| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 06/29/1994 | CN1088628A Shape steel material having high strength, high toughness and excellent fire resistance and process for producing rolled shape steel of said material |
| 06/29/1994 | CN1088622A A method of preparing an alloy using aluminium debris |
| 06/29/1994 | CN1088620A Method for producing steel |
| 06/29/1994 | CN1025221C Synthetic desulfurization powder agent |
| 06/28/1994 | US5324487 Vacuum-suction degassing apparatus |
| 06/28/1994 | US5324342 Decarbonizing melted steel by bubbling mixture of oxygen and non-oxidizing gas through melt |
| 06/23/1994 | WO1994013840A1 Flow control device for the suppression of vortices |
| 06/22/1994 | EP0357795B1 Radiation construction method for molten metal outflow port, its apparatus and recess radiating impeller used for said apparatus |
| 06/22/1994 | EP0355163B1 Process for producing molten stainless steel |
| 06/22/1994 | CN2169633Y Composite air supply element for metallurgical furnace bottom blowing |
| 06/22/1994 | CN1088270A Non-pulverizing aluminum-iron alloy and producing method thereof |
| 06/22/1994 | CN1088264A Method of producing line additives for steelmaking |
| 06/15/1994 | CN1025051C Gas-cleaning device of melting metal container |
| 06/09/1994 | WO1994012673A1 A method of manufacturing stainless steel |
| 06/09/1994 | CA2084845A1 Flow control device for the suppression of vortices |
| 06/08/1994 | EP0600236A1 Means for the treatment of metal melt |
| 06/08/1994 | CN1024928C Al.-Mn.-iron compound deoxidizing agent |
| 06/01/1994 | CN2167096Y Oxygen blowing head with central water-cooling means |
| 06/01/1994 | CN1024811C Air blowing and supply system at bottom of arc furnace |
| 05/31/1994 | US5316566 Liquid steel bath reheating method |
| 05/31/1994 | US5316563 Vacuum degassing method and its apparatus |
| 05/26/1994 | WO1994011541A1 Engineering ferrous metals, in particular cast iron and steel |
| 05/26/1994 | WO1994011540A1 Process for producing alloy utilizing aluminum dross |
| 05/26/1994 | CA2148923A1 The method of manufacturing alloy by using aluminum residuum |
| 05/24/1994 | US5314525 Method for treating a liquid with a gas using an impeller |
| 05/24/1994 | US5314524 Process of discharging charge-build up in slag steelmaking processes |
| 05/18/1994 | CN1024566C Manufacture of ferro alloy by molten bath reactor |
| 05/17/1994 | US5312525 Short-circuiting an electrode for transport of impurities |
| 05/17/1994 | CA1329483C Controlling disolved oxygen content in molten steel |
| 05/11/1994 | EP0596134A1 Method of obtaining double-layered cast piece |
| 05/10/1994 | US5310412 Melting metal particles and dispersing gas and additives with vaned impeller |
| 05/04/1994 | CN1024397C Method and apparatus for making clad core wire |
| 04/27/1994 | EP0536185B1 Liquid steel bath reheating method |
| 04/26/1994 | US5305990 Metallurgical furnace vacuum slag removal |
| 04/20/1994 | CN1085605A Technology for smelting ultralow-carbon high-chromium alloyed steel by subaerated induction furnace |
| 04/19/1994 | US5304231 Adding reducing agent and flux to surface of decarbonized melt then blowing same mixture in carrier gas onto melt surface in vacuum degassing vessel to remove sulfur, oxygen and nitrogen impurities |
| 04/19/1994 | US5304230 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/19/1994 | CA1328562C Method and apparatus for adding liquid alloying ingredient to molten steel |
| 04/13/1994 | EP0591971A1 Method of degassing and decarburizing stainless molten steel |
| 04/13/1994 | EP0407535B1 Metallurgical vessel and arrangement of the same |
| 04/13/1994 | CN2161623Y Movable gas blow gun for metal refining |
| 04/12/1994 | US5302184 Manufacture of ferroalloys using a molten bath reactor |
| 04/12/1994 | US5301928 Blowing lance suspension with integrated medium supply |
| 04/06/1994 | CN1084894A Molten steel purification heating clear smelting and purification heating core-coated wire |
| 04/05/1994 | US5299784 Degassing vessel for the vacumm treatment of liquid steel |
| 03/30/1994 | EP0589435A2 Refractory shape steel material containing oxide and process for producing rolled shape steel of said material |
| 03/30/1994 | EP0589424A2 Shape steel material having high strength, high toughness and excellent fire resistance and process for producing rolled shape steel of said material |
| 03/30/1994 | EP0589366A1 Steelplant lay-out |
| 03/30/1994 | CN1084580A Refractory shape steel material containing oxide and process for producing rolled shape steel of said material |
| 03/30/1994 | CN1084572A Aluminium-desulfurizing agent |
| 03/30/1994 | CN1084571A Oxygen-blast smelting process for manufacture of steel in induction electric furnace |
| 03/29/1994 | US5298053 Concurrent reheating and desulfurization of steels |
| 03/23/1994 | CN1084222A Process and apparatus for vacuum degassing molten steel |
| 03/22/1994 | CA1327887C Nozzles for injecting substances into liquids |
| 03/17/1994 | WO1994005816A1 Improved method of desulfurization in vacuum processing of steel |
| 03/17/1994 | WO1994005815A1 Method for producing steel |
| 03/17/1994 | CA2136731A1 Method for producing steel |
| 03/17/1994 | CA2136083A1 Improved method of desulfurization in vacuum processing of steel |
| 03/16/1994 | EP0331751B1 PROCESS FOR DECARBURIZING HIGH-Cr MOLTEN PIG IRON |
| 03/15/1994 | US5294245 Melting and mixing metals with impellers |
| 03/02/1994 | EP0584814A2 Process and apparatus for vacuum degassing molten steel |
| 03/02/1994 | CN2157933Y Wire-feeding machine |
| 03/02/1994 | CN1023884C Method and apparatus for pouring hollow ingot with electroslags |
| 03/01/1994 | CA1327268C Gas sink |
| 02/17/1994 | DE4243687C1 Vakuumanlage, insbesondere für die Sekundärmetallurgie Vacuum system, especially for secondary metallurgy |
| 02/16/1994 | CN1082117A Strong multicomponent deoxidant or additive |
| 02/15/1994 | US5286277 Charging solid ferrous material and two diffeent carbonaceous materials to furnace |
| 02/08/1994 | CA1326838C Process for the addition of metal elements into metal melts |
| 02/03/1994 | WO1994003028A1 Electrode holder |
| 02/03/1994 | DE4225256A1 Elektrodentragvorrichtung Electrode support device |
| 02/02/1994 | EP0581647A1 Process for preparing of soft magnetic alloys with high permeability and alloys |
| 02/02/1994 | EP0581203A1 Sealing of a gap between a steel ladle and its cover |
| 01/27/1994 | DE4237177A1 Controlled delivery plant for powdered goods, e.g. coal powder - has at least two outlet pipes for silo feeding delivery cylinder with aerated exit nozzle for discharge |
| 01/26/1994 | CN1023610C Special smelting process "electroslag induction refining" |
| 01/19/1994 | CN1023572C Compound spheroidizing modificator |
| 01/18/1994 | US5279639 Compositions for synthesizing ladle slags |
| 01/12/1994 | EP0578517A1 Process for treating a molten metal during a casting operation using a filter and filter used therefor |
| 01/12/1994 | EP0577873A1 Refractory for gas blowing for molten metal refining vessel |
| 01/06/1994 | WO1994000604A1 Process and device for blowing oxygen over metal melts |
| 12/09/1993 | DE4218244A1 Closed induction furnace with tilting mechanism - with the crucible tiltable in opposing directions |
| 12/08/1993 | EP0359828B1 Method for detecting slag flow |
| 12/07/1993 | US5268142 High-nitrogen ferritic heat-resisting steel with high vanadium content and method of production thereof |
| 12/02/1993 | CA2070133A1 Reducing chips to fibers in continuous digesters to facilitate lignin extraction |
| 12/01/1993 | CN1022893C Technology for processing molten manganese steel |
| 11/30/1993 | US5265850 Refractory for gas blowing for molten metal refining vessel |
| 11/23/1993 | US5264023 Cored wire with a content of passivated pyrophoric metal, and the use thereof |
| 11/23/1993 | US5263690 Apparatus for metallurgical treatment of molten steel |
| 11/23/1993 | CA1324513C Alloy steel product, die blocks and other forgings and castings made thereof and a method to manufacture the product |
| 11/18/1993 | EP0570046A1 Method and apparatus for producing steel melts |
| 11/18/1993 | EP0569448A1 A method of manufacturing stainless steel. |
| 11/11/1993 | WO1993022085A1 Method of obtaining double-layered cast piece |
| 11/11/1993 | CA2112585A1 Process for casting double-layered slab |
| 11/10/1993 | CN2145793Y Three-layered split-flow oxygen lance for steelmaking |
| 11/10/1993 | CN1022695C Gas injector |
| 11/03/1993 | CN1077994A Additive for iron-base material |
| 11/02/1993 | CA1323762C Dual action lance for ladles |
| 11/02/1993 | CA1323761C Production of steels containing low melting point metals |
| 11/02/1993 | CA1323757C Oxygen discharge nozzle |
| 10/27/1993 | CN1022576C Gas flushing device |
| 10/26/1993 | USRE34418 Nonclogging |