| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 11/24/2009 | CA2420544C Process and apparatus for producing a fixed bed |
| 11/11/2009 | CN101575677A Method for producing titanium-rich materials and steel products through titanium mine |
| 11/11/2009 | CN101575653A Method and device for separating carbon dioxide to improve mass energy of blast furnace gas |
| 10/29/2009 | WO2009129677A1 A method of iron smelting in blast furnace with high temperature coal gas |
| 10/21/2009 | CN100552046C Apparatus for blowing reducing agent into blast furnace, and method for operating blast furnace using said apparatus |
| 10/14/2009 | CN101555533A Oxygen blast furnace iron-making process adopting water-coal-slurry as fuel |
| 10/14/2009 | CN101555532A Oxygen blast furnace iron-making method based on cold-bonded carbonic pellet |
| 10/14/2009 | CN100549186C Direct smelting plant and process |
| 10/08/2009 | US20090253085 Non-corrosive treatment to enhance pressurized and non-pressurized pulverized coal combustion |
| 10/06/2009 | CA2324782C A direct smelting apparatus and process |
| 09/30/2009 | CN101545019A Method for smelting pig iron for high-silicon ultra-low-sulfur low-titanium ductile iron |
| 09/24/2009 | WO2009116674A1 Method for separating blast furnace gas |
| 09/24/2009 | WO2009116672A1 Method of separating blast furnace gas |
| 09/24/2009 | WO2009116671A1 Method and apparatus for separating blast furnace gas |
| 09/23/2009 | CN101538623A Process for manufacturing T/P91.92 fine-grained heat-resistant steel pipe |
| 09/22/2009 | CA2420533C Process and apparatus for distributing a lumpy bulk material |
| 09/17/2009 | US20090229414 System and method for producing metallic iron |
| 09/16/2009 | EP2100979A1 Process for preparation of ore, equipment for preparation thereof, ironmaking process and ironmaking/steelmaking process |
| 09/16/2009 | EP2099939A2 Process for making pig iron in a blast furnace |
| 09/16/2009 | CN101532068A Blast furnace ironmaking production process by cyclically utilizing steel slag and iron slag in metallurgy and chemical industry |
| 09/16/2009 | CN101531940A Method for manufacturing raw material coal for manufacturing coke, method for manufacturing coke and pig iron |
| 09/16/2009 | CN101531907A Method for manufacturing coke |
| 09/09/2009 | CN101525675A Method for smelting artificial chromium-rich mine |
| 09/09/2009 | CN101525557A Coke processing system and coke processing method |
| 09/09/2009 | CN101525556A Charred coal processing system and method |
| 09/02/2009 | EP2095050A1 Solids distributor for injection plants, blast furnaces and the like |
| 09/02/2009 | CN201301322Y A device capable of inserting and taking fuel spray gun into and out of outlet elbow of vertical furnace |
| 09/02/2009 | CN101519703A Low-coke-ratio blast furnace ironmaking technique |
| 08/26/2009 | CN101514402A Vanadium extraction technology by high oxygen enrichment method |
| 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 | WO2009100819A1 Method for melting raw iron while recirculating blast furnace gas by adding hydrocarbons |
| 08/20/2009 | DE102008009679A1 Staubeintragsystem Dust entry system |
| 08/20/2009 | CA2715525A1 Method for the melting of pig iron with the recirculation of blast furnace gas and with the addition of hydrocarbons |
| 08/19/2009 | CN101509048A Self-coke making process for blast furnace |
| 08/12/2009 | CN101503744A V-Ti-magnetite blast furnace smelting method |
| 08/12/2009 | CN101503743A Production process for producing special purpose cast iron by blast furnace and electric furnace duplex weak oxidation process |
| 08/11/2009 | CA2270225C Process for returning finely dispersed solids discharged with a carrier gas from a reactor vessel |
| 08/05/2009 | CN201284348Y Dust removing apparatus of coal fine making and spraying system |
| 08/05/2009 | CN101498554A Serial automatic coal injection control system and method for blast furnace |
| 08/05/2009 | CN100523225C Method to improve iron production rate in a blast furnace |
| 07/29/2009 | CN101492748A Two-stage type blowing breeze method and apparatus for blast furnace |
| 07/22/2009 | CN101490282A Pulverized coal injection lance |
| 07/21/2009 | US7563303 Low cost; for slags |
| 07/09/2009 | US20090173187 Manufacture of Ferroalloys |
| 07/08/2009 | CN101476004A Complete clean gas voltage equalizing method and system for blast furnace bucket |
| 07/08/2009 | CN101476003A Alkali blast furnace blowing coal based direct reducer and production method thereof |
| 07/08/2009 | CN101476002A Blast furnace iron manufacturing process |
| 07/08/2009 | CN101476001A Method for smelting medium titanium slag by blast furnace |
| 07/02/2009 | WO2009081784A1 Self-fluxing pellets for use in a blast furnce and process for the production of the same |
| 07/02/2009 | DE102007058125A1 Metallrückstände und Kohlenstoffträger enthaltender Formkörper Metal residues and carbon carriers containing moldings |
| 07/01/2009 | EP1765971A4 Method and apparatus for carrying out a metallurgical process |
| 07/01/2009 | CN201265016Y Cascade use apparatus for wastewater production |
| 06/24/2009 | EP1017619B1 Oxygen-fuel boost reformer process and apparatus |
| 06/24/2009 | CN101463398A Blast furnace iron manufacturing process |
| 06/24/2009 | CN100503841C Production process of extracting zinc oxide and pig iron from cinder and slag containing Zn, Fe and P |
| 06/17/2009 | CN201258335Y Blast furnace coal injection simulated experiment apparatus |
| 06/17/2009 | CN101457264A Blast furnace temperature optimization control method |
| 06/03/2009 | CN201250238Y Integrated iron and steel device for comprehensive utilization of waste-heat |
| 06/03/2009 | CN101448960A Method of integrating a blast furnace with an air gas separation unit |
| 06/03/2009 | CN101445845A Process for directly producing austenitic stainless steel by utilizing oxide nickel |
| 05/22/2009 | WO2009062611A1 Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier |
| 05/22/2009 | CA2705434A1 Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier |
| 05/07/2009 | US20090118115 Use of tio2 residues from the sulfate process |
| 05/07/2009 | US20090114062 Method of and smelter for producing steel with high manganese and low carbon content |
| 05/06/2009 | CN101422683A Pressure swing adsorption technique capable of absorbing carbon dioxide and carbon monoxide in blast furnace gas |
| 05/06/2009 | CN100485047C Intelligent diagnosis and determination support system for blast furnace |
| 04/29/2009 | CN101418356A Method for refining ferro nickel alloy from nickel oxide mine |
| 04/22/2009 | CN101413038A Coal powder pure oxygen blast furnace ironmaking process and equipment thereof |
| 04/16/2009 | US20090095134 Process and Equipment for Blast Furnace Ironmaking Using Pure Oxygen and Gas |
| 04/07/2009 | US7513729 Method and device for distributing a lumpy bulk material |
| 03/25/2009 | EP2039788A1 Dephosphorization method in the process of smelting ni-cr pig iron from a nickel oxide ore |
| 03/25/2009 | EP2038433A1 Pulverized coal injection lance |
| 03/25/2009 | CN101395249A Process for production of coke and process for production of pig iron |
| 03/19/2009 | WO2009035053A1 Process for producing reduced iron pellets, and process for producing pig iron |
| 03/19/2009 | CA2707423A1 Method for producing reduced iron pellet and method for producing pig iron |
| 03/12/2009 | WO2009031537A1 Process for manufacturing molded products of direct-reduced iron and process for manufacturing pig iron |
| 03/12/2009 | CA2698234A1 Method of producing reduced iron cast, and method of producing pig iron |
| 03/05/2009 | WO2009000704A3 Shaft furnace and method for operating a furnace |
| 03/04/2009 | EP2031077A1 Lumped skull lining material |
| 02/25/2009 | CN100463974C Dry cooled coke powder blowing process and apparatus for blast furnace |
| 02/19/2009 | DE102007038811A1 Immobilizing lead-zinc-containing rotary-klin clinker and filter duct from metallurgical plants e.g. shaft kilns, comprises producing carbon dioxide enriched atmosphere in reactor or reaction container to guide the clinker granulation |
| 01/29/2009 | WO2009014255A1 Ore-powder caking material for enhancing hot strength, pellet made with the same, and process for producing the same |
| 01/29/2009 | WO2007099246A3 Method of integrating a blast furnace with an air gas separation unit |
| 01/28/2009 | EP2018444A2 Regenerated calcium aluminate product and process of manufacture |
| 01/28/2009 | CN101353712A Apparatus for increasing production ability in iron and steel production |
| 01/28/2009 | CN101353710A Nickel iron blast furnace smelting process with nickel oxide ore as raw material |
| 01/28/2009 | CN101353709A Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials |
| 01/28/2009 | CN101353708A Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials |
| 01/28/2009 | CN100455676C Technical method for spraying waste plastics particle into blast furnace and production facility |
| 01/22/2009 | DE102007032376A1 Reduction gas generator useful in blast furnace, comprises central inert gas supply pipe for optical flame monitor, annular channel enclosing the gas supply pipe for fuel supply, annular channel for oxidizing agent supply, and openings |
| 01/21/2009 | CN101349688A Multifunctional general-purpose coal fines combustion test apparatus and method |
| 01/21/2009 | CN101348839A Special iron prepared by blast furnace process |
| 01/15/2009 | DE102007032375A1 Reducing-gas generator, used to supply blast furnace, comprises concentric fuel-air premixing arrangement, with central inert gas tube for flame monitor |
| 01/14/2009 | CN101343674A High-titanium protection stove pellet ore and preparation thereof |
| 01/14/2009 | CN100451132C Local on-line repairing methd of blast furnace crucible and blast furnace bottom |
| 12/31/2008 | WO2009000704A2 Shaft furnace and method for operating a furnace |
| 12/31/2008 | CN201172664Y Ferrotitanium smelting furnace body |
| 12/30/2008 | US7470310 Method and device for producing a static bed |
| 12/24/2008 | CN101328555A Mixing method of high quality low phosphor and sulfur high-alloy steel |
| 11/26/2008 | EP1994185A2 Method of integrating a blast furnace with an air gas separation unit |