| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 06/29/2000 | WO2000037688A1 Method for denitriding molten steel during its production |
| 06/29/2000 | CA2356370A1 Method for denitriding molten steel during its production |
| 06/28/2000 | EP1012124A4 Insulation material |
| 06/28/2000 | EP1012124A1 Insulation material |
| 06/28/2000 | CN1258321A Method and article for introducing denitrogenizing flux into molten metal |
| 06/21/2000 | EP1010765A1 Desulfuring agent |
| 06/21/2000 | DE19857733A1 Entschwefelungsmittel Desulfurization |
| 06/20/2000 | US6077326 Steel additive for processing molten steel |
| 06/20/2000 | US6077324 Decarburizing and dephosphorizing a first melt of an iron carrier in an electric arc furnace, removing slag, adjusting alloy content of remaining phosphorus slag-free melt by treating with oxygen and inert gas with alloy carriers |
| 06/15/2000 | WO2000034535A1 Method for the removal of nitrogen in steel melts |
| 06/15/2000 | WO2000034534A1 Cored wire for treating molten metal and method of manufacture and use thereof |
| 06/15/2000 | WO2000034533A2 Method for removing nitrogen from steel melts |
| 06/15/2000 | WO2000034532A1 Reduction of chromium content in slag during melting of stainless steel in electric arc furnaces |
| 06/15/2000 | DE19856073A1 Verfahren zur Entstickung von Stahlschmelzen Process for nitrogen removal from molten steel |
| 06/15/2000 | CA2354006A1 Reduction of chromium content in slag during melting of stainless steel in electric arc furnaces |
| 06/14/2000 | CN1053473C Method and apparatus for producing metal and metal alloy |
| 06/07/2000 | EP1006208A1 Steel for thin sheet excellent in workability and method for deoxidation thereof |
| 05/31/2000 | EP0691411B1 Process for the continuous refining of metal and a facility for carrying out said process |
| 05/31/2000 | CN1254763A Desulfurizing method and equipment by co-stirring of machine and gas |
| 05/31/2000 | CN1053015C Gas blowing-in nozzle of molten metal and its application method |
| 05/30/2000 | US6068676 Stain-resistant, acid-resistant and heat-resistant high-grade steels of high purity and low gas content produced by melting metal charge in a crucible of specific volume, alloying, refining, chemically reducing and controlling process gases |
| 05/24/2000 | EP1002881A4 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 05/24/2000 | EP1002881A1 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 05/24/2000 | CN2379483Y External furnace desulfurizing device for magnesium based iron melt for core-spun wire |
| 05/24/2000 | CN1254019A Ladle finer reduction foaming agent |
| 05/24/2000 | CN1253921A Agglomeration method of steel slag |
| 05/18/2000 | CA2290068A1 Dense slag-deoxidizing briquette |
| 05/17/2000 | CN2378399Y Inactivate granular magnesium |
| 04/27/2000 | WO2000023627A1 Additive composition for use in steel making and method for making special steel using the same |
| 04/26/2000 | CN2375940Y Riveted oxygen blow pipe |
| 04/26/2000 | CN2375641Y Iron melt pretreatment spray gun |
| 04/25/2000 | US6053960 Metal sheath over core with lock seam |
| 04/20/2000 | DE19856050C1 Process for reducing the nitrogen content in a steel melt comprises pretreating the melt with ammonia before being degassed |
| 04/19/2000 | EP0994196A1 Method of solidifying steel-making slag and material produced by the method |
| 04/19/2000 | CN1251139A Pressure converter steel making method |
| 04/19/2000 | CN1250813A Method for reforming slags system of smelting steel with low-Si molten iron or semisteel by using slag inclusion of converter as slag modifier |
| 04/18/2000 | US6051049 Useful as synthetic slag covering for molten iron or steel, as well as in the foaming slag practice, as backfilling material for spaces between safety lining and working lining of ladle, as major component for blend from which are made pellets or |
| 04/18/2000 | CA2237139C Process and apparatus for backing-up or supplementing a gas supply |
| 04/12/2000 | CN1250105A Stainless steel refining agent and its usage in smelting stainless steel |
| 04/11/2000 | US6049559 Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus |
| 04/06/2000 | WO2000018700A1 Unburned carbon-containing refractory material and vessel for molten metal |
| 04/05/2000 | EP0795037B1 Equipment for treatment in molten cast iron baths with reaction materials having a low or high production of gas |
| 04/05/2000 | CN1051113C Low silicon content aluminium-calcium slag and its making method |
| 03/29/2000 | EP0989099A1 Apparatus for refining high temperature molten materials under reduced pressure |
| 03/29/2000 | CN2371196Y Equipment for desulfurating of molten iron by single blasting gasified granular magnesium |
| 03/28/2000 | US6042633 Arranging blow-in opening within a refractory lining of reaction vessel; introducing an air stream, comprised of hot air counter to the flow direction of reaction gases via blow-in opening into reaction vessel |
| 03/28/2000 | CA2160621C Method of producing molten aluminum-killed steel for thin steel sheet |
| 03/28/2000 | CA2009766C Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure |
| 03/22/2000 | EP0714989B1 Steel manufacturing method using converter dephosphorisation |
| 03/16/2000 | WO2000014287A1 Method for the production of a bulk of molten metal, a metallurgical product, and use of such a product |
| 03/16/2000 | WO2000014285A1 A direct smelting process |
| 03/15/2000 | CN1050387C Method for making Ni alloyed iron or nickel alloyed steel |
| 03/09/2000 | WO2000012768A1 Simple ladle refining method |
| 03/09/2000 | WO2000012767A1 Method for producing a metal melt and corresponding multfunction lance |
| 03/08/2000 | EP0984072A1 Oxide dispersion steel |
| 03/07/2000 | US6033621 Oxygen lance head for treating molten masses |
| 03/02/2000 | WO2000011494A1 Measuring the thickness of materials |
| 03/02/2000 | WO2000011227A1 Elongated product used for desulphurization of a steel bath |
| 02/23/2000 | CN1245219A Technology for making compound B-Mg balls and its usage |
| 02/23/2000 | CN1245097A Process for preparing metal magnesium particles of coated layer |
| 02/17/2000 | WO2000008216A1 Apparatus and method for the secondary refinement of metals |
| 02/17/2000 | CA2305741A1 Apparatus and method for the secondary refinement of metals |
| 02/10/2000 | DE19835513C1 Method and apparatus for treating slag which is not yet solidified, with a treatment substance fed into the slag by means of a filled wire which is perforated directly before its entry into the slag |
| 02/09/2000 | EP0772695B1 Gas flushing device in the blowpipe of a vacuum degassing vessel |
| 02/09/2000 | CN1243883A Composite Si-B-Al-Ca-Fe deoxidant and its preparing process |
| 02/03/2000 | DE19835213C1 Filled wire for introduction of various materials into metal melts has a hollow interior whose cross section at the constrictions is deformed and/or narrowed to achieve compaction of the filler material |
| 02/02/2000 | CN1243031A Rotor for treating liquid |
| 02/01/2000 | US6019938 High ductility very clean non-micro banded die casting steel |
| 01/27/2000 | WO2000003821A1 Method and device for the continuous degassing of molten metals |
| 01/26/2000 | EP0974675A1 Pressure converter steel making method |
| 01/20/2000 | DE19832701A1 Converter steelmaking process comprises taking the deoxidizing agent burn-off into account for precise calculation of the optimal tapping temperature for subsequent process steps |
| 01/19/2000 | CN1241637A Compound scorifying agent |
| 01/12/2000 | CN1048285C Method for making ultralow carbon cold-rolled steel plate |
| 01/11/2000 | CA2145360C Gas purging means for wall-side installation in metallurgical melting vessels |
| 01/05/2000 | EP0968312A1 Method for feeding granular solids into metal melts |
| 01/05/2000 | EP0857222B1 Process for decarbonising a high-chromium steel melt |
| 01/05/2000 | EP0646184B1 Improved method of desulfurization in vacuum processing of steel |
| 01/05/2000 | DE19819114C1 Feuerfester Kanal mit Außenisolierung und Verfahren zur Fugenabdichtung Fireproof channel with external insulation and method for joint sealing |
| 01/04/2000 | US6010658 Raising and lowering means which move independently |
| 12/29/1999 | WO1999067437A1 Steel wire rod and method of manufacturing steel for the same |
| 12/29/1999 | CN1239741A Molten iron desulfurizing process using magnesium grains outside furnace |
| 12/23/1999 | DE19827354A1 Production of alloy steels with improved control |
| 12/22/1999 | CN1239144A Si-Ba-Mg-Fe alloy for deoxidizing in smelting steel |
| 12/22/1999 | CN1047631C Process and appts. for mfg. of steel from iron carbide |
| 12/16/1999 | WO1999064637A1 Melting method and device using orientable multipurpose lance/burner units |
| 12/16/1999 | CA2334392A1 Melting method and device using orientable multipurpose lance/burner units |
| 12/15/1999 | EP0964065A1 Double lance burner/injection device with orientable lance units and melting method using same |
| 12/15/1999 | EP0963363A1 Use of a wire mesh |
| 12/09/1999 | DE19837149A1 Applying a granular material, in particular, a slag removal material to the surface of a metal melt bath |
| 12/08/1999 | CN2352542Y Mechanical, gaseous composite agitation type desulfurising apparatus |
| 12/08/1999 | CN1047206C Method and apparatus for controlled turbulent purging of open containers |
| 12/01/1999 | CN1046968C Method for direct use of chromite ore in production of stainless steel |
| 11/30/1999 | US5993510 Process for working up combustion residues |
| 11/30/1999 | US5993508 Briquette as an additive for metallurgic purposes comprising silicon-containing residues, and process for its production |
| 11/25/1999 | WO1999060174A1 Water-cooled vessel for vacuum processing of liquid steel |
| 11/25/1999 | WO1999060173A1 Method for integrated desulfurizing of pig iron melt and steel melt |
| 11/25/1999 | CA2332909A1 Method for integrated desulfurizing of pig iron melt and steel melt |
| 11/24/1999 | CN1046764C Decarburizing and refining method of Cr-containing molten steel |
| 11/18/1999 | DE19822159A1 Vessel for vacuum treatment of liquid steel |
| 11/18/1999 | DE19820730A1 Agent for treating pig iron, cast iron, and similar melts |