| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
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| 10/07/2009 | CN101550465A Manganese-based fluxing agent for converter steelmaking and preparation method thereof |
| 10/07/2009 | CN101549364A Method of using hot tandem rolling broad strip mill to produce steel plate for ship hull structure use |
| 10/07/2009 | CN101549353A Method for producing low-alloy and large-size square steel by continuously casting and continuously rolling |
| 10/06/2009 | US7597741 Method of making steel |
| 10/06/2009 | US7597736 Method for utilizing slag |
| 10/06/2009 | CA2428469C Method and apparatus for treatment of metallurgical slag and the like |
| 10/06/2009 | CA2324782C A direct smelting apparatus and process |
| 10/03/2009 | CA2661419A1 System and method for producing metallic iron |
| 10/01/2009 | WO2009120858A1 Burner/injector panel apparatus |
| 10/01/2009 | WO2009095293A3 Method for determining the size and shape of a solid material in an arc furnace, an arc furnace, a signal processing device and programme code and a storage medium |
| 10/01/2009 | US20090248477 Primary products production system and method |
| 10/01/2009 | CA2719933A1 Burner/injector panel apparatus |
| 09/30/2009 | EP1532281B1 Cooling plate for metallurgic furnaces |
| 09/30/2009 | CN201317789Y Demountable furnace bottom |
| 09/30/2009 | CN201317788Y Water-cooled retaining wall device of waste heat boiler |
| 09/30/2009 | CN101545067A Method for producing pipe line steel J55 by RH refining technology |
| 09/30/2009 | CN101545066A Method for smelting H2S corrosion resistant petroleum casing pipe steel 110S |
| 09/30/2009 | CN101545026A Weight determining method of influence factor of oxygen blasting amount of converter steel smelting |
| 09/30/2009 | CN101545025A Rapid repairing method for water leakage of converter oxygen lances |
| 09/30/2009 | CN101545024A Method for blowing desulphurized molten iron in converter |
| 09/30/2009 | CN101543838A Method for manufacturing steel wire rod for pipe line steel submerged arc welding wire |
| 09/29/2009 | CA2341772C Transfer of hot feed materials from a preprocessing plant to an electric smelting or melting furnace |
| 09/24/2009 | WO2009116684A1 Method of processing slag |
| 09/24/2009 | DE202009005034U1 Hochtemperatur-Rückschlagventil für Gasspüler High-temperature non-return valve for bubbler |
| 09/23/2009 | EP2103580A1 Durable sleeve bricks |
| 09/23/2009 | EP2102374A1 Method and device for preheating lumpy material |
| 09/23/2009 | CN201313920Y Dust removing device for oxidizing period of electric steel making |
| 09/23/2009 | CN201313919Y Auxiliary repairing device for inner hole of steel tapping hole of revolving furnace |
| 09/23/2009 | CN201313918Y Special cover plate for steel tapping hole of revolving furnace |
| 09/23/2009 | CN201313917Y 位移补偿式密封装置 Displacement compensation sealing device |
| 09/23/2009 | CN201313916Y 水平位移补偿式密封装置 Horizontal displacement compensation sealing device |
| 09/23/2009 | CN201313915Y Sealing device for converter movable gas hood |
| 09/23/2009 | CN101541981A Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a ddd installation |
| 09/23/2009 | CN101538635A Method for controlling nitrogen and residual element in low carbon aluminium-killed cold-rolled steel produced by electric furnace |
| 09/23/2009 | CN101538623A Process for manufacturing T/P91.92 fine-grained heat-resistant steel pipe |
| 09/23/2009 | CN100543150C Composite cooling agent for steel-smelting and production technique thereof |
| 09/22/2009 | US7591976 Nozzle for use in continuous casting |
| 09/22/2009 | US7591876 Injection of solids into liquids by means of a shrouded supersonic gas jet |
| 09/22/2009 | US7591875 Alloying fine adjustment method |
| 09/22/2009 | CA2410799C Method and device for preventing slag from flowing along when tapping a molten metal |
| 09/17/2009 | WO2009112137A1 Metallurgical process and plant herefor |
| 09/17/2009 | US20090229416 Refining Molten Metal |
| 09/17/2009 | US20090229408 Use of a channel induction furnace to process at least one of a molten metal product, a vapor phase metal product and a slag product from a variety of feed materials |
| 09/17/2009 | CA2717190A1 Metallurgical process and plant herefor |
| 09/16/2009 | EP2100974A2 Lance for holding a sensor or sampler for metal melts |
| 09/16/2009 | EP2099940A1 Method of regulating the output of carbon monoxide in a metallurgical melting process |
| 09/16/2009 | CN201309947Y Homogeneous slag stopper for tapping of converter |
| 09/16/2009 | CN201309946Y Balanced type movable smoke hood flexible device |
| 09/16/2009 | CN101535507A System for optically analyzing a molten metal bath |
| 09/16/2009 | CN101532774A Manual rotary type furnace door carbon oxygen lance |
| 09/16/2009 | CN101532071A Converter dephosphorization complex slag former and slagging technology |
| 09/16/2009 | CN101532069A Device for recycling flue gas of steelmaking converters through full-dry purification and process thereof |
| 09/16/2009 | CN100541164C Device for performing measurements and/or taking samples in molten metals |
| 09/16/2009 | CN100540686C Novel process for steel-smelting |
| 09/16/2009 | CN100540685C A method for direct steel alloying |
| 09/11/2009 | WO2009109301A1 Lance holder |
| 09/11/2009 | CA2716431A1 Lance holder |
| 09/10/2009 | DE102008012554A1 Lanzenhalter Lance holder |
| 09/09/2009 | EP2098602A1 Iron-based powder material, method for producing the same, and briquette for steelmaking material |
| 09/09/2009 | EP2097543A1 Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a ddd installation |
| 09/09/2009 | CN201305611Y An oxygen lance with an endoscope light transmission device |
| 09/09/2009 | CN201305610Y Repair device of pit of steel-tapping hole |
| 09/09/2009 | CN101525718A Alloying process for stably and precisely controlling molybdenum content in steel |
| 09/09/2009 | CN101525689A Method for preparing carbonaceous autoreduction cold pressing block and application thereof |
| 09/09/2009 | CN101525678A Method of replacing lime with limestone for slagging and producing steel in oxygen top blown converter |
| 09/09/2009 | CN101524609A Asymetric membrane FeAl intermetallic compound porosint filter element and application thereof |
| 09/09/2009 | CN100537787C Integral furnace apron slag baffle |
| 09/09/2009 | CN100537784C Electric reducing furnace |
| 09/08/2009 | CA2639194C Coupling for a molten metal processing system |
| 09/08/2009 | CA2338592C A direct smelting process and apparatus |
| 09/08/2009 | CA2338591C A direct smelting process |
| 09/02/2009 | CN201301326Y Floating mechanical forming slag stopping ball |
| 09/02/2009 | CN201301325Y Water-cooled trunnion ring unit |
| 09/02/2009 | CN201301324Y Retainer seat mechanism for converter |
| 09/02/2009 | CN101522921A Method for operating a converter |
| 09/02/2009 | CN101519752A High strength and toughness pipeline steel roll in low-carbon and high-niobium-chromium system and preparation method thereof |
| 09/02/2009 | CN101519709A Gas supply method in high-carbon regions during smelting stainless steel by AOD furnace |
| 09/02/2009 | CN100535566C Control of refractory wear |
| 09/02/2009 | CN100535131C Dry-method dust collection and surplus energy recovery device for steel-smelting converter flue gas |
| 09/02/2009 | CN100535129C Direct smelting plant |
| 09/01/2009 | US7582254 Mud gun cap |
| 09/01/2009 | US7582253 Heat exchanger system used in steel making |
| 09/01/2009 | US7581664 Multi-outlet casting nozzle |
| 09/01/2009 | CA2335753C A direct smelting process |
| 08/26/2009 | EP2010851A4 Metal making lance tip assembly |
| 08/26/2009 | CN201297854Y Carbon-oxygen lance limit control device |
| 08/26/2009 | CN201296764Y Hanging type alloy chute of a converter |
| 08/26/2009 | CN201296763Y Anti-bursting slag-obstructing cone |
| 08/26/2009 | CN201296762Y Blanking water jacket |
| 08/26/2009 | CN101516548A Method for pouring melt from a tiltable metallurgic vessel and system for performing the method |
| 08/26/2009 | CN101514383A Protective method for hearth of vanadium titano-magnetite rotary hearth furnace used for coal-based direct reduction |
| 08/26/2009 | CN101514382A Method for precisely controlling maximum gas generating capacity of converter |
| 08/26/2009 | CN101514381A Production method for reducing inclusion in pipeline steel |
| 08/26/2009 | CN100532619C High-boron low-carbon abrasion resistant cast steel and heat treatment method thereof |
| 08/26/2009 | CN100532583C Oxygen top blown rotary converter air curtain slag retaining steel outlet |
| 08/26/2009 | CN100532582C Synthetic brick laying method for ball bottom of converter |
| 08/26/2009 | CN100532581C Method and apparatus for decarburization of molten steel |
| 08/26/2009 | CN100532580C Method of using CO2 in sputtering protection of steel making converter |
| 08/26/2009 | CN100532579C Method for smelting base material of low phosphorous stainless steel by using low-grade limonite containing nickel-chromium |
| 08/20/2009 | US20090206528 High yield ladle bottoms |