| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 08/26/2009 | CN100532502C Apparatus and process for the treatment of a material under pyrolytical conditions, and use thereof |
| 08/25/2009 | CA2387694C Method of producing reduced metals and apparatus for reducing metal oxides |
| 08/20/2009 | WO2009100819A1 Method for melting raw iron while recirculating blast furnace gas by adding hydrocarbons |
| 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 | CN201292373Y Fusion ironmaking apparatus |
| 08/19/2009 | CN101512021A Method and apparatus for reducing metalliferous material to a reduction product |
| 08/19/2009 | CN100529125C Method and plant for the heat treatment of solids containing iron oxide |
| 08/19/2009 | CN100529110C Ironmaking and steelmaking |
| 08/19/2009 | CN100529109C Direct smelting plant and process |
| 08/19/2009 | CN100529108C Modular furnace for reducing melting |
| 08/18/2009 | CA2462669C Method of producing metallic iron |
| 08/12/2009 | EP1996735A4 Production of iron using environmentally-benign renewable or recycled reducing agent |
| 08/12/2009 | EP1481101B1 Method and device for the continuous production of steel using metal charge material |
| 08/12/2009 | CN201288201Y Coal based ferrum redactum rotary kiln |
| 08/12/2009 | CN201288200Y Energy-saving and environment friendly reductive sponge iron shaft furnace |
| 08/12/2009 | CN201288199Y Movable remote controlling device for melting-out and reducing ironmaking blast furnace coal helix |
| 08/12/2009 | CN101506390A A method for the commercial production of iron |
| 08/11/2009 | US7572316 Method for manufacturing reduced metal |
| 08/11/2009 | CA2270225C Process for returning finely dispersed solids discharged with a carrier gas from a reactor vessel |
| 08/06/2009 | WO2009037587A3 Method and apparatus for the direct reduction of iron ores utilizing gas from a melter-gasifier |
| 08/05/2009 | CN201284349Y Cold state analog experiment apparatus for COREX high furnace distribution and air flow distribution |
| 08/05/2009 | CN101497933A Method for rapidly and directly reducing haematite or limonite into ferrous powder |
| 08/05/2009 | CN100523228C Method and device for producing sponge iron by using reducing gas prepared from coke oven gas |
| 07/29/2009 | EP2082067A1 Method and device for producing molten material |
| 07/29/2009 | EP2082066A1 Method and device for producing molten material |
| 07/29/2009 | CN100519768C Shaft furnace for production of ferrochromium and smelting method thereof |
| 07/29/2009 | CN100519767C V-Ti magnetite reducing process |
| 07/23/2009 | US20090183600 Method for producing metallic iron |
| 07/22/2009 | CN101487068A Technological process for directly producing spongy iron from high-phosphor oolitic hematite |
| 07/16/2009 | WO2009087183A1 Cooling of a metallurgical smelting reduction vessel |
| 07/16/2009 | WO2009086841A2 Furnace melting and rolling |
| 07/09/2009 | WO2009084751A1 Method for forecasting sharp drop of pressure of melter-gasifier and method for controlling the pressure in ironmaking process |
| 07/09/2009 | WO2009084750A1 Apparatus and method for recovering excess gas generated in ironmaking process |
| 07/09/2009 | WO2009065843A3 Process for production of elemental iron |
| 07/09/2009 | US20090175753 Method and system for producing metallic iron nuggets |
| 07/08/2009 | CN201268710Y Fume extractor of gas heating type ferrous powder refining reducing belt furnace |
| 07/08/2009 | CN101476012A Feeding apparatus for feeding to rotary hearth furnace turntable and feeding system of rotary hearth furnace |
| 07/08/2009 | CN101476011A Rotary hearth furnace and rotary hearth furnace waste gases utilization method |
| 07/08/2009 | CN101476010A Method and apparatus for reducing metallic pellet by using coal dust in high furnace |
| 07/02/2009 | WO2009082123A2 Apparatus for manufacturing molten iron and method for manufacturing the same |
| 07/02/2009 | US20090169413 Process for Recycling of Steel Industry Iron Bearing By-Products, Pellet Obtained in that Process and Use Thereof |
| 07/01/2009 | CN100507013C Method for directly producing ferrochromium from chrome ore powder and coal |
| 07/01/2009 | CN100507012C Producing process of directly reducing iron |
| 07/01/2009 | CN100507011C Roasting device for reducing hematite, brown iron ore and siderite |
| 06/30/2009 | US7553793 Method and system for recovering catalyst for fuel cell |
| 06/30/2009 | US7553383 Method for fabricating a martensitic steel without any melting |
| 06/30/2009 | US7553351 Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals |
| 06/30/2009 | CA2472427C Method for making molten iron |
| 06/30/2009 | CA2443043C Rabble arm for a furnace |
| 06/30/2009 | CA2437254C Method for producing a melt iron in an electric furnace |
| 06/30/2009 | CA2315502C Control of molten metal level in a direct smelting vessel |
| 06/25/2009 | US20090158892 System and method for producing metallic iron |
| 06/24/2009 | EP1017619B1 Oxygen-fuel boost reformer process and apparatus |
| 06/24/2009 | CN201261790Y Apparatus for producing direct reduction iron |
| 06/24/2009 | CN101463405A Production method for producing spongy iron by dry coal powder gasification high furnace |
| 06/24/2009 | CN101463404A Production process for producing spongy iron by dry coal powder gasification high furnace |
| 06/23/2009 | US7550108 Metallurgical vessel |
| 06/17/2009 | EP2069545A1 Liquid or pulp aeration device |
| 06/17/2009 | EP1625238B1 Direct smelting plant |
| 06/17/2009 | CN101460637A Method and apparatus for producing direct reduced iron |
| 06/17/2009 | CN101457269A Process for directly producing sponge iron by microwave carbothermal reduction steel metallurgical iron-bearing dust |
| 06/17/2009 | CN100500873C Method for fusion deacidizing and quick-predeacidized trickle iron ore powder |
| 06/17/2009 | CN100500872C Ilmenite reduction method for preparing solder rod |
| 06/10/2009 | CN201254582Y Self-synchronizing uniform distributor |
| 06/10/2009 | CN201254581Y Forced synchronizing uniform distributor |
| 06/03/2009 | EP1781829B1 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same. |
| 06/03/2009 | CN101445851A Suspended reduction process for iron-containing materials and device therefor |
| 06/03/2009 | CN101445850A Suspended secondary fast reduction process for iron-containing materials and device therefor |
| 06/03/2009 | CN101445849A Sectional type combustion nozzle layout method of rotary hearth furnace used for reducing iron directly |
| 06/03/2009 | CN101445848A Process and device for continuous steelmaking from ferriferous material |
| 06/02/2009 | CA2284603C Method to lower the formation of clods and the clustering tendency of reducible iron containing agglomerated material, in particular pellets |
| 05/28/2009 | WO2009065843A2 Process for production of elemental iron |
| 05/27/2009 | CN201245672Y Apparatus for preventing hot spongy iron from being oxidized by air and cooling spongy iron |
| 05/27/2009 | CN101440417A Tube furnace-high furnace duplex coal-based smelting reduction ironmaking method |
| 05/27/2009 | CN101440416A Iron increase and phosphorous reduction method for oolitic high phosphorus hematite |
| 05/27/2009 | CN100491544C Method for producing metallic iron |
| 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 | WO2009043540A4 Method for purifying the crude gas from a solid matter gasification |
| 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 |
| 05/20/2009 | EP1774050A4 Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same. |
| 05/20/2009 | EP1593090B1 Multivariate, predictive regulation of a direct reduction process |
| 05/20/2009 | CN201242355Y Energy-saving smelting-furnace |
| 05/20/2009 | CN101437965A Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide |
| 05/13/2009 | EP2057294A2 A method for the commercial production of iron |
| 05/13/2009 | EP1338660B1 Metal oxide-containing green pellet for reducing furnace and method for production thereof, method for reduction thereof |
| 05/13/2009 | CN101432445A Direct smelting plant |
| 05/13/2009 | CN101429582A Method for producing ferro-silicon alloy and calcium aluminate material with red mud and aluminum ash |
| 05/13/2009 | CN101429581A Method for producing ferro-silicon alloy and magnesium aluminate spinel with aluminum ash and white olivine |
| 05/13/2009 | CN100487141C Technique for extracting titanium slag form red mud |
| 05/06/2009 | EP2054532A1 Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same |
| 05/06/2009 | EP1718776A4 Ironmaking and steelmaking |
| 05/06/2009 | CN100485048C Production method of metal iron |
| 04/29/2009 | CN201228268Y Charging mould for producing spongy iron material |
| 04/29/2009 | CN101418359A Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine |
| 04/29/2009 | CN100482599C Biological sponge iron preparation and its uses in water disposal |
| 04/23/2009 | WO2009052066A1 Ore reduction process using carbon based materials having a low sulfur content and titanium oxide and iron metallization product therefrom |
| 04/23/2009 | WO2009051172A1 Process for producing pre-reduced iron |
| 04/22/2009 | CN201225816Y Ore reaction furnace |
| 04/22/2009 | CN101415542A Grained metal iron with good rust resistance and producing method thereof |
| 04/22/2009 | CN101413041A Coal-based direct reduction iron rotary hearth furnace and combustion method thereof |