| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 03/23/1999 | CA2143712C Steelmaking degassing method and apparatus |
| 03/18/1999 | DE19817590C1 Combination lance for treatment of metallurgical melts |
| 03/16/1999 | US5882583 precast module leveling assembly for a metallurgical vessel |
| 03/16/1999 | US5882377 Process for smelting reduction of chromium ore |
| 03/10/1999 | EP0900853A1 Rotary impeller for gas treatment of molten metals |
| 03/10/1999 | EP0900850A2 Heat-treated steels with optimized toughness |
| 03/10/1999 | CN1042444C Chromium ore smelting reduction process |
| 03/09/1999 | US5879616 Metallurgical vessel and method of using the same |
| 03/09/1999 | US5879479 Method of making ultra low-carbon steel |
| 03/03/1999 | EP0899041A1 Mold powder for continuous casting and method of continuous casting using this powder |
| 03/03/1999 | CN1209459A Multifunctional synthesized slag for refining furnace |
| 02/25/1999 | WO1999009232A1 Metallurgical vessel |
| 02/24/1999 | CN1209171A Process for preparing intermediates for synthesis of antifungal agents |
| 02/24/1999 | CN1208772A Art for refining bearing steel processed by barium series alloy treatment |
| 02/24/1999 | CN1042239C Method for increasing volume of melted iron mixing trolley for improving pretreatment of melted iron effect |
| 02/17/1999 | CN1042143C Melting furnace with gas injection |
| 02/09/1999 | USRE36082 Using negative pressure; for removing bubbles from molten glass |
| 02/09/1999 | US5868817 Efficiently dephosphorizing, decarbonizing, and/or desulfurizing; adjusting the amount of flux to be charged, the amount of bottom-blown gas admitted and the bottom-blowing agitation power |
| 02/09/1999 | US5868816 Smelting of high-purity steels having extremely low contents of carbon, nitrogen or oxygen. |
| 02/03/1999 | CN1206746A Technology for producing aluminium wire used in steelmaking deoxidation |
| 02/02/1999 | US5865876 Multipurpose lance |
| 02/02/1999 | US5865206 Process and apparatus for backing-up or supplementing a gas supply system |
| 01/27/1999 | EP0832304B1 Method and apparatus for continuous in-line gas treatment of molten metals |
| 01/27/1999 | CN1206436A Producing stainless steel in parallel operated vessels |
| 01/27/1999 | CN1041843C Steel manufacturing method using converter |
| 01/26/1999 | US5863490 Gas blast nozzle for molten metal and method of using the same |
| 01/20/1999 | EP0891431A1 Desulphurising calcium carbide blend |
| 01/20/1999 | EP0753077B1 Dc-heated metallurgical vessel with base electrode |
| 01/07/1999 | EP0889138A1 Process and installation for for production of high-chromium containing steels and/or alloys in an electric-arc-converter |
| 01/07/1999 | EP0646183B1 Process and device for blowing oxygen over metal melts |
| 01/06/1999 | CN1204372A Molten steel smelting apparatus for producing ultra-low carbon steel and smelting method using this apparatus |
| 01/06/1999 | CN1203827A Process and apparatus for backing-up or supplementing gas supply system |
| 12/30/1998 | EP0887608A1 Precast module leveling assembly for a metalurgical vessel |
| 12/30/1998 | EP0887131A1 Improved metallurgical vessel and method of using the same |
| 12/30/1998 | CN1203634A Method and deivce for decarburizing molten steel |
| 12/30/1998 | CN1203543A Nozzle assembly having inert gas distributor |
| 12/30/1998 | CN1041438C Base electrode of DC heated metallurgical vessel |
| 12/30/1998 | CA2242251A1 Method and apparatus for producing high chromium content steels and/or ferroalloys in an electric arc converter |
| 12/29/1998 | US5853659 Steel, steel sheet having excellent workability and method of producing the same by electric furnace-vacuum degassing process |
| 12/29/1998 | US5853658 Gas purging device in the blowpipe of a degassing vessel |
| 12/22/1998 | US5851262 Method of refining molten metal |
| 12/17/1998 | DE19748310C1 Controlling formation of foam slag in an electric arc furnace |
| 12/16/1998 | EP0884395A1 Agent for fluoride-free treatment of steel melts in the casting ladle, process for its manufacture and its use |
| 12/16/1998 | CN2300655Y Core cabling wire |
| 12/16/1998 | CN1202207A Slag detecting apparatus and method |
| 12/16/1998 | CN1202122A Fireproof moulding plates with gas ducts |
| 12/16/1998 | CN1201833A Low alkaline composite slag for steel liquid improvement out of furnace |
| 12/15/1998 | US5849245 Well brick of vessel for molten metal |
| 12/11/1998 | CA2239268A1 Precast module leveling assembly for a metallurgical vessel |
| 12/11/1998 | CA2238855A1 Improved metallurgical vessel and method of using the same |
| 12/10/1998 | DE19745808C1 Apparatus for sucking away a measuring gas from a process gas chamber under vacuum |
| 12/09/1998 | CN1201072A Aluminium-contained premelting slag and preparation method therefor, and molten steel desulfurizer and purifier containing same |
| 12/09/1998 | CN1041113C Method and apparatus for decarbonizing granular iron of blast furnace |
| 12/08/1998 | US5846481 Molten aluminum refining apparatus |
| 12/03/1998 | WO1998054369A1 Method and article for introducing denitrogenizing flux into molten metal |
| 12/03/1998 | CA2292591A1 Method and article for introducing denitrogenizing flux into molten metal |
| 12/02/1998 | EP0881304A1 Method of vacuum decarburization/refining of molten steel and apparatus therefor |
| 12/02/1998 | EP0720592B1 Process for the preparation of calcium aluminates from aluminum dross residues |
| 12/02/1998 | CN1200769A Method and equipment for refining by vacuum or reduced pressure method |
| 12/02/1998 | CN1200768A Process for decarbonising high-chromium steel melt |
| 11/25/1998 | EP0879896A1 Molten steel smelting apparatus for producing ultra-low carbon steel and a smelting method using this apparatus |
| 11/19/1998 | WO1998051826A1 Apparatus for and method of treating liquid metal |
| 11/18/1998 | EP0877823A2 Producing stainless steels in parallel operated vessels |
| 11/18/1998 | CN1199099A Desulfurizing slag modifier |
| 11/11/1998 | EP0877195A1 Process and apparatus for backing-up or supplementing a gas supply system |
| 11/11/1998 | CN1198525A Gunjet/burner for metal smelting furnace |
| 11/11/1998 | CN1198474A Ferro-aluminium manganese titanium alloy |
| 11/11/1998 | CN1198473A Ferro-gluminium-manganese-titanium alloy used as for final deoxidizing agent in steel-making and low alloy steel additives |
| 10/28/1998 | CN2295979Y Air supplying element of bottom of smelting furnace |
| 10/27/1998 | CA2118646C Process and additives for the ladle refining of steel |
| 10/21/1998 | CN1196473A Method for introducing gas into liquid pond |
| 10/21/1998 | CN1196395A Calcium-silicon compound deoxident and producing technology thereof |
| 10/20/1998 | US5823762 Coherent gas jet |
| 10/20/1998 | US5823221 Device and method for the automatic coupling of a teeming ladle to one or more gas pipes |
| 10/14/1998 | EP0870849A2 Tool for glass molding operations and method of manufacture thereof |
| 10/14/1998 | CN2294264Y Insertion type oxygen-blowing tube |
| 10/07/1998 | EP0868525A1 Process for preparing intermediates for the synthesis of antifungal agents |
| 10/01/1998 | WO1998042879A1 Pressure converter steel making method |
| 10/01/1998 | WO1998042630A1 Insulation material |
| 10/01/1998 | CA2285079A1 Insulation material |
| 09/30/1998 | EP0866771A1 Iron sulphide compositions |
| 09/30/1998 | EP0866739A1 Nozzle assembly having inert gas distributor |
| 09/30/1998 | EP0819182A4 A method of producing metals and metal alloys |
| 09/29/1998 | US5814125 Molten metals |
| 09/24/1998 | WO1998041658A1 Method for feeding granular solids into metal melts |
| 09/23/1998 | EP0866140A1 Coherent gas jet |
| 09/23/1998 | EP0866139A1 Lance/burner for molten metal furnace |
| 09/23/1998 | EP0866138A1 Method for introducing gas into a liquid |
| 09/23/1998 | CN1193553A Coherent gas jet |
| 09/18/1998 | CA2232212A1 Coherent gas jet |
| 09/16/1998 | CN1039832C Dephosphorising machine for iron and steel foam |
| 09/16/1998 | CN1039831C Polyalloy for desoxy and alloying in steel-making |
| 09/16/1998 | CN1039828C Method for disposal/recycling of gas cylinders containing filling material |
| 09/15/1998 | US5809055 Metallurgical vessel heated by direct current and having a bottom electrode |
| 09/09/1998 | EP0862506A2 Fireproof moulding plates with gas ducts |
| 09/03/1998 | WO1998038343A1 Reduced pressure smelting furnace |
| 09/02/1998 | EP0861337A1 Method and device for decarburizing steels melts |
| 08/26/1998 | EP0860507A1 Ultra low sulfur superalloy castings and method of making |
| 08/26/1998 | EP0860226A1 Bottom-blown gas blowing apparatus for a molten metal ladle |
| 08/26/1998 | EP0859867A1 Slag detecting apparatus and method |