| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 02/12/2009 | WO2008153440A3 Tuyer device for introducing gas media under a liquid metal level |
| 02/12/2009 | US20090038438 Systems and methods for accessing a furnace melt |
| 02/11/2009 | CN101365811A Flux used in smelting low-nitrogen, low-oxygen, and low-sulfur steel |
| 02/11/2009 | CN101363101A Large thickness quenched high strength steel and production method thereof |
| 02/11/2009 | CN101363097A Low-temperature impact resistant as-cast ductile iron with big section and production method thereof |
| 02/11/2009 | CN101362283A Manufacture method of ship rudder horn |
| 02/11/2009 | CN100460525C Manufacturing method for upper groove chamber of split vacuum groove chamber of vacuum refining device |
| 02/04/2009 | CN201191362Y Molten steel refining roof gun control device for vacuum loop degassing method |
| 02/04/2009 | CN201190170Y Oval-shaped refining ladle |
| 02/04/2009 | CN201189553Y Slag adding nozzle for protective slag |
| 02/04/2009 | CN101358323A Seamless steel tube for 27SiMnB steel, cylinder and production method thereof |
| 02/04/2009 | CN101358268A Method for producing raw material pure iron by mother liquid carburization and VOD refine |
| 02/04/2009 | CN101358267A Method for producing high-purity pure iron by secondary pumping of VOD refine |
| 02/04/2009 | CN101358266A Method for refining high-purity pure iron from low oxygen, low hydrogen and low nitrogen VOD |
| 02/04/2009 | CN101358265A Compound iron melt desulfurizing agent and method of preparing the same |
| 02/04/2009 | CN101358264A Aluminum calcareous slagging constituent |
| 02/04/2009 | CN100457949C Method of controlling carbon content in ultra-low carbon high strength high toughness steel |
| 01/28/2009 | CN101356295A Steel sheet for continuous cast enameling with highly excellent unsusceptibility to fishscaling and process for producing the same |
| 01/28/2009 | CN101353758A Hot rolling high strength steel plate for two-sided porcelain enamel and manufacturing method thereof |
| 01/28/2009 | CN101353753A Ultra-low carbon high-purity industrial pure iron and manufacturing method thereof |
| 01/28/2009 | CN101353750A Refining method by in situ extraction of inclusion content in melting steel |
| 01/28/2009 | CN101353715A Efficient composite desulfurizer |
| 01/28/2009 | CN101353714A Aluminum-free deoxidizing agent |
| 01/28/2009 | CN101353713A Use and use method of sulfur alloy or sulfur concentrate |
| 01/28/2009 | CN101353712A Apparatus for increasing production ability in iron and steel production |
| 01/28/2009 | CN100455692C High-strength weathering steel and method of manufacturing same |
| 01/28/2009 | CN100455689C Niobium, vanadium composite micro-alloying low-carbon boron steel for cold heading and production method thereof |
| 01/27/2009 | US7481965 Apparatus for injecting gas into a vessel |
| 01/27/2009 | US7481964 Sealed impeller for producing metal foam and system and method therefor |
| 01/27/2009 | CA2287461C Steel for steel sheets excellent in workability and method of deoxidizing same |
| 01/22/2009 | US20090020925 Melting furnace with agitator and agitator for melting furnace |
| 01/21/2009 | EP2016201A1 Method in connection with steel production |
| 01/21/2009 | EP1541699B1 Method for stirring steel |
| 01/21/2009 | CN201183806Y LF furnace cap capable of preventing adhering slag |
| 01/21/2009 | CN101351566A Degassing apparatus having duplex vacuum vessel |
| 01/21/2009 | CN101348847A Technological process for secondary refining desulphurization |
| 01/21/2009 | CN101348846A Blast furnace-intermediate frequency furnace duplexing smelting short process production technology |
| 01/21/2009 | CN101348843A Method for producing hot rolled steel strip for automotive frame |
| 01/21/2009 | CN100453943C Composite secondary and triple lance of charcoal rotary kiln and making method thereof |
| 01/21/2009 | CN100453686C Casting high boron abrasion-proof stainless steel containing high hardness boride and preparation method thereof |
| 01/21/2009 | CN100453681C High boron wear-resisting casting steel and preparation process thereof |
| 01/21/2009 | CN100453659C Desulfurizing and dephosphoring refining agent for external refining of molten steel |
| 01/21/2009 | CN100453658C Deoxygenation furnace-curing agent and its production |
| 01/21/2009 | CN100453657C Mono-slag converter process for producing high carbon low-phosphorus molten steel |
| 01/15/2009 | US20090014928 Gas Injection Lance |
| 01/14/2009 | CN101346486A Two-phase stainless steel |
| 01/14/2009 | CN101343715A High-strength high-ductility X70 thick-wall seamless pipeline steel and manufacturing method |
| 01/14/2009 | CN101343714A 30CrMnSiB steel, weldless steel tube for cylinder and method of manufacturing the same |
| 01/14/2009 | CN101343680A Metallurgy type refining slag special for ladle and manufacture method thereof |
| 01/14/2009 | CN101343679A Ladle furnace refining agent and preparation thereof |
| 01/14/2009 | CN101343678A Carbureting prevention processing method for quiet steel smelting LF stove |
| 01/14/2009 | CN101343677A Process for manufacturing low-silicon low-carbon deep punching/drawing steel |
| 01/14/2009 | CN100451135C Process of producing high quality carbon steel ingot with aluminium and RE added for high grade forging |
| 01/14/2009 | CN100451134C Double-slag converter process for producing high carbon low-phosphorus molten steel |
| 01/14/2009 | CN100451131C Production and utilization process for making steel using smelting slag |
| 01/13/2009 | US7476357 Gas mixing and dispersement in pumps for pumping molten metal |
| 01/08/2009 | WO2009004565A2 Flux and method of making same |
| 01/07/2009 | CN201176448Y Numerical control argon blowing machine |
| 01/07/2009 | CN201176447Y Yarn feeding device |
| 01/07/2009 | CN101338402A Copper-containing ferrite antimicrobial stainless steel belt and method for manufacturing same |
| 01/07/2009 | CN101338396A Method for smelting very-low carbon and high silicon stainless steel by AOD |
| 01/07/2009 | CN101338355A Argon-blowing spray gun for refining ladle and making method thereof |
| 01/07/2009 | CN101338354A Phosphorus-containing coarse nickel iron refining dephosphorization method |
| 01/07/2009 | CN101338353A High sulfur coarse nickel iron refining desulphurization method |
| 01/07/2009 | CN101338352A Cleaning mechanism for viscous slag in inner wall of desulfuring spray gun of gasification chamber |
| 01/07/2009 | CN101338348A Slag diluent for molten iron desulphurization slag |
| 01/07/2009 | CN101337210A Angle-inserting type hot metal pretreatment spray gun |
| 01/06/2009 | CA2317248C Equipment for the treatment of liquids |
| 12/31/2008 | WO2009001644A1 Steel with excellent machinability for mechanical structure |
| 12/31/2008 | CN101333628A Bridge structural steel plate and producing method thereof |
| 12/31/2008 | CN101333617A Stabilizing process for treating aluminium-silicon killed steel by sealed argon-blowing method |
| 12/31/2008 | CN101333582A On-line vacuum arrangement apparatus |
| 12/31/2008 | CN101333581A Sulfur fixing agent without slag accretion agent for magnesium spraying and deep desulphurizing preprocess for molten iron and desulphurization process thereof |
| 12/31/2008 | CN101333579A Method for producing tube blank steel for nuclear electricity |
| 12/31/2008 | CN100447286C High strength anti-corrosion easy processing and low magnetic cast steel for manufacturing ship weldable structure |
| 12/31/2008 | CN100447271C Method for smelting carbon dioxide corrosion resistant steel |
| 12/31/2008 | CN100447256C Method for making dephosphorization agent from basic skimming |
| 12/31/2008 | CN100446895C Cap agent with light alkaline particle steel coating |
| 12/30/2008 | CA2449774C Method for melting and decarburization of iron carbon melts |
| 12/30/2008 | CA2322146C Rust-resistant calcium steel |
| 12/25/2008 | US20080314201 Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Dispersants |
| 12/24/2008 | EP1532282B1 Metallurgical slag |
| 12/24/2008 | CN201169597Y Impurity removing and treating apparatus of steel liquid vacuum refining system |
| 12/24/2008 | CN101328561A Chromium ferritic stainless steel in precipitation strengthening, strip steel and making method thereof |
| 12/24/2008 | CN101328555A Mixing method of high quality low phosphor and sulfur high-alloy steel |
| 12/24/2008 | CN101328529A Technological process for molten steel secondary refining dephosphorization to produce ultra-low phosphorus steel |
| 12/24/2008 | CN101328528A Core cabling wire for secondary refining dephosphorization to produce ultra-low phosphorus steel and preparation thereof |
| 12/24/2008 | CN101328527A Speed variator type double system transmission gear for blast furnace bellless furnace top distributor |
| 12/23/2008 | CA2367546C Coupling for a molten metal processing system |
| 12/23/2008 | CA2308744C Multi-function lance for a vacuum degassing chamber and a method of using the same |
| 12/23/2008 | CA2304337C Steelmaking using magnesium carbonate |
| 12/21/2008 | CA2635495A1 Transferring molten metal from one structure to another |
| 12/18/2008 | WO2008153440A2 Tuyer device for introducing gas media under a liquid metal level |
| 12/18/2008 | WO2008152328A1 Novel additive comprising lead and/or a lead alloy for treating baths of liquid steel |
| 12/18/2008 | WO2007098429A3 Method of making steel |
| 12/17/2008 | EP2002023A1 Steel making material recycling system |
| 12/17/2008 | CN201165544Y Reverse V-shaped granule magnesium molten iron desulfuring spray gun |
| 12/17/2008 | CN201165536Y RH vacuum refining apparatus inset tube off-line spray repair machine |
| 12/17/2008 | CN201165535Y Narrow slit type composite air brick |
| 12/17/2008 | CN201165534Y Granule magnesium molten iron desulfuring spray gun |