| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 11/25/2008 | CA2423166C Method for making reduced iron |
| 11/20/2008 | WO2008140226A1 Method for manufacturing molten iron comprising nickel |
| 11/20/2008 | WO2008139893A1 Self-fluxing pellet for blast furnace and method for producing the same |
| 11/12/2008 | CN101305104A Method for supersonically injecting oxygen into a furnace |
| 11/12/2008 | CN101305103A Method for the operation of a shaft furnace, and shaft furnace suitable for said method |
| 11/06/2008 | WO2008131614A1 A SMELTING METHOD OF LOW-P STAINLESS STEEL BASE USING LOW-GRADE IRONSTONE CONTAINING Ni AND Cr |
| 11/05/2008 | CN100430496C Iron ore briquetting |
| 10/29/2008 | EP1428642B1 Method of manufacturing waste granulated plastics, and method for thermal decomposition of the plastics |
| 10/28/2008 | US7442229 Method to improve iron production rate in a blast furnace |
| 10/22/2008 | CN101289697A Blast furnace ironmaking raw material and method for preparing same |
| 10/22/2008 | CN101289696A Very long distance concentrated phase conveying process for coal fines |
| 10/21/2008 | CA2430027C Carbon containing nonfired agglomerated ore for blast furnace and production method thereof |
| 10/08/2008 | CN101280348A High-temperature coal gas blast furnace iron-smelting process |
| 10/08/2008 | CN101280347A Blast furnace-converter interface í«compact one tank modeí» process |
| 10/08/2008 | CN100424188C Coal powder injection technological process for blast furnace and special pulverized coal feeder thereof |
| 10/07/2008 | CA2398341C Method for producing pozzolanic binders for the cement industry from steel slags using a reduction metal bath |
| 10/01/2008 | CN101275172A Charging method for blast furnace burden |
| 09/24/2008 | CN100420559C Method of manufacturing waste granulated plastics, and method for thermal decomposition of plastics |
| 09/17/2008 | CN101265508A Harmless resource treatment method for chromium slag by using blast furnace iron-making technique |
| 09/12/2008 | WO2008080922A3 Process for making pig iron in a blast furnace |
| 09/12/2008 | WO2007136914A3 Regenerated calcium aluminate product and process of manufacture |
| 09/10/2008 | CN101260444A Blast furnace iron-smelting method |
| 09/04/2008 | DE212007000007U1 Kohlenstaub-Einblaslanze Pulverized coal injection lance |
| 08/28/2008 | WO2007102881A3 Composition for reducing steelmaking slag |
| 08/27/2008 | EP1960557A1 Method for supersonically injecting oxygen into a furnace |
| 08/21/2008 | DE102006051017A1 Method for reducing pH of powdered rotary kiln slag comprises adding acidic material, e.g. quartz mineral, especially graywacke powder |
| 08/06/2008 | CN101235425A Blast-furnace coke colloid composite anticatalyst and spraying device |
| 07/30/2008 | EP1948833A2 Method for the operation of a shaft furnace, and shaft furnace suitable for said method |
| 07/30/2008 | CN101233211A Process for production of coke and process for production of pig iron |
| 07/30/2008 | CN101230409A Coke heat strengthening agent for blast furnace iron-smelting |
| 07/16/2008 | EP1944382A2 Method for the introduction of inorganic solid bodies into hot liquid melts |
| 07/10/2008 | WO2008080922A2 Process for making pig iron in a blast furnace |
| 07/02/2008 | EP1939305A1 Process for making pig iron in a blast furnace |
| 06/04/2008 | EP1927667A1 A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| 06/04/2008 | EP1927666A1 A smelting process of ferronickel with nickel oxide ore containing of crystal water in a blast furnace |
| 06/03/2008 | CA2198901C Method and apparatus for electric steelmaking |
| 04/24/2008 | WO2008046656A1 Solids distributor for injection plants, blast furnaces and the like |
| 04/24/2008 | CA2666566A1 Solids distributor for injection plants, blast furnaces and the like |
| 04/16/2008 | CN201046969Y Revolving furnace coal gas recovery utilizing system |
| 04/15/2008 | CA2284167C Combined installation of a furnace and an air distillation apparatus and use method |
| 04/08/2008 | CA2398344C Method for treating slags or slag mixtures on an iron bath |
| 04/03/2008 | WO2008039088A1 Reductant for blast furnace charge |
| 04/03/2008 | WO2008037132A1 A process for iron smelting in blast furnace using purified oxygen and coal gas and its device |
| 04/02/2008 | CN101153234A Strong passivator of coke and use method of the same |
| 04/02/2008 | CN100378421C Integrated process and installation for the separation of air fed by compressed air from several compressors |
| 03/26/2008 | CN100376694C Method for preparing ferrotitanium by molten titanium slag |
| 03/20/2008 | WO2008032634A1 Process for preparation of ore, equipment for preparation thereof, ironmaking process and ironmaking/steelmaking process |
| 03/20/2008 | US20080069763 Method for manufacturing titanium oxide-containing slag |
| 03/19/2008 | CN101146916A Method and apparatus for carrying out a metallurgical process |
| 03/06/2008 | DE202006016093U1 Kohleverteiler für Hochöfen u.dgl. Coal distributor for blast furnaces, etc.. |
| 03/05/2008 | CN101134984A Raw mix layered loading blast furnace iron-smelting method |
| 02/28/2008 | DE102007038002A1 Recyclate, useful as aggregate to e.g. concrete and cement, comprises slag resulting from extraction of metals, preferably metal smelting slag and iron smelting slag containing less amount of free calcium oxide or free magnesium oxide |
| 02/07/2008 | WO2008014579A1 Injection process of granulated rubber into blast furnaces |
| 01/30/2008 | CN101113495A Method for extracting iron titanium vanadium from high-titanium iron concentrate |
| 01/30/2008 | CN100365135C Furnance top pressure control method based on resistance coefficient equivalent |
| 01/24/2008 | WO2008009178A1 Dephosphorization method in the process of smelting ni-cr pig iron from a nickel oxide ore |
| 01/23/2008 | CN101109950A Blast furnace production process control information intelligence system |
| 01/17/2008 | WO2008006764A1 Pulverized coal injection lance |
| 01/17/2008 | CA2655298A1 Pulverized coal injection lance |
| 12/26/2007 | CN101092656A Method for smelting base metal of low phosphorous stainless steel by using low-grade limonite of containing nickel-chromium |
| 12/21/2007 | WO2007146430A2 Apparatus and method for processing metallurgical 'fines' in (eaf) electric arc furnaces |
| 12/05/2007 | CN101082066A Technical method for spraying waste plastics particle into blast furnace and production facility |
| 12/05/2007 | CN101082008A Coke deactivator containing lanthanide series rare-earth elements and and method of use thereof |
| 11/29/2007 | US20070272058 Direct Smelting Plant and Process |
| 11/28/2007 | CN100351430C A non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion |
| 11/28/2007 | CN100351397C Additive of agglomeration for iron mine |
| 11/28/2007 | CN100351396C Chemical additive for pulverized coal injection in blast furnace |
| 11/21/2007 | EP1857532A1 Solid biomass and method for production thereof |
| 11/15/2007 | DE102006022408A1 Verfahren zur Erhöhung des Nachverbrennungsgrades von Prozessgasen bei Stahlherstellungsprozessen mit Heißwindnachverbrennung Method for increasing the afterburning of process gases in steel production processes with Heißwindnachverbrennung |
| 11/08/2007 | WO2005123896A3 Method and apparatus for carrying out a metallurgical process |
| 11/07/2007 | CN200971367Y Underwater bearing protection device of blast furnace slag wash system |
| 11/07/2007 | CN100347506C Method and device for distributing lumpy bulk material |
| 10/31/2007 | CN100345991C Color antirust iron and steel without paint |
| 10/10/2007 | CN101052730A Method for operating blast furnace |
| 10/03/2007 | EP1242636B1 Method and device for feeding a gas to a metallurgical vessel |
| 10/03/2007 | CN200955054Y Novel blast-furnace after-heat recovering-utilizing system |
| 09/20/2007 | WO2007105682A1 Process for production of coke and process for production of pig iron |
| 09/13/2007 | WO2007054308A3 Method for the operation of a shaft furnace, and shaft furnace suitable for said method |
| 09/12/2007 | EP1832664A1 Oxidant-swirled fossil fuel injector for a shaft furnace |
| 09/07/2007 | WO2007099246A2 Method of integrating a blast furnace with an air gas separation unit |
| 09/07/2007 | CA2644535A1 Method of integrating a blast furnace with an air gas separation unit |
| 09/05/2007 | EP0970336B1 Combined installation of a furnace and an air distillation apparatus and use method |
| 09/05/2007 | CN100335657C Method, device and program for monitoring operating condition of blast furnace |
| 08/22/2007 | CN101020931A Dry cooled coke powder blowing process and apparatus for blast furnace |
| 08/15/2007 | EP0969105B1 Method of operating a movable hearth furnace for reducing oxides |
| 08/15/2007 | CN101016578A Molten steel purifying slag agent produced by blast furnace fusion method |
| 08/09/2007 | DE102005018712B4 Verfahren zur Erzeugung von Roheisen im Hochofen unter Zuführung von Reduktionsgas A process for producing pig iron in a blast furnace while supplying the reducing gas |
| 08/09/2007 | DE102004054065B4 Verfahren zur Roheisenerzeugung in einem Hochofen mit maximalem Einsatz von Ersatzreduktionsmitteln und minimiertem Koksverbrauch Process for the production of pig iron in a blast furnace with maximum use of alternative reducing agents coke consumption and minimized |
| 08/07/2007 | CA2236587C Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 08/02/2007 | WO2006133675A3 Method for production of pig iron in a blast furnace with introduction of reducing gas into the blast furnace shaft |
| 08/01/2007 | CN2928861Y Discharging valve system for blast furnace top gas |
| 07/26/2007 | US20070170624 Method for renovating a combined blast furnace and air/gas separation unit system |
| 07/25/2007 | EP1325160B1 Method and device for producing a static bed |
| 07/11/2007 | CN1997758A Prediction of cavity size in the packed bed systems using new correlations and mathematical model |
| 07/11/2007 | CN1995401A Intelligent diagnosis and determination support system for blast furnace |
| 07/05/2007 | US20070151995 Celluar wheel sluice |
| 07/04/2007 | CN1993483A Apparatus for blowing reducing agent into blast furnace, and method for operating blast furnace using said apparatus |
| 06/19/2007 | US7232542 Preheating cold blast air of a blast furnace for tempering the hot blast temperature |
| 06/06/2007 | CN1974791A Production process of extracting zinc oxide and pig iron from cinder and slag containing Zn, Fe and P6 |
| 05/30/2007 | CN1318609C Agglomerate surface additive for ironmaking |