| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 02/26/1997 | CN1143680A Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 02/20/1997 | WO1997006394A1 Metal fusion furnace and metal fusing method |
| 02/19/1997 | CN1143060A Magnesio-alumino-spinel high temperature coating oxygen blowing tube |
| 02/18/1997 | US5603749 Barrel-type degasser having single continuous diameter opening, wear resistance |
| 02/18/1997 | US5603373 Process for treating molten metal during a casting operation using a filter and filter for implementing the process |
| 02/13/1997 | WO1997005291A1 Process for vacuum refining of molten steel |
| 02/13/1997 | WO1997005290A1 Oxygen lance head for treating molten masses |
| 02/13/1997 | WO1997005289A1 Slag treatment |
| 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 | CN1141955A Aluminum-dregs feeding method for iron-steel metallurgy |
| 02/04/1997 | CA2097924C Bottom or wall structure for a metallurgical vessel |
| 01/29/1997 | EP0756012A1 Decarburization refining process for chromium-containing molten metal, and associated top blowing lance |
| 01/29/1997 | CN1141347A Multi-element alloy for deoxidising molten steel and alloying thereof |
| 01/29/1997 | CN1033918C Blowing lance suspension with integrated medium supply |
| 01/16/1997 | DE19529932C1 Lanzenkopf einer Blaslanze zur Behandlung von Schmelzen Lance head of a lance for treating melts |
| 01/14/1997 | US5593634 Gas treatment of molten metals |
| 01/09/1997 | WO1997000978A1 Process for the manufacture of a high carbon cobalt-chromium-molybdenum alloy |
| 01/09/1997 | WO1997000973A1 Nozzle with a welded lance head for melt agitation |
| 01/08/1997 | EP0752478A1 Method of refining molten metal |
| 12/12/1996 | WO1996039545A1 Method and apparatus for continuous in-line gas treatment of molten metals |
| 12/11/1996 | EP0747490A1 Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 12/11/1996 | EP0747305A1 Particulate material feeding apparatus and process |
| 12/10/1996 | US5582391 For controlling the flow of molten metal from a vessel |
| 12/10/1996 | CA2039598C Vacuum-suction degassing method and an apparatus therefor |
| 12/08/1996 | CA2178463A1 Particulate material feeding apparatus and process |
| 12/07/1996 | CA2176692A1 Direct use of sulfur bearing nickel concentrate in making ni alloyed stainless steel |
| 12/04/1996 | CN1137065A Smelting method of aluminium killed steel for steel sheet |
| 11/28/1996 | WO1996037633A1 Process for post-combustion of reaction gases produced during the vacuum processing of steel |
| 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 |
| 11/26/1996 | US5577549 Mold fluxes used in the continuous casting of steel |
| 11/21/1996 | WO1996036741A1 Vacuumtight reaction vessel for steel processing with a packing gland |
| 11/20/1996 | EP0742842A1 Gas treatment of molten metals |
| 11/20/1996 | CN1136085A Method and apparatus for vacuum degasifying liquid steel |
| 11/19/1996 | US5575829 Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 11/13/1996 | CN1135532A Manganese-keeping silicon-removing method at exterior of manganese-iron alloy furnace |
| 11/07/1996 | WO1996034711A1 Sliding gate valve |
| 11/07/1996 | CA2219232A1 Sliding gate valve |
| 11/06/1996 | CN1134984A Method for producing alloyed steels |
| 11/05/1996 | US5571307 Process and device for blowing oxygen over metal melts |
| 11/05/1996 | CA1338688C Oxygen injection lance |
| 10/23/1996 | CN1133892A Process for production of compound deoxidizer of Si-Al-Ba-Fe alloy in one-step in blast furnace |
| 10/22/1996 | US5567286 Apparatus for refining a low carbon steel melt |
| 10/22/1996 | US5566989 Solids pipeline having multiple rotary connectors |
| 10/22/1996 | US5566556 Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air |
| 10/17/1996 | WO1996032216A1 Mould fluxes for use in the continuous casting of steel |
| 10/17/1996 | CA2190747A1 Mould fluxes for use in the continuous casting of steel |
| 10/16/1996 | CN2237644Y Water-cooled oxygen gun for arc furnace |
| 10/10/1996 | WO1996031627A1 A method of producing metals and metal alloys |
| 10/09/1996 | CN1132796A Process for semlting titanium steel and steel obtained |
| 10/09/1996 | CN1132794A Decarburising and refining method of Cr-containing molten steel |
| 10/09/1996 | CN1032974C Method for smelting extremely low silicon high carbon stainless steel |
| 10/08/1996 | US5562753 Method and installation for producing molten steel from ferrous materials rich in carbonaceous materials |
| 10/03/1996 | WO1996030143A1 Method of fluid dispersion and apparatus therefor |
| 10/02/1996 | CN1132483A Purifying molten metal |
| 09/25/1996 | EP0733591A1 Methods of processing aluminium dross and aluminium dross residue into calcium aluminate |
| 09/25/1996 | EP0649478A4 Method for producing steel. |
| 09/24/1996 | US5558695 Process and unit for continuous metal refinement |
| 09/18/1996 | CN2235449Y Impregnation tube used in steel ladle refining |
| 09/18/1996 | CN1131202A Producing method for continuous casting quasi-boiling carbon welding rod steel |
| 09/18/1996 | CN1032823C Technology for smelting ultralow-carbon high-chromium alloyed steel by subaerated induction furnace |
| 09/12/1996 | WO1996027683A1 Apparatus and method for vacuum treating molten steel in a barrel degasser |
| 09/11/1996 | CN1032767C Silicon-barium-strontium-iron alloy used as steel liquid deoxidizing agent and its preparing process |
| 09/04/1996 | EP0729797A1 Device and process for automatic coupling of a casting ladle to one or more gas conduits |
| 09/04/1996 | CN1130212A Technology for dephospyhorizing and forced desulfurating in cupola |
| 08/28/1996 | CN1129741A Method and apparatus for decarbonizing granular iron of blast furnace |
| 08/21/1996 | CN1129462A Method for the disposal/recycling of gas cylinders containing filling material |
| 08/20/1996 | US5547489 Decarburizing steel with oxygen-containing gas at atmospheric pressure, blowing non-oxidizing gas under reduced pressure, adding reducing agent to reduce chromium oxides formed |
| 08/20/1996 | EP0691411A4 Process for the continuous refining of metal and a facility for carrying out said process |
| 08/14/1996 | CN1128803A Composite deoxidant Si-Al-Ba-Fe alloy prodn. method |
| 08/14/1996 | CN1032549C Additive for iron-base material |
| 08/08/1996 | DE19518900C1 After-burning reaction gases arising during vacuum treatment of steel |
| 08/08/1996 | DE19518361C1 Vacuum-tight reaction vessel with a stuffing box for steel processing |
| 08/07/1996 | EP0725151A1 Method and apparatus for refining molten metal |
| 07/31/1996 | EP0723487A1 Method of adjusting the composition of a molten metal such as steel, and plant for implementation thereof |
| 07/31/1996 | CN1128050A Steel manufacturing method using converter |
| 07/31/1996 | CN1127788A High calcium-silicon iron |
| 07/30/1996 | US5540753 Controlled blowing of gas mixture containing oxygen;overlapping holes |
| 07/24/1996 | EP0723022A1 Process for treating of metal melts by a treating gas being considerately cooled down under environment temperature |
| 07/24/1996 | CN1127303A Method for improving pretreating effect of melten iron in iron mixing trolley |
| 07/23/1996 | US5538534 Combined installation of a metal production unit and a unit for the separation of air gas |
| 07/23/1996 | US5538184 CO2 snow discharge apparatus |
| 07/17/1996 | EP0721990A1 Method for producing alloyed steels |
| 07/17/1996 | CN1126765A Composite carbon-iron alloy block and its prodn process |
| 07/16/1996 | CA1338456C Tri-level method and apparatus for post-melting treatment of molten steel |
| 07/11/1996 | WO1996021046A1 Method and equipment for treatment in molten cast iron baths with reaction materials having a low or high production of gas |
| 07/10/1996 | EP0720592A1 Process for the preparation of calcium aluminates from aluminum dross residues |
| 07/10/1996 | EP0561805B1 Method and device for the late addition of a particulate alloy during casting of liquid metal |
| 07/10/1996 | CN1126497A Method of manufacturing low carbon molten steel by vacuum degasification and decarbonization |
| 07/09/1996 | US5535235 Melting furnace having preheating vessel |
| 06/27/1996 | WO1996019591A1 Process and apparatus for the manufacture of steel from iron carbide |
| 06/19/1996 | CN1124780A Dephosphorising agent for iron and steel foam |
| 06/18/1996 | US5527381 Gas treatment of molten metals |
| 06/18/1996 | US5527374 Process for improving metal production in steelmaking processes |
| 06/18/1996 | CA1338397C Method for refining molten steel in a vacuum |
| 06/12/1996 | CN2228914Y Straight tube imbeded bottom-blown permeability plug |
| 06/12/1996 | CN1124182A Development and production for multifunctional molten iron covering agent |
| 06/06/1996 | WO1996017093A1 Method of refining molten metal |
| 06/05/1996 | EP0714995A1 Method for making titanium-containing steels and steels thus made |
| 06/05/1996 | EP0714989A1 Steel manufacturing method using converter |