| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 10/25/2011 | US8043402 Method for the production of a foamed slag in a metal bath |
| 10/25/2011 | US8043401 Method for the reduction of a slag having a high degree of chromium in an electric arc furnace |
| 10/19/2011 | CN102224263A A process for producing sponge iron |
| 10/19/2011 | CN102220446A Device for smelting sponge iron and reducing solid-phase iron oxide |
| 10/19/2011 | CN102220445A Iron-making method by direct reduction-grinding separation treatment of iron oxide scale through rotary hearth furnace |
| 10/18/2011 | US8038766 Iron ore fines, coal, an oxygen-containing gas, carbon monoxide, hydrogen reducing gas into a fluidised bed, partially reducing metalliferous material in the vessel; off-gas treatment of solids removal, cooling, H2O removal, CO2 removal, compression, reheat, return solids and reducing gas to vessel |
| 10/12/2011 | CN202007243U Fluidized bed system for reducing vanadium titanomagnetite powder with coal-prepared reducing gas |
| 10/12/2011 | CN102216473A Recarburisation method |
| 10/12/2011 | CN102212637A Method for recycling niobium from iron ore powder with low niobium grade by direct reduction and direct alloying |
| 10/12/2011 | CN102212636A Iron-making method by performing coal-based direct reduction in rotary hearth furnace and melting in gas melting furnace on lateritic-nickel ore |
| 10/12/2011 | CN102212635A Process for producing granulated iron by directly reducing low-grade complex difficultly-processed ore |
| 10/06/2011 | US20110239822 Production of ferro-alloys |
| 10/05/2011 | CN102206756A Method for comprehensively recycling rare earth nickel-metal hydride battery waste through direction reduction-slag-metal melting and separation |
| 10/05/2011 | CN102206725A Process for producing and reducing iron powder through two-step method |
| 10/05/2011 | CN102206724A Method for coproducing directly reduced iron in process of coke dry quenching by coke oven gas |
| 10/05/2011 | CN102206723A Air-base direct reduction iron-making method for reducing iron concentrate powder by self-reforming of gas rich in methane |
| 10/05/2011 | CN101649366B Method and device for making iron by smelting reduction |
| 09/29/2011 | WO2011118738A1 Carbon-material-containing iron oxide briquette composition, method for producing same, and method for producing reduced iron using same |
| 09/29/2011 | CA2792955A1 Carbon-material-containing iron oxide briquette composition, method for producing the same, and method for producing direct reduced iron using the same |
| 09/28/2011 | CN201992994U 一种海绵铁装卸罐机 One kind of sponge iron loading and unloading tank machine |
| 09/28/2011 | CN102203298A Method and device for operating a smelting reduction process |
| 09/28/2011 | CN101864505B Combined method and device for smelting reduction ironmaking |
| 09/27/2011 | US8025836 Method and plant for the heat treatment of solids containing iron oxide |
| 09/22/2011 | US20110231523 Mass Generation of Individual Virtual Servers, Virtual Web Sites, and Virtual Web Objects |
| 09/21/2011 | EP1888791B1 Forehearth |
| 09/21/2011 | EP1565585B1 Process for extracting zinc |
| 09/21/2011 | CN102191349A Method for preparing iron powder by directly utilizing high temperature sulfuric acid slag at outlet of boiling furnace |
| 09/21/2011 | CN101796201B Process for producing hot briquette iron using high-temperature reduced iron, and method and apparatus for temperature control of reduced iron for hot forming for the process |
| 09/20/2011 | US8021601 Plant for the heat treatment of solids containing titanium |
| 09/20/2011 | US8021599 Method and installation for producing steel products with optimum surface quality |
| 09/20/2011 | US8021458 charging electric arc furnace with unaggumulated carbon forming polymer ( PET, other plastics), formed carbon acts as reducing agent for metal oxide and acts as fuel and can be oxidized into carbon oxides to cause slag foaming, when iron oxide feed charged, reduction takes place to form C, Fe alloy |
| 09/15/2011 | WO2011110054A1 Method for producing direct reduction iron (dri) using sensible heat of raw coal gas |
| 09/14/2011 | CN201973707U 煤气加热式铁粉精还原炉用预热风助燃燃烧装置 Gas heating iron fine reduction furnace combustion air preheating combustion device |
| 09/14/2011 | CN102181781A Granular metallic iron |
| 09/14/2011 | CN102181595A Cooling method and system of high-temperature directly reduced iron |
| 09/13/2011 | US8016910 Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide |
| 09/09/2011 | WO2011107349A1 Method and device for producing pressed articles |
| 09/09/2011 | WO2011106883A1 Apparatus and methods for producing direct reduced iron |
| 09/09/2011 | CA2791828A1 Process and appratus for producing pressed articles |
| 09/09/2011 | CA2791815A1 Apparatus and methods for producing direct reduced iron |
| 09/07/2011 | EP1774050B1 Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same. |
| 09/07/2011 | CN201962331U 一种短流程的赤泥综合利用设备 Red mud utilization of equipment a short process |
| 09/07/2011 | CN201962311U 海绵铁隧道窑卸料吸灰装置 DRI tunnel kiln ash discharge suction device |
| 09/07/2011 | CN201962310U 海绵铁卸料清刷一体化机组 Sponge brush discharge clear integration unit |
| 09/07/2011 | CN201962309U 一种冶金反应罐均匀布风装置 A metallurgical reaction tank uniform air distribution device |
| 09/07/2011 | CN1861265B Ore-dressing process by using carbon-contg. block to reduce lean iron ore for prodn. of magnetite |
| 09/07/2011 | CN1699000B Method for preparing a metallic article having an other additive constituent, without any melting |
| 09/07/2011 | CN102177261A Device for smoothing the surface of a sinter mixture |
| 09/07/2011 | CN102174664A Comprehensive utilization method of red mud coal-base rotary kiln method |
| 09/06/2011 | US8012236 Method and apparatus for producing reduced metal |
| 08/31/2011 | CN102168182A Dezincification method for high-temperature direct reduction of zinc-containing powder carbon-bearing agglomerates |
| 08/31/2011 | CN102168159A Reducing agent for carrying out direct reduction roasting on limonite and hematite to produce reduced iron |
| 08/31/2011 | CN102168156A Iron and aluminum melting separation method for complicated and hard-dressing aluminum and iron intergrowth ore |
| 08/31/2011 | CN101818225B Method for producing direct reduced iron by stepping type monomer series-connected roasting furnace |
| 08/31/2011 | CN101269315B Modified spherical sponge iron for wastewater treatment and preparation method |
| 08/24/2011 | EP1435395B1 Granular metallic iron |
| 08/24/2011 | CN201942700U 一种直接还原铁回转窑 A direct reduced iron kiln |
| 08/24/2011 | CN201942699U 节能高效还原竖炉 Energy efficient reduction shaft furnace |
| 08/24/2011 | CN102165082A Production of ferro-alloys |
| 08/24/2011 | CN102162028A Application of laterite nickel ore to production of shaft furnace pellets, and method |
| 08/24/2011 | CN102162018A Iron making method by rotary hearth furnace direct reduction-grinding and separation treatment of high-phosphorus oolitic hematite |
| 08/23/2011 | US8003044 Apparatus for injecting solid particulate material into a vessel |
| 08/18/2011 | WO2011099070A1 Process for production of reduced iron, and process for production of pig iron |
| 08/18/2011 | US20110197713 Recarburisation method |
| 08/18/2011 | US20110197712 Method of coal gasification and direct ironmaking and system therefor |
| 08/17/2011 | CN201933128U 一种赤泥分离铁、铝硅渣和碱金属去除的设备 Red mud separation of iron, alumina-silica and alkali metal slag removal equipment |
| 08/17/2011 | CN201933103U 一种窑炉还原罐 One kind of kiln reduction tank |
| 08/17/2011 | CN201933102U 节能高效还原海绵铁隧道窑 Energy efficient tunnel kiln sponge iron reduction |
| 08/17/2011 | CN102159730A A material supply apparatus and process |
| 08/17/2011 | CN101775455B Iron reduction device |
| 08/17/2011 | CN101736113B Fine reduction furnace for smelting reduction iron making |
| 08/17/2011 | CN101365810B A dust recycling system for enhanced availability of Corex |
| 08/16/2011 | US7998398 Slag removal system for a burn table |
| 08/16/2011 | US7998237 Method and installation for the production of steel products having an optimum surface quality |
| 08/10/2011 | EP2352853A1 Nozzle for injecting gas containing oxygen into a pig iron device having an injector insertion pipe |
| 08/10/2011 | CN102149831A Process for producing agglomerates of finely particulate iron carriers |
| 08/10/2011 | CN102146490A Reduction iron making method and device |
| 08/09/2011 | US7993430 Process for producing molten iron and apparatus for producing molten iron |
| 08/04/2011 | US20110185856 Ironmaking and Steelmaking |
| 08/03/2011 | EP2350323A1 Method and device for operating a smelting reduction process |
| 08/03/2011 | CN101871031B Method and equipment for preparing reducing gas from coke oven gas to produce sponge iron |
| 07/27/2011 | EP2347018A1 Process for production of direct reduced iron |
| 07/27/2011 | CN201909988U Working condition prediction system for electric furnace smelting of ferroalloy |
| 07/27/2011 | CN102137915A Method of coal gasification and direct ironmaking and system therefor |
| 07/26/2011 | US7985389 Direct processing of ferrotitania ores and sands |
| 07/21/2011 | WO2011087199A1 Molten iron manufacturing apparatus for reducing emissions of carbon dioxide |
| 07/21/2011 | WO2011087036A1 Iron making method |
| 07/21/2011 | WO2011085863A1 Method and device for reducing iron ore-containing feed materials or for producing pig iron or liquid steel pre-products |
| 07/21/2011 | US20110175265 Method and devices for regulating the flow rate and for slowing down melt streams through magnetic fields in the tapping of metallurgical containers such as blast furnaces and melt furnaces |
| 07/21/2011 | CA2787199A1 Process and apparatus for reducing charge materials containing iron ore or for producing pig iron or liquid primary steel products |
| 07/20/2011 | CN201901681U Reduction gas heating device |
| 07/20/2011 | CN102127611A Method for reducing vanadium-titanium magnetite powder by coal reducing gas and fluidized beds |
| 07/20/2011 | CN102127610A Ironmaking equipment and process for direct smelting reduction of iron ore |
| 07/20/2011 | CN101831520B Method for producing sponge iron co-production with sodium aluminate solution by using Bayer process red mud |
| 07/20/2011 | CN101824503B Method for producing vanadiferous pigiron by adopting vanadiferous converter steel slag |
| 07/20/2011 | CN101787407B Method for reducing and extracting copper smelting waste slag through microwave carbon heating |
| 07/20/2011 | CN101701275B Method for preparing nickel iron by using rotary kiln for directly reducing nickel silicate ores |
| 07/20/2011 | CN101696846B Roll loosening device |
| 07/20/2011 | CN101643810B Technology for producing sponge iron and high purity CO gas |
| 07/20/2011 | CN101638702B Recycling method of outlet gas in direct reduction process using gas as reducing gas |