| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 11/17/1999 | CN1046553C Method and apparatus for treatment in molten cast iron baths reaction material having low or high production of gas |
| 11/16/1999 | US5985051 Shape steel material having high strength, high toughness and excellent fire resistance and process for producing rolled shape steel of said material |
| 11/16/1999 | CA2104910C Process and apparatus for vacuum degassing molten steel |
| 11/10/1999 | EP0955388A1 Die casting steel and method for manufacture |
| 11/10/1999 | EP0954615A1 Method and installation for ladle treatment of steel |
| 11/09/1999 | US5980607 Supplying flow of oxygen separated from air by rectification to molten ferrous metal in steelmaking process |
| 11/09/1999 | CA2021657C Alloy preparation of hydrogen storage material |
| 11/04/1999 | WO1999055920A1 A cover for a metallurgical vessel |
| 11/03/1999 | EP0953394A1 Refractory pipe with exterior insulation and method to seal the joints |
| 11/03/1999 | CN1233664A Alloy contg. Si, Ba, Sr, Mg, Al and Fe for deoxidising of molten steel |
| 10/29/1999 | CA2270300A1 Refractory channel with outer insulation and method for joint packing |
| 10/28/1999 | WO1999054511A1 Variably insertable combined lance with displaceable burner and blower lance bodies |
| 10/26/1999 | US5974077 Preheating entire vacuum vessel, controlling total pressure as well as partial pressure of oxygen, hydrogen, and carbon monoxide in specific ratio; designed with double jacket structure to water cool, so inside of furnace is baked |
| 10/26/1999 | US5972129 Smelting titanium-free liquid steel containing nitrogen, adding titanium-containing oxide, chemically reducing with reducing agent and heat treating steel to form high bainite content |
| 10/21/1999 | WO1999053105A1 Method for making stainless steel and steel with high alloy addition content in an electric furnace comprising two separate zones |
| 10/20/1999 | EP0891431B1 Desulphurising calcium carbide blend |
| 10/14/1999 | WO1999051785A1 Method for alloying steels and device for carrying out the method |
| 10/13/1999 | EP0949339A1 RH vacuum process with controlled circulation rate for the decarburization of steel melts |
| 10/13/1999 | CN1045656C Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air |
| 10/07/1999 | DE19815298A1 Verfahren zur Reduzierung des Kohlenstoffgehalts einer Stahlschmelze A method for reducing the carbon content of a steel melt |
| 10/07/1999 | DE19814748A1 Verfahren zum Legieren von Stählen und Vorrichtung zur Durchführung des Verfahrens Method for alloying steels and apparatus for carrying out the method |
| 10/06/1999 | EP0946762A2 Process for reducing fume emissions during molten metal transfer |
| 09/23/1999 | WO1999047712A1 Device for vacuum refining molten metal, especially molten steel |
| 09/22/1999 | EP0792378B1 Process and device for blowing oxygen-containing gas with and without solid material on a metal melt in a metallurgical vessel, especially an rh vessel |
| 09/15/1999 | CN2338348Y Blowing gun transmission equipment |
| 09/15/1999 | CN1045110C Calcium-silicon compound deoxident and producing technology thereof |
| 09/14/1999 | US5951738 An apparatus for producing coated magnesium granules comprising a device forming droplets of the molten metal, a fluidized bed for receiving the droplets, coating with a chloride salt, forming a protective anti-oxidation coatings |
| 09/14/1999 | CA2009923C A process and an apparatus for the vacuum processing of metals |
| 09/09/1999 | DE19811722C1 Apparatus for vacuum refining of metal, in particular, steel melts |
| 09/08/1999 | EP0866771B1 Iron sulphide compositions |
| 09/07/1999 | CA2186057C Method and apparatus for controlled turbulent purging of open containers |
| 09/07/1999 | CA2014999C Gas injector |
| 09/01/1999 | CN1227266A Deoxidizing agent for converter steel-making |
| 09/01/1999 | CN1227265A Method for injection of oxygen in electric arc furnace |
| 08/31/1999 | US5945063 Bottom blown gas blowing apparatus for molten metal ladle |
| 08/25/1999 | CN1044821C Apparatus for vacuum degasifying liquid steel |
| 08/19/1999 | WO1999041421A1 Steel for thin sheet excellent in workability and method for deoxidation thereof |
| 08/12/1999 | WO1999040229A1 Method for loading an electric oven with a powder material in the form of a filled hollow body |
| 08/05/1999 | WO1999039358A1 Soft magnetic nickel-iron alloy with low coercive field strength, high permeability and improved resistance to corrosion |
| 08/03/1999 | US5931985 Process and device for blowing oxygen-containing gas with and without solid material on a metal melt in a metallurgical vessel |
| 08/03/1999 | CA2044805C Vacuum-suction degassing apparatus |
| 07/28/1999 | EP0931839A1 Process for manufacturing of steel ingots with high purity |
| 07/28/1999 | EP0833949B1 Nozzle with a welded lance head for melt agitation |
| 07/28/1999 | CN1224063A Catalytic calcium ferrite dephosphorizing agent |
| 07/27/1999 | CA2163893C Production method for low carbon molten steel using vacuum degassing and decarburization treatment |
| 07/21/1999 | CN1223302A Desulfurizing agent for smelting iron and steel |
| 07/14/1999 | CN1222580A Carbon-free molten steel holding agent and its production |
| 07/13/1999 | US5922148 Ultra low sulfur superalloy castings and method of making |
| 07/08/1999 | WO1999034022A1 Refining method of molten iron and reduction smelting method for producing the molten iron |
| 07/08/1999 | CA2315031A1 Refining method of molten iron and smelting reduction method for producing molten iron |
| 07/06/1999 | US5919282 Process for vacuum refining molten steel and apparatus thereof |
| 07/01/1999 | DE19755803A1 Deoxidized cast iron melt is inoculated with a mixture of magnesium and silicon |
| 06/30/1999 | CN1221035A Additive-aluminium-manganese-titanium alloy used for steelmaking final deoxygenation and low-alloy steel |
| 06/29/1999 | US5917115 Apparatus for and method of treating liquid metal |
| 06/29/1999 | US5916827 Briquette includes carbon fines, and a powder of an element or oxide selected from iron, iron oxide, chromium, chromium oxide, nickel, nickel oxide in larger quantity being sufficient to suppress slippery nature of carbon |
| 06/23/1999 | EP0924305A1 Metallurgical reactor for treating of molten metal under reduced pressure |
| 06/23/1999 | CN1220316A Molten steel refining technology |
| 06/22/1999 | CA2256249A1 Metallurgical reactor for reduced-pressure processing of liquid metal |
| 06/17/1999 | WO1999029915A1 Method and oxygen lance for injecting gases into a metallurgical tank |
| 06/17/1999 | DE19755876A1 Verfahren und Blaslanze zum Einblasen von Gasen in metallurgische Gefäße A method and blowing lance for blowing gases into metallurgical vessels |
| 06/17/1999 | CA2312775A1 Method and oxygen lance for injecting gases into a metallurgical tank |
| 06/16/1999 | EP0922776A1 Process and apparatus for the injection of at least one additive to a molten metal |
| 06/16/1999 | EP0922515A1 Device for automatically discharging dross from a deslagging trough |
| 06/16/1999 | CN1219600A High-plasticity and high-tenacity rare earth alloy and wire or rod made of said alloy |
| 06/16/1999 | CN1043661C Process for smelting titanium steel and steel obtained |
| 06/15/1999 | US5911946 Snorkel for a degassing vessel |
| 06/09/1999 | EP0921201A1 Reduced pressure smelting furnace |
| 06/09/1999 | CN1218839A Titanium sedative steel with good surface character and its producing method |
| 06/02/1999 | CN1217954A Coherent jet injector lance |
| 05/26/1999 | EP0918093A1 Coherent jet injector lance |
| 05/26/1999 | EP0673442B1 Flow control device for the suppression of vortices |
| 05/26/1999 | CN1217754A Reduced pressure smelting furnace |
| 05/19/1999 | EP0916740A1 Vacuummetallurgical Vessel |
| 05/19/1999 | EP0915995A1 Multipurpose lance |
| 05/19/1999 | EP0666331B1 Steel containing ultrafine oxide inclusions dispersed therein |
| 05/14/1999 | WO1999023264A1 Method and device for controlling the formation of foamed slag in an arc furnace |
| 05/11/1999 | US5902375 Method of melting tinned iron scrap |
| 05/11/1999 | US5902374 Charging molten steel into ladle, dipping open end of vacuum vessel into melt, maintaining vacuum, blowing stirring gas from bottom of ladle, blowing decarburizing oxygen gas from lance inserted into vacuum vessel to form cavity on surface |
| 05/11/1999 | US5902372 Process and apparatus for processing a shredder light fraction in a melt |
| 05/06/1999 | EP0913487A1 Method for vacuum/reduced-pressure refining and facility for vacuum/reduced-pressure refining |
| 05/06/1999 | DE19748389A1 Unit for blowing solids into metal melts in metallurgical plants |
| 05/05/1999 | CN1215759A Apparatus for electrolysis deoxidation of solid electrolyte |
| 05/05/1999 | CN1215757A Al-Fe alloy for deoxidation of molten steel |
| 05/05/1999 | CN1043249C Process for production of compound deoxidizer of Si-Al-Ba-Fe alloy in one-step in blast furnace |
| 04/29/1999 | DE19803598C1 Soft magnetic iron-nickel alloy for relay armatures and yokes |
| 04/28/1999 | CN1215086A Agent for refining and heat-insulating of molten steel surface and its preparation process |
| 04/21/1999 | EP0909942A1 Device for aspiration of a gas sample from a process-gas enclosure under vacuum |
| 04/14/1999 | CN1213705A Compounded carbon-silicon-manganese-barium-aluminium alloy blocks |
| 04/13/1999 | US5894009 Vacuum tight reaction vessel for steel processing with a packing gland |
| 04/07/1999 | EP0906960A1 Titanium killed steel sheet and method |
| 03/31/1999 | CN1042750C Method for producing ultra low-carbon duriron |
| 03/31/1999 | CN1042747C Producing method for continuous casting quasiboiling carbon welding rod steel |
| 03/30/1999 | US5888458 Melting furnace of metals and melting method thereof |
| 03/29/1999 | CA2248464A1 Titanium killed steel sheet and method |
| 03/24/1999 | EP0842303B1 Oxygen lance head for treating molten masses |
| 03/24/1999 | EP0832301B1 Process for post-combustion of reaction gases produced during the vacuum processing of steel and apparatus for carring out the process. |
| 03/24/1999 | CN1212022A Method of vacuum decarburization refining of molten steel and apparatus therefor |
| 03/24/1999 | CN1211479A Mould pressing powder for continuous casting and continuous casting method |
| 03/24/1999 | CN1042650C Smelting method of aluminium killed steel for steel sheet |
| 03/23/1999 | US5885325 Process and apparatus for the manufacture of steel |