| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 12/02/2009 | CN100564555C Direct reduction process using a single fluidized bed |
| 12/01/2009 | CA2513341C Sealing structure of solid-transferring screw and method for producing reduced metal using the same |
| 12/01/2009 | CA2311073C Direct smelting vessel |
| 12/01/2009 | CA2302267C Method and device for the extraction of iron by direct reduction |
| 11/25/2009 | EP1831406B1 Method and device for producing metals and/or metal initial products |
| 11/25/2009 | CN201351168Y Iron-contained material continuous steelmaking device |
| 11/25/2009 | CN101586172A Method for preparing metallized pellet and reduced iron powder |
| 11/24/2009 | CA2420544C Process and apparatus for producing a fixed bed |
| 11/24/2009 | CA2381036C A direct smelting process |
| 11/18/2009 | CN201347437Y Device for manufacturing metallic pellet through utilizing direct reduction of oxygen-rich combustion of rotary furnace |
| 11/18/2009 | CN101580889A Method for increasing direct reduced iron metallization rate by industrial wastes containing iron and carbon |
| 11/18/2009 | CN100560739C Technique for reverting ironmaking by comprehensive utilization of fusion of coal gas and small ore |
| 11/17/2009 | US7618476 Method and apparatus for cooling reduced-iron agglomerate |
| 11/11/2009 | CN201343545Y Dredging machine for straight tube of COREX ironmaking furnace |
| 11/11/2009 | CN201343544Y Proximity switch adjustment device of COREX blast-furnace screw feeder |
| 11/11/2009 | CN101578378A Apparatus for restoring fine irons and apparatus for manufacturing molten iron comprising the same |
| 11/11/2009 | CN101575677A Method for producing titanium-rich materials and steel products through titanium mine |
| 11/11/2009 | CN101575654A Process and device for preparing iron alloy containing nickel and nickel-chromium |
| 11/10/2009 | CA2430436C Method for introducing a granular ore into a roasting kiln |
| 10/29/2009 | WO2009131242A1 Process for production of direct-reduced iron |
| 10/29/2009 | WO2009131148A1 Process for producing molten metal |
| 10/29/2009 | WO2009129653A1 A comprehensive recovery and utilization process for laterite-nickel ore |
| 10/28/2009 | EP2112236A1 Rotary hearth reducing furnace and method of operating the same |
| 10/28/2009 | CN101568650A Apparatus for manufacturing molten iron and method for manufacturing molten iron |
| 10/28/2009 | CN101568649A Apparatus for generating energy using a sensible heat during manufacturing of molten iron and method for generating energy using the same |
| 10/28/2009 | CN101565769A Electric furnace sponge iron hot charging device and method thereof |
| 10/28/2009 | CN101565768A Method for producing ferrous powder and co-production titanium slag by rapidly reducing titanium placer pellets by rotary hearth furnace |
| 10/28/2009 | CN101565766A Shaft furnace emptying technique of COREX smelting reduction device |
| 10/28/2009 | CN100554448C Method and apparatus for producing reduced metal |
| 10/28/2009 | CN100554439C Method and device for reducing metallized pellet by using high-purity water gas in pure oxygen shaft furnace |
| 10/28/2009 | CN100554438C Direct reduction device and method |
| 10/27/2009 | US7608129 energy efficiency |
| 10/27/2009 | US7608128 Direct reduction process and apparatus |
| 10/22/2009 | WO2009105320A3 Method and system for producing metallic iron nuggets |
| 10/22/2009 | US20090260483 Method for the commercial production of iron |
| 10/21/2009 | EP2109515A1 Continuous production of titanium by the metallothermic reduction of ticl4 |
| 10/21/2009 | CN101563469A Apparatus and method for manufacturing molten iron |
| 10/21/2009 | CN101560580A New iron-making and steel-making process by one-step method and equipment thereof |
| 10/21/2009 | CN100552057C Direction reduction and electric furnace smelting-separation preparation process of vanadium-titanium magnetite cold bound pellet |
| 10/20/2009 | US7604680 Producing nickel-base, cobalt-base, iron-base, iron-nickel-base, or iron-nickel-cobalt-base alloy articles by reduction of nonmetallic precursor compounds and melting |
| 10/15/2009 | WO2009125814A1 Agglomerate, containing titanium oxide, for manufacturing granular metallic iron |
| 10/15/2009 | WO2009125736A1 Process for production of granular metallic iron |
| 10/15/2009 | WO2009125693A1 Production of sintered ore |
| 10/15/2009 | US20090255374 Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals |
| 10/15/2009 | CA2720700A1 Method for producing granular metallic iron |
| 10/14/2009 | CN100549186C Direct smelting plant and process |
| 10/14/2009 | CN100548501C Apparatus for injecting solid particulate material into a vessel |
| 10/08/2009 | WO2009123115A1 Process for production of reduced iron |
| 10/07/2009 | CN101550463A Novel direct-reduction rotary hearth furnace |
| 10/06/2009 | US7597739 Producing wustite; achieve maximum preheating temperature without forming magnetite; using multiple reaction zones; flowing reducing gas and particulate matter in opposing directions |
| 10/06/2009 | US7597736 Method for utilizing slag |
| 10/06/2009 | CA2405966C A direct smelting process and apparatus |
| 10/06/2009 | CA2324782C A direct smelting apparatus and process |
| 10/03/2009 | CA2661419A1 System and method for producing metallic iron |
| 10/01/2009 | WO2009119843A1 Raw material introduction apparatus for molten iron making and method for introducing raw material for molten iron making |
| 09/30/2009 | CN201317787Y High temperature material transporting auger |
| 09/30/2009 | CN100545267C Melting gasifier and apparatus for manufacturing molten irons having the same |
| 09/29/2009 | CA2341772C Transfer of hot feed materials from a preprocessing plant to an electric smelting or melting furnace |
| 09/29/2009 | CA2268107C Device for dosed introduction of fine particle material into a reactor vessel |
| 09/24/2009 | WO2009115365A1 Method and device for producing liquid pig iron or liquid steel precursor products |
| 09/24/2009 | CA2718566A1 Process and apparatus for producing liquid pig iron or liquid primary steel products |
| 09/23/2009 | EP2102373A1 Apparatus for generating energy using a sensible heat during manufacturing of molten iron and method for generating energy using the same |
| 09/23/2009 | EP2102372A1 Metohd and apparatus for treating return ores using plasma |
| 09/23/2009 | CN101538634A Smelting process and device of pure iron |
| 09/23/2009 | CN101538633A Method for improving quality of direct reduced iron by rotary hearth furnace |
| 09/23/2009 | CN101538632A Preparation process and device of sponge iron |
| 09/23/2009 | CN101538631A Process and device for smelting ferronickel and nickel-containing molten iron by using lower-nickel materials |
| 09/23/2009 | CN101538630A Process and device for preparing chromium iron by using chromium ore powder |
| 09/23/2009 | CN101538629A Process and device for smelting chromium irons and chromium-containing molten iron by using chromium ore powder |
| 09/23/2009 | CN101538628A Method for directly reducing laterite-nickel into nickel-bearing ball iron in tunnel kilns |
| 09/23/2009 | CN101538627A Method for preparing direct reduced iron by bio-oil |
| 09/22/2009 | US7591874 Method and apparatus for reducing metal-oxygen compounds |
| 09/22/2009 | CA2420533C Process and apparatus for distributing a lumpy bulk material |
| 09/17/2009 | WO2009082123A3 Apparatus for manufacturing molten iron and method for manufacturing the same |
| 09/16/2009 | EP2100978A1 Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead |
| 09/16/2009 | EP2100973A1 Method and apparatus for cooling reduced-iron agglomerate |
| 09/16/2009 | EP1784514B1 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same |
| 09/15/2009 | US7589046 In rotary tube furnace through which gas stream flows, tube-bundle reactors for partial gas-phase oxidation of acrolein to acrylic acid |
| 09/15/2009 | US7588718 Apparatus for injecting gas into a vessel |
| 09/15/2009 | US7588625 Apparatus for manufacturing molten irons to dry and convey iron ores and additives and manufacturing method using the same |
| 09/15/2009 | CA2412530C Method and installation for the indirect reduction of particulate oxide-containing ores |
| 09/15/2009 | CA2363492C Method of optimizing the design and operation of a reduction process for iron-containing charge materials |
| 09/09/2009 | CN101528949A Process for production of granular metallic iron and equipment for the production |
| 09/09/2009 | CN101528948A Method and device for producing molten material |
| 09/09/2009 | CN100537785C Industrial oven |
| 09/09/2009 | CN100537784C Electric reducing furnace |
| 09/08/2009 | CA2338592C A direct smelting process and apparatus |
| 09/08/2009 | CA2338591C A direct smelting process |
| 09/03/2009 | WO2009034544A3 Static slope reduction furnace |
| 09/03/2009 | US20090218737 Direct smelting plant |
| 09/02/2009 | EP2096181A1 Briquette iron by hot molding and process for producing the same |
| 09/02/2009 | CN101522920A Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same |
| 09/02/2009 | CN101519707A Hematite prereduction process and multistage fluidized bed thereby |
| 09/02/2009 | CN100535130C Support frame structure for supporting dispersion plate in fluid layer reduction furnace for reduction of iron ore |
| 09/02/2009 | CN100535129C Direct smelting plant |
| 09/01/2009 | CA2407526C Method and installation for producing a metal melt |
| 09/01/2009 | CA2335753C A direct smelting process |
| 08/27/2009 | WO2009105320A2 Method and system for producing metallic iron nuggets |
| 08/27/2009 | CA2713442A1 Method and system for producing metallic iron nuggets |
| 08/26/2009 | EP2093300A1 Process for production of granular metallic iron and equipment for the production |