Slag control shape release apparatus for molten metal vessels |
| 12/10/1996 | US5582391 For controlling the flow of molten metal from a vessel |
| 12/09/1996 | CA2151350A1 Method and apparatus for producing steel rods with a desired tensile strength and model for simulating same |
| 12/07/1996 | CA2176692A1 Direct use of sulfur bearing nickel concentrate in making ni alloyed stainless steel |
| 12/07/1996 | CA2175750A1 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame |
| 12/04/1996 | EP0745522A1 Anti theft device for vehicles |
| 12/04/1996 | CN1137295A Furnace spraying repair device |
| 12/03/1996 | US5580237 Oxidant lancing nozzle |
| 11/28/1996 | WO1996037632A1 Nozzle for blowing gas into molten metal and usage thereof |
| 11/28/1996 | CA2195541A1 Nozzle for blowing gas into molten metal and usage thereof |
| 11/27/1996 | EP0744585A1 Method for preheating scrap by reheating the exhaust gases, and device for performing the method |