| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 07/13/2011 | EP2343352A1 Method of coal gasification and direct ironmaking and system therefor |
| 07/13/2011 | CN102121059A Method for directly making iron and producing sulfuric acid by using pyrite |
| 07/13/2011 | CN101781694B Dismounting and transporting trolley |
| 07/13/2011 | CN101578378B Apparatus for restoring fine irons and apparatus for manufacturing molten iron comprising the same |
| 07/07/2011 | WO2011081276A1 Apparatus for manufacturing molten iron |
| 07/06/2011 | EP2341307A1 Method and apparatus for continuous combined melting and steel making |
| 07/06/2011 | EP2341153A1 Method for drying compact containing metal oxide, method for reducing metal oxide, and rotary-hearth-type metal reducing furnace |
| 07/06/2011 | CN101736112B Method for fusing and reducing iron from copper residue by blowing inert gas |
| 06/30/2011 | WO2011076489A1 Method and device for providing reduction gas from generator gas |
| 06/30/2011 | CA2785236A1 Method and device for providing reduction gas from generator gas |
| 06/29/2011 | CN1871366B Method and apparatus for reducing metal-oxygen compounds |
| 06/29/2011 | CN101691621B Method of producing sponge iron from carbon dedusting ash and iron scales |
| 06/22/2011 | EP2334829A1 Device for smoothing the surface of a sinter mixture |
| 06/22/2011 | EP1802780B1 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same |
| 06/22/2011 | CN102102153A Method for producing zinc oxide and iron by treating zinc ore (slag) in reduction rotary kiln |
| 06/22/2011 | CN101724727B Short-flow rotary hearth furnace continuous steelmaking method comprehensively utilizing resources |
| 06/22/2011 | CN101665848B Direct steel making process for iron ore |
| 06/22/2011 | CN101605913B Rotary hearth reducing furnace and method of operating the same |
| 06/21/2011 | US7964014 Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility |
| 06/16/2011 | WO2011045332A3 Method and device for producing liquid pig iron in a melter-gasifier using carbon-containing slurry |
| 06/15/2011 | CN102099496A Method and system for energy-optimized and co2 emission-optimized iron production |
| 06/15/2011 | CN102094095A Method for quickly separating and directly reducing iron slag |
| 06/15/2011 | CN101724726B Method and device for ironmaking by smelting |
| 06/15/2011 | CN101487067B Industrial production method for directly producing iron and vanadium-titanium-aluminum alloy from vanadium-titanium magnet placer |
| 06/08/2011 | EP2329054A1 Production of ferro-alloys |
| 06/08/2011 | EP2329048A1 A material supply apparatus and process |
| 06/08/2011 | CN102089448A Briquette manufacturing method, reductive metal manufacturing method, and zinc or lead separation method |
| 06/08/2011 | CN102086479A Method for producing sponge iron by rotary hearth furnace |
| 06/08/2011 | CN101792835B Feeding system for blast furnace ore and coke channel system |
| 06/02/2011 | US20110126672 Method and device for the continuous production of steel using metal charge material |
| 06/02/2011 | US20110126671 Methods of Using Tires and Scrap Rubber in the Manufacture and Melting of Steel and Other Metals |
| 06/02/2011 | US20110126542 Method and device for the treatment of product gas produced by pressure gasification of solid fuels |
| 06/01/2011 | CN102084009A Process gas purification device for a melt reduction system for extracting pig iron |
| 06/01/2011 | CN102080135A Method for reducing and separating gravel iron from refractory ores, complex ores or iron-containing chemical industry tailings |
| 05/26/2011 | US20110120266 Method and system for energy-optimized and co2 emission-optimized iron production |
| 05/25/2011 | EP2325341A1 Methods and system für producing metallic ion nuggets |
| 05/25/2011 | CN102072646A Insulating furnace bottom structure |
| 05/25/2011 | CN102071275A Kiln device used for directly reducing iron |
| 05/25/2011 | CN102071274A Refractory driving furnace bottom structure |
| 05/25/2011 | CN102071273A Rotary hearth furnace for directly reducing coal base into iron |
| 05/25/2011 | CN101597663B Energy recovery system for preparing sponge iron by gasification of high-pressure pulverized coal and method thereof |
| 05/24/2011 | US7947217 Metallurgical processing installation |
| 05/24/2011 | US7947107 Direct reduction apparatus and process |
| 05/19/2011 | US20110113926 Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead |
| 05/19/2011 | DE10103940B4 Vorrichtung zum Einspeisen von Gas in einen Kessel An apparatus for injecting gas into a vessel |
| 05/18/2011 | EP2321437A1 Process for producing agglomerates of finely particulate iron carriers |
| 05/18/2011 | EP2321435A1 Recarburisation method |
| 05/18/2011 | EP1616968B1 Method for producing improved coal for use in metallurgy |
| 05/18/2011 | CN102061397A Method for recycling vanadium, chromium, titanium and iron from vanadium-titanium magnetite ore |
| 05/18/2011 | CN102061350A Short-process comprehensive red mud utilization method and equipment |
| 05/18/2011 | CN101538633B Method for improving quality of direct reduced iron by rotary hearth furnace |
| 05/17/2011 | US7942949 Method and apparatus for the recovery of refractory debris materials and ladle slags as process slags in iron metallurgy production in EAFs, and the related metering to the furnace for the formation of the process slag |
| 05/12/2011 | WO2011034276A3 Apparatus and method for manufacturing reduced iron |
| 05/12/2011 | DE202010016397U1 Röstvorrichtung zur Reduktion Roasting apparatus for reducing |
| 05/11/2011 | CN102057060A Process and device for producing pig iron or liquid steel precursors |
| 05/11/2011 | CN102057059A Method and device for producing liquid pig iron or liquid steel precursor products |
| 05/11/2011 | CN102051430A Method for representing high-phosphorus iron ore dynamic reaction stage |
| 05/11/2011 | CN102051429A Method for increasing medium-pressure carbonylation rate of sponge iron |
| 05/11/2011 | CN102051426A Method and device for smelting iron by reduction |
| 05/11/2011 | CN101463404B Production process for producing spongy iron by dry coal powder gasification in high furnace |
| 05/10/2011 | US7938883 Method and apparatus for making metallic iron |
| 05/10/2011 | US7938882 conveying hot direct reduced iron from a direct reduction shaft furnace or direct reduced iron reheating furnace, to hot briquetting plant by gravity and a second hot direct reduced iron stream, to an adjacent melting furnace, by gravity and/or a horizontal charge conveyor |
| 05/05/2011 | US20110100162 Method and system for producing metallic iron nuggets |
| 05/04/2011 | CN201817507U Sponge iron production device with two-flame tunnel kiln |
| 05/04/2011 | CN102046817A Method for manufacturing pig iron |
| 05/04/2011 | CN102041379A Utilization method of acid remelted iron powder |
| 05/04/2011 | CN102041377A Method for recovering iron, vanadium and chromium in vanadium-titanium magnetite concentrate |
| 05/04/2011 | CN102041340A Energy-saving efficient reduction shaft furnace |
| 05/04/2011 | CN102041339A Equipment and method for transferring thermal state directly reduced metal product |
| 05/03/2011 | US7935172 Ironmaking and steelmaking |
| 04/27/2011 | CN102037145A Method for melting raw iron while recirculating blast furnace gas by adding hydrocarbons |
| 04/27/2011 | CN102031326A Ironmaking process for directly smelting and reducing iron ore concentrate powder |
| 04/27/2011 | CN102031325A Iron making system and process for producing molten iron by melting gasification |
| 04/27/2011 | CN102031324A Facility for hot metal manufacturing by directly using small or lump coal and powdered iron ores, method for producing the same, complete steel mill using the facility and manufacturing method |
| 04/27/2011 | CN102031323A Natural gas hydro-cracking metallurgical method and equipment |
| 04/27/2011 | CN101665850B Device for heating and smelting sponge iron, separating iron slag and refining molten steel |
| 04/27/2011 | CN101323889B Direct smelting plant |
| 04/21/2011 | WO2011045332A2 Method and device for producing liquid pig iron in a melter-gasifier using carbon-containing slurry |
| 04/21/2011 | WO2011045212A1 Method and device for feeding into a smelting unit |
| 04/21/2011 | WO2011012964A3 Method for producing direct reduced iron with limited co2 emissions |
| 04/21/2011 | CA2777654A1 Process and device for charging into a smelting unit |
| 04/20/2011 | EP2057294B1 A method for the commercial production of iron |
| 04/20/2011 | CN102021341A New technology of heating and reducing mixture of garbage and iron ore or other metal oxides |
| 04/20/2011 | CN102021262A Method for preparing iron ingot co-production cadmium carbonate and copper carbonate from mixed scum by using arc-process |
| 04/20/2011 | CN102021261A Method for preparing iron ingots and co-producing cadmium sulfate and copper sulfate from mixed iron slag through arc method |
| 04/20/2011 | CN101643809B Sponge iron production technology by coal gasification |
| 04/20/2011 | CN101538632B Preparation process and device of sponge iron |
| 04/19/2011 | CA2508718C Method and apparatus for controlling temperature uniformity of the burden in a direct reduction shaft furnace |
| 04/14/2011 | WO2011043473A1 Molten metal producing device |
| 04/14/2011 | WO2011043472A1 Molten metal producing device |
| 04/14/2011 | US20110087204 Cryoplasty device and method |
| 04/14/2011 | CA2783205A1 Apparatus for manufacturing molten metal |
| 04/14/2011 | CA2773241A1 Apparatus for manufacturing molten metal |
| 04/14/2011 | CA2773239A1 Apparatus for manufacturing molten metal |
| 04/13/2011 | EP2309009A2 Method For preparing A Metallic Article Having An Other Additive Constituent, Without Any Melting |
| 04/13/2011 | CN201793610U Novel tapping hole device of electric furnace |
| 04/13/2011 | CN102016080A Process for production of direct-reduced iron |
| 04/13/2011 | CN102016079A Process for producing molten metal |
| 04/13/2011 | CN102010924A Method for producing directly reduced iron from coal |
| 04/13/2011 | CN101660017B Process for refining molten iron by directly using low-grade iron ores |