| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 08/26/1998 | CN1191577A Vacuumtight reaction vessel for steel processing with packing gland |
| 08/25/1998 | CA2106616C Shape steel material having high strength, high toughness and excellent fire resistance and process for producing rolled shape steel of said material |
| 08/20/1998 | WO1998021373A3 Process for reducing fume emissions during molten metal transfer |
| 08/19/1998 | EP0859063A1 Process for mnaufacturing and use of an additive containing titaniumdioxide |
| 08/19/1998 | CN1190996A Process for post-combustion of reaction gases produced during the vacuum processing of steel |
| 08/12/1998 | EP0857222A1 Process for decarbonising a high-chromium steel melt |
| 08/12/1998 | CN1190134A Low-aluminium ferrosilicon containing strontium and its production process |
| 08/12/1998 | CN1190133A Melting of Ni laterite in making Ni alloyed iron or steel |
| 08/06/1998 | DE19735053C1 Unit for introduction of gases into metal melts |
| 08/04/1998 | CA2099781C Tuyere arrangement for the introduction of agents into a molten bath and method of operating such a tuyere arrangement |
| 07/29/1998 | CN1188809A Cold pressing flake iron ball cooling, slag melting agent and making method thereof |
| 07/28/1998 | CA2084396C Method of decarburizing molten metal in the refining of steel using neural networks |
| 07/23/1998 | WO1998031841A1 Method and installation for ladle treatment of steel |
| 07/23/1998 | WO1998031646A1 Use of a wire mesh |
| 07/23/1998 | DE19701806A1 Verwendung eines Drahtgeflechtes Using a wire mesh |
| 07/23/1998 | CA2278473A1 Use of a wire mesh |
| 07/22/1998 | CN1188513A Nozzle with welded lance head for melt agitation |
| 07/22/1998 | CN1188154A Formula of low silicon content aluminium-calcium slag and its making method |
| 07/15/1998 | EP0853130A1 Process and installation for improving tapping of steel from a melting furnace into a ladle |
| 07/15/1998 | CN1187542A Pollution-free deoxidizing body |
| 07/09/1998 | WO1998029575A1 Method for vacuum/reduced-pressure refining and facility for vacuum/reduced-pressure refining |
| 07/08/1998 | CN1186864A Protective slag for continuous super low carbon steel casting |
| 06/30/1998 | CA2032020C Method for producing ultra clean steel |
| 06/25/1998 | WO1998027237A1 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 06/25/1998 | DE19653747A1 Unit production method for introduction of gases into a metal=melt |
| 06/24/1998 | CN1185813A Process for producing aluminum-killed steel free of cluster |
| 06/23/1998 | US5769923 Decarburization refining process for chromium-containing molten metal and associated top blowing lance |
| 06/18/1998 | WO1998025717A1 Basic tundish flux composition for steelmaking processes |
| 06/18/1998 | CA2246257A1 Basic tundish flux composition for steelmaking processes |
| 06/17/1998 | EP0714451B1 Method for the disposal/recycling of gas cylinders containing filling material |
| 06/17/1998 | CN1184718A Process for producing steel wire being used to produce tyre steel cord |
| 06/10/1998 | EP0846778A1 Melting of nickel laterite and sulfur-bearing Ni concentrate in making Ni-alloyed iron and stainless steel |
| 06/09/1998 | US5762682 Heat treatment and sealing with deaeration |
| 06/04/1998 | CA2221644A1 Recovering ni units for stainless steel by sequentially smelting ni laterite and ni sulfite concentrate in an iron bath |
| 06/03/1998 | CN1183478A Excellent machining property steel and sheet steel by electric furnace-vacuum degasifying process, and mfg. method thereof |
| 05/28/1998 | WO1998022627A1 Method of vacuum decarburization/refining of molten steel and apparatus therefor |
| 05/27/1998 | EP0844310A1 Installation for deskulling the nuzzles of a vacuum treating vessel for steel melts |
| 05/22/1998 | WO1998021373A2 Process for reducing fume emissions during molten metal transfer |
| 05/22/1998 | CA2270949A1 Process for reducing fume emissions during molten metal transfer |
| 05/20/1998 | EP0842303A1 Oxygen lance head for treating molten masses |
| 05/20/1998 | EP0842302A1 Slag treatment |
| 05/19/1998 | US5753004 Heating molten metal under vacuum or low oxygen partial pressure to remove contaminants, adding slag-forming agents, heating with inert gas plasma to activate slag and remove residual contaminants |
| 05/14/1998 | DE19646738A1 Improved method and equipment for tapping steel from a melting furnace into a ladle |
| 05/13/1998 | CN1038347C Producing tech. of low hydrogen high nitrogen steel |
| 05/13/1998 | CA2220468A1 Method and device for improving tapping of liquid steel from a smelting furnace into a ladle |
| 05/12/1998 | US5749939 Oxidation of metalloid and carbon dissolved in bath mixture; discharging slag; decarburization |
| 05/12/1998 | US5749684 Particulate material feeding apparatus and process |
| 05/06/1998 | CN1181112A Method of producing metals and metal alloys |
| 05/06/1998 | CN1180752A Nitrogen-oxygen mixed blowing iron melt pretreatment method |
| 04/28/1998 | US5743938 Oxygen gas and-or inert gas is blown to bottom of steel bath |
| 04/22/1998 | EP0803579A4 Process for the vacuum refining of metal and associated device |
| 04/16/1998 | WO1998015664A1 Molten steel smelting apparatus for producing ultra-low carbon steel and a smelting method using this apparatus |
| 04/15/1998 | EP0835943A1 Under bell for the CAS-OB process |
| 04/15/1998 | CN2278916Y Built-up oxygen blast refractory tube |
| 04/15/1998 | CN1178839A Molten iron deslagging dephosphorizing technology |
| 04/15/1998 | CN1038048C Steel containing ultrafine oxide inclusions dispersed therein |
| 04/14/1998 | US5738823 Meltdown apparatus |
| 04/09/1998 | DE19650498A1 Molten steel vacuum ladle treatment process |
| 04/08/1998 | EP0834582A2 Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus |
| 04/08/1998 | EP0834578A1 Process for production of steel qualities having a silicon content of equal or less than 0,08 weight-percent |
| 04/08/1998 | EP0833949A1 Nozzle with a welded lance head for melt agitation |
| 04/01/1998 | EP0832304A1 Method and apparatus for continuous in-line gas treatment of molten metals |
| 04/01/1998 | EP0832301A1 Process for post-combustion of reaction gases produced during the vacuum processing of steel |
| 04/01/1998 | CN1037899C Mould-casting compound slag without carburation |
| 03/31/1998 | US5733358 Process and apparatus for the manufacture of steel from iron carbide |
| 03/25/1998 | CN1177383A Method and equipment for treatment in molten cast iron baths reaction material having a low or high production of gas |
| 03/18/1998 | EP0829550A1 Method of processing incineration residues in a multi-stage metal bath converter |
| 03/18/1998 | EP0829546A1 Process for producing aluminum-killed steel free of cluster |
| 03/18/1998 | CN1176311A Ferric scale fluxing and dissolving agent and its preparation |
| 03/18/1998 | CN1037783C Method of producing low carbon molten steel by vacuum degasification and decarbonization |
| 03/17/1998 | US5728348 Ladle cover for vacuum refining process |
| 03/17/1998 | CA2215262A1 Process for working up combustion residues |
| 03/11/1998 | CN1175640A Slag treating agent capable of improving oxygen and sulfur contents in steel |
| 03/10/1998 | CA1339703C Method for cleaning molten metal |
| 03/04/1998 | EP0825909A1 Sliding gate valve |
| 03/03/1998 | US5723055 Nozzle assembly having inert gas distributor |
| 02/24/1998 | US5720830 Adding solid carbide particles to liquid ferrous alloy, solidifying |
| 02/24/1998 | CA2086193C Method of refining of high purity steel |
| 02/18/1998 | CN1037455C Method of decarburizing molten metal in the refining of steel using neural networks |
| 02/11/1998 | CN1172861A Calcium-base ternary alloy |
| 02/11/1998 | CN1037359C Regenerating process for high-temp. alloy furnace pipes |
| 02/10/1998 | US5716426 Separation of aluminum from dross; heating with calcium compound |
| 02/03/1998 | US5713983 Degasification; comminution |
| 01/28/1998 | CN1171445A Oxygen steelmaking |
| 01/21/1998 | EP0819772A1 Process and apparatus for grain refining and alloying of alloys |
| 01/21/1998 | EP0819182A1 A method of producing metals and metal alloys |
| 01/21/1998 | CN1170763A Method for producing refining flux in steel making and use |
| 01/20/1998 | US5709834 Device for removing gas and impurities from the molten aluminum |
| 01/14/1998 | CN1170440A Process and apparatus for manufacture of steel from iron carbide |
| 01/07/1998 | CN1169475A Heat-insulation molten steel heat-insulating agent |
| 01/02/1998 | DE19629099A1 Ceramic product production |
| 12/30/1997 | US5702502 Method for direct use of chromite ore in the production of stainless steel |
| 12/18/1997 | WO1997047775A1 Blowpipe for degassing plants |
| 12/17/1997 | CN1167837A Method for direct use of chromite ore in production of stainless steel |
| 12/16/1997 | CA2106266C Refractory shape steel material containing oxide and process for producing rolled shape steel of said material |
| 12/10/1997 | CN1167157A Method for making ultralow carbon cold-rolled steel plate |
| 12/03/1997 | EP0810190A1 Well brick of vessel for molten metal |
| 12/02/1997 | US5693120 Production method for low carbon molten steel using vacuum degassing and decarburization treatment |
| 11/27/1997 | WO1997044497A1 Pressure vessel with adjustable conduit for feeding flowable materials and application to ironmaking in cyclone type smelt-reduction reactor |
| 11/26/1997 | CN1166198A Metal fusion furnace and metal fusing method |