| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 10/13/2010 | CN101506390B A method for the commercial production of iron |
| 10/13/2010 | CN101457269B Process for directly producing sponge iron by microwave carbothermal reduction steel metallurgical iron-bearing dust |
| 10/13/2010 | CN101413040B Apparatus and method for producing direct reduction iron |
| 10/13/2010 | CN101365809B Apparatus for manufacturing molten irons |
| 10/13/2010 | CN101307370B Method for simultaneously producing sponge iron and water-gas |
| 10/13/2010 | CN101307369B Iron-smelting gas generator for producing sponge iron and water-gas |
| 10/12/2010 | US7811511 Particle dispersion copper alloy and method for producing the same |
| 10/07/2010 | WO2010114355A1 A process for producing sponge iron |
| 10/07/2010 | WO2010112612A1 Method and installation for producing direct reduced iron |
| 10/07/2010 | CA2755458A1 Method and installation for producing direct reduced iron |
| 10/06/2010 | CN201598305U 转底炉炉底结构 Rotary hearth furnace hearth structure |
| 10/06/2010 | CN201598304U 具有水封装置的炉底结构 Bottom structure with a water seal device |
| 10/06/2010 | CN201598303U 传动炉底结构 Transmission bottom structure |
| 10/06/2010 | CN101855506A Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier |
| 10/05/2010 | US7806959 Reduction of a melt of iron ore and a carbonaceous reducucing agent, such as coke, and a basic slag; heating, carburizing, melting, and causing cohesion; metallurgy; high-purity iron particles, diameter, 1-30 mm; < .50% sulfur, carbon, silicon, manganese |
| 09/30/2010 | WO2010110694A1 Plasma furnace |
| 09/29/2010 | EP2231882A1 Apparatus and method for recovering excess gas generated in ironmaking process |
| 09/29/2010 | CN101845530A Process for producing nickel-containing iron alloy from laterite on fluidized bed |
| 09/29/2010 | CN101845529A Preheating reduction furnace for iron making through smelting reduction |
| 09/29/2010 | CN101260448B Fusion reduction iron-smelting method for directly using concentrate powder |
| 09/22/2010 | CN201587956U Automatic production line of direct reduced iron |
| 09/22/2010 | CN1916189B Spray gun for direct melting of reduced puddling and its dynamic multi-gun furnace |
| 09/22/2010 | CN101838743A Method for recovering ferrum, vanadium, chromium and gallium from vanadium extraction tailings |
| 09/22/2010 | CN101838715A Method for preparing carbon iron alloy by hydrogen, carbon dioxide and combustible heat cycle |
| 09/22/2010 | CN101189349B Cold start-up method for a direct smelting process |
| 09/21/2010 | US7799100 coal is aged by heating in an organic solvent to produce upgraded coal for metallurgy having higher thermal plasticity than that of the coal; use in coal-based direct reduction process (so-called carbon composite method) to produce iron |
| 09/15/2010 | CN201581104U Integrated charging set for reduced iron |
| 09/15/2010 | CN201581103U Energy-saving mold used for sponge iron loading materials |
| 09/15/2010 | CN201581102U Iron-making process furnace roof charging system |
| 09/15/2010 | CN101831560A Method for producing iron ore concentrate by using Bayer process red muddy sand |
| 09/15/2010 | CN101831520A Method for producing sponge iron co-production sodium aluminate solution by using Bayer process red mud |
| 09/15/2010 | CN101831519A High-temperature high-pressure central charging distribution process method and device for melting reduction furnace |
| 09/15/2010 | CN101565769B Electric furnace sponge iron hot charging device and method thereof |
| 09/15/2010 | CN101440416B Iron increase and phosphorous reduction method for oolitic high phosphorus hematite |
| 09/15/2010 | CN101230411B Carbonaceous pellet two-stage jumping type temperature-control reduction smelting equipment and method |
| 09/10/2010 | WO2010101231A1 Hearth structure of rotary hearth furnace |
| 09/10/2010 | WO2010099640A1 Method and equipment of producing iron by smelting-reduction |
| 09/08/2010 | EP2225401A2 System and method for producing metallic iron |
| 09/08/2010 | EP2225400A2 Reducing furnace and apparatus for manufacturing molten iron comprising the same |
| 09/08/2010 | CN101827950A Process for producing pre-reduced iron |
| 09/08/2010 | CN101824505A Method for producing low-sulfur molten iron in one step by smelting and reducing copper slag |
| 09/08/2010 | CN101824504A Method for preparing carbon-iron alloy with hydrogen, steam and combustible through thermal circulation |
| 09/08/2010 | CN101824503A Method for producing vanadiferous pigiron by adopting vanadiferous converter steel slag |
| 09/08/2010 | CN101824502A Reduction roasting magnetic separation process of low-grade raw iron ores |
| 09/08/2010 | CN101629222B Method for obtaining chromated nickel base material by treatment of chrome slag with smelting reduction process |
| 09/08/2010 | CN101538627B Method for preparing direct reduced iron by bio-oil |
| 09/08/2010 | CN101265510B Fusion reduction reaction furnace and fusion smelting method for metal |
| 09/07/2010 | US7790099 Process and apparatus for extracting zinc |
| 09/07/2010 | CA2424386C Solid electrolyte with high ion conductivity and electrochemical system using the solid electrolyte |
| 09/01/2010 | CN101818225A Method for producing direct reduced iron by stepping type monomer series-connected roasting furnace |
| 09/01/2010 | CN101586172B Method for preparing metallized pellet and reduced iron powder |
| 08/26/2010 | WO2010094566A1 Method and plant for the production of substitute gas |
| 08/26/2010 | CA2752953A1 Process and installation for producing substitute gas |
| 08/25/2010 | EP2221388A1 "Method of producing metallic iron and raw material feed device" |
| 08/25/2010 | CN101812329A Method for making reducing gas special for indirect reduction of iron oxides |
| 08/25/2010 | CN101476011B Rotary hearth furnace and rotary hearth furnace waste gases utilization method |
| 08/25/2010 | CN101348842B Oxygen top blown smelting reduction iron manufacturing process |
| 08/24/2010 | US7780759 Direct reduction process |
| 08/24/2010 | US7780756 Ore reduction process and titanium oxide and iron metallization product |
| 08/24/2010 | CA2299109C Paired straight hearth (psh) furnaces for metal oxide reduction |
| 08/18/2010 | EP2218796A1 Method for making molten iron |
| 08/18/2010 | CN101805812A Method for refining metal and preparing building material from mineral |
| 08/18/2010 | CN101158550B Kiln furnace for roasting particle ore |
| 08/17/2010 | US7776136 fluidized beds; compaction |
| 08/12/2010 | WO2010088740A1 A direct smelting process and apparatus |
| 08/12/2010 | DE10260733B4 Verfahren und Anlage zur Wärmebehandlung von eisenoxidhaltigen Feststoffen Method and apparatus for heat treatment of solids containing iron oxide |
| 08/11/2010 | EP2216419A2 The technology of refining metallic wastes containing zinc in a rotary furnace |
| 08/11/2010 | EP2215418A1 Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier |
| 08/11/2010 | CN101802143A Method for purifying the crude gas from a solid matter gasification |
| 08/11/2010 | CN101798610A Method and device using coal to directly reduce iron |
| 08/11/2010 | CN101445848B Process and device for continuous steelmaking from ferriferous material |
| 08/11/2010 | CN101307372B Device for manufacturing and reducing crust pellet and production process |
| 08/05/2010 | WO2010086229A1 Method and system for producing pig iron or fluid steel pre-products |
| 08/05/2010 | US20100192729 Process and apparatus for producing sponge iron |
| 08/05/2010 | CA2751001A1 Method and system for producing pig iron or fluid steel pre-products |
| 08/04/2010 | CN101796201A 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 |
| 08/04/2010 | CN101796200A Process for manufacturing molded products of direct-reduced iron and process for manufacturing pig iron |
| 08/04/2010 | CN101792863A Method for extracting valuable elements from slag of melted high-iron high-silicon nonferrous metal |
| 08/04/2010 | CN101792860A Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof |
| 08/04/2010 | CN101792859A Method for extracting multiple metals |
| 08/04/2010 | CN101792841A CO2 recycle method for sponge iron gasification production |
| 08/04/2010 | CN101792840A Ferrous material injection reduction furnace and ferrous material injection reduction process |
| 08/04/2010 | CN101792835A Feeding system for blast furnace ore and coke channel system |
| 08/03/2010 | US7767191 Combustion looping using composite oxygen carriers |
| 08/03/2010 | US7767136 Apparatus for the combustion of gas exiting from a furnace, for the preheating of scraps entering the furnace itself and related process |
| 07/29/2010 | WO2010084822A1 Process for manufacturing granular iron |
| 07/29/2010 | CA2745763A1 Process for manufacturing granular iron |
| 07/28/2010 | EP2210960A1 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 |
| 07/28/2010 | EP2209922A2 Process for production of elemental iron |
| 07/28/2010 | CN201535617U 铁系氧化物直接还原生铁的隧道窑 Direct reduction of iron oxide iron tunnel kiln |
| 07/28/2010 | CN1763231B Method of producing metallic iron |
| 07/28/2010 | CN101790590A Process for producing reduced iron pellets, and process for producing pig iron |
| 07/28/2010 | CN101787450A Method for enriching tantalum and niobium, rare earth element, iron and phosphorus from rare metal ores |
| 07/28/2010 | CN101787408A Method for producing direct reduced iron by utilizing sensible heat of raw gas |
| 07/28/2010 | CN101787407A Method for reducing and extracting copper smelting waste slag through microwave carbon heating |
| 07/28/2010 | CN101787406A Technology and device for non-smelting reduction of ultra-fine hematite powder |
| 07/28/2010 | CN101358260B Apparatus for waste heat recovery from smelting reduction ironmaking in rotary hearth furnace and steam production |
| 07/28/2010 | CN101358259B Device for waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production |
| 07/27/2010 | CA2540804C Method and apparatus for reducing metal-oxygen compounds |
| 07/22/2010 | US20100180723 Method for manufacturing molten iron |