| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 10/26/1993 | US5257280 Gas introducing and stirring apparatus of metallurgical vessel |
| 10/26/1993 | CA1323494C Process for heating molten steel contained in a ladle |
| 10/21/1993 | DE4221266C1 Verfahren und Vorrichtung zum Aufblasen von Sauerstoff auf Metallschmelzen Method and apparatus for blowing oxygen on the molten metal |
| 10/20/1993 | EP0565791A1 Molten metal filter |
| 10/20/1993 | EP0565763A1 Agent and process for calcium treating of steel |
| 10/20/1993 | EP0334915B1 Process for heating molten steel contained in a ladle |
| 10/19/1993 | US5254307 Melting, equilibrating in controlles nitrogen atmosphere |
| 09/30/1993 | DE4210179A1 Additive mixt. for smelting and refining of steel and pig iron@ - contg. deoxidising agent, filler and refining agent, and gives improved mechanical properties and reduced allowing and deoxidising agent requirement |
| 09/30/1993 | DE4209964A1 Prodn. system for metals and metal alloys of high purity under vacuum conditions - has cooled melting crucible and cooled hopper for guiding pouring jet, crucible consisting of several metallic palisade type segments separated from each other by slits |
| 09/29/1993 | EP0561805A1 Device for the late addition of a particulate alloy during casting of liquid metal. |
| 09/29/1993 | EP0462988B1 Process and device for handling metals in a vacuum |
| 09/22/1993 | EP0560834A1 Bottom or wall structure for a metallurgical vessel. |
| 09/15/1993 | CN1022115C Process and apparatus for treatment of metal in vacuum |
| 09/08/1993 | EP0559589A1 Cored wire with a plastic sheath for additions to metal baths |
| 09/08/1993 | CN1022049C Method of separating stainless steel peel and grinding bits and desulphating method thereof |
| 09/07/1993 | US5242485 Degassing |
| 09/07/1993 | US5242484 Metallurgical process plant for melting and casting |
| 09/07/1993 | CA1321882C Method of continuously casting lead-bearing steel |
| 09/02/1993 | WO1993017132A1 Process for improving metal production in iron and steelmaking processes |
| 09/02/1993 | WO1993017131A1 Process for desulphurising irons melts with minimal slag production and suitable device therefor |
| 09/02/1993 | DE4206091A1 Verfahren zur entschwefelung von eisenschmelzen bei minimalem schlacke-anfall und eine dafuer geeignete vorrichtung A process for the desulfurization of iron melts with minimal slag attack and a device suitable |
| 09/02/1993 | CA2130996A1 A method for desulfurizing iron melts with minimal slag formation and an apparatus for carrying it out |
| 09/01/1993 | CN1075753A Composite deoxidiser of Al-Mn-Fe |
| 08/31/1993 | US5240492 Metallurgical fluxes |
| 08/25/1993 | EP0556576A1 Method and apparatus for continuous vacuum degassing of molten materials |
| 08/25/1993 | CN2140903Y High-temp oxygen blow-pipe |
| 08/10/1993 | CA1321075C Additive for promoting slag formation in steel refining ladle |
| 08/04/1993 | CN1074943A Blowing lance suspension with integrated medium supply |
| 07/28/1993 | EP0552440A2 Blowing lances suspension with integrated material supply |
| 07/28/1993 | CN1074712A Method of refining of high purity steel |
| 07/21/1993 | CN1074485A Tuyere arrangement for the introtion of agents into a molten bath and method of operating such a tuyere arrangement |
| 07/20/1993 | US5229063 Process for the treatment of steel-mill slag and apparatus for carrying it out |
| 07/20/1993 | US5228902 Adding a desulfuizing agent comprising calcium oxide, calcium fluoride and magnesium oxide and subjecting the steel to a vacuum dehydrogenation treatment |
| 07/14/1993 | CN2138129Y Rotary gas treatment for middle container |
| 07/14/1993 | CN1074244A Method of decarburizing molten metal in the refining of steel using neural networks |
| 07/14/1993 | CN1074153A Granular insulating agent and its production technology |
| 07/13/1993 | US5226946 Vacuum melting/casting method to reduce inclusions |
| 07/07/1993 | CN2137667Y Fringing-type top argon-blowing gun |
| 07/06/1993 | US5225156 Purity |
| 06/30/1993 | EP0548868A2 Method of refining of high purity steel |
| 06/30/1993 | EP0548117A1 Device for inserting and removing stopper bricks for metallurgical vessels. |
| 06/30/1993 | CN1073722A Compounding agent for cleaning molten steel and its application method |
| 06/22/1993 | US5221326 Method of producing ultra-low-carbon steel |
| 06/22/1993 | CA1319259C Tubular envelope composite product containing a compacted matter and serving for the treatment of liquid metals, and production process thereof |
| 06/16/1993 | EP0546351A2 Cored wire containing a passivated pyrophoric metal and its application |
| 06/09/1993 | EP0545379A1 Method of decarburizing molten metal in the refining of steel using neural networks |
| 06/02/1993 | CN1072726A Silicon-aluminum-barium-strontium-iron alloy for steel-deoxidizing and producing method thereof |
| 06/02/1993 | CN1021061C Nodularizing additive for casting high toughness nodular graphite cast iron |
| 06/01/1993 | US5215573 Treatment of melts in a ladle and apparatus for such treatment |
| 05/27/1993 | DE4138118A1 Melting-down and refining unit for steel - consists of two adjacent furnaces with lid mechanisms operated simultaneously, for melting down and refining-overheating the melt |
| 05/25/1993 | US5213779 Process for optimizing the removal of NOX and SOX from gases utilizing lanthanide compounds |
| 05/25/1993 | CA1318134C Method for transferring heat to molten metal, and apparatus therefor |
| 05/18/1993 | US5211743 Treatment of a melt with a gas and means therefor |
| 05/18/1993 | US5211218 Melting and casting plant chamber |
| 05/13/1993 | DE4136552A1 Dueseneinrichtung zum einleiten von medien in eine schmelze und verfahren zum betrieb dieser dueseneinrichtung Dueseneinrichtung to initiate of media in a melt and procedures for operation of this dueseneinrichtung |
| 05/12/1993 | EP0377578B1 Consumable lance |
| 05/12/1993 | CN2132581Y Ring-crack ventilation brick |
| 05/07/1993 | WO1993009255A1 Nozzle assembly for introducing fluids into a melt, and a method of operating the nozzle |
| 05/05/1993 | CN1071704A Aluminium, calcium oxide core-spun wire for metallurgy use |
| 04/29/1993 | WO1993008309A1 Device for the late addition of a particulate alloy during casting of liquid metal |
| 04/28/1993 | EP0539352A1 Method of disposing of organic and inorganic substances |
| 04/27/1993 | US5205856 Inoculation wire |
| 04/27/1993 | CA1316972C Apparatus for the thermal treatment of a metallic melt |
| 04/25/1993 | CA2081257A1 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/20/1993 | US5203909 Method and apparatus for slag free casting |
| 04/14/1993 | EP0536185A1 Liquid steel bath reheating method. |
| 04/14/1993 | CN1070948A Synthetic sweetening powder agnet |
| 04/13/1993 | US5202079 Means and method for determining the degree of wear of a gas injection device |
| 04/07/1993 | CN1070690A Method to make mud balls for dedusting steel-smelting converter |
| 04/06/1993 | CA1315543C Metallurgical tuyere and method of calibrating same |
| 04/06/1993 | CA1315541C Pneumatic steelmaking vessel and method of producing steel |
| 04/06/1993 | CA1315519C Continuous casting tundish and assembly |
| 03/31/1993 | CN1070426A Production of steel-smelting metal raw materials by use of pig iron solid decarbonization method |
| 03/30/1993 | US5198179 Gas injector |
| 03/30/1993 | US5198016 Product for the desulphurization of molten pig iron or steel based on coated magnesium |
| 03/30/1993 | CA1315327C Metallurgical vessel |
| 03/30/1993 | CA1315102C Apparatus for the introduction of reagents in powder form into a melting pan |
| 03/30/1993 | CA1315101C Sealing injection apparatus for injecting substances into molten metals |
| 03/27/1993 | CA2079118A1 Impeller for treating molten metals |
| 03/24/1993 | EP0533212A1 A free machining, deformed, solid steel product |
| 03/17/1993 | EP0532141A1 Degassing vessel for the treatment of liquid steel |
| 03/09/1993 | US5192488 Apparatus for heating molten in a ladle |
| 03/09/1993 | US5192016 Methods for manufacturing tubes filled with powdery and granular substances |
| 03/09/1993 | CA1314145C Apparatus for filtering molten scraps of metal for regeneration |
| 03/02/1993 | US5190577 Decarburization iron alloys in melts by injection of oxygen and carbon dioxide |
| 02/24/1993 | CN1069287A Cast iron desulphurising agent and desulfurization process |
| 02/23/1993 | US5188661 Used for desulfurization of iron and steel |
| 02/03/1993 | EP0525591A1 Plug for molten metal refining vessel |
| 02/03/1993 | CN1068595A Temp. raising agent for top-blast steel -smelting |
| 01/20/1993 | EP0523167A1 Compositions and methods for synthesizing ladle slags, treating ladle slags, and coating refractory linings |
| 01/20/1993 | CN1068148A Compound spheroidizing inoculant |
| 01/20/1993 | CN1068146A Multiple combined deoxidizing agent |
| 01/12/1993 | US5178818 Metallurgical furnace installation |
| 12/30/1992 | EP0520085A1 Method of producing ultra-low-carbon steel |
| 12/23/1992 | CN2125589U Inserting structure oxygen blowing tube |
| 12/17/1992 | DE4218698A1 Casting molten metal from elongated metallurgical container - involves virtual sepn. of part of metal close to tapping hole from rest of container |
| 12/16/1992 | CN1019508B Method for charging rare-earth oxid dregs into cupola furnace |
| 12/09/1992 | CN1066887A Dephosphorization in cupola |
| 12/02/1992 | CN2123536U Open hearth single channel oxygen gun shant sleeve assembled jet |
| 12/02/1992 | CN2123535U Combined oxygen gun jet |