| Patents for C21B 15 - Other processes for the manufacture of iron from iron compounds (585) |
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| 11/29/2007 | US20070272058 Direct Smelting Plant and Process |
| 11/22/2007 | US20070267787 Methods of implementing a water-cooling system into a burner panel and related apparatuses |
| 11/07/2007 | EP1851345A1 Production of ferronickel |
| 10/24/2007 | CN101058853A Method of reclaiming chemical industry products by using industrial slag containing vanadium, chromium, iron and phosphorous |
| 09/19/2007 | CN101037792A Preparation method of ferromagnetic nano wire |
| 07/19/2007 | US20070163385 Process for producing microparticles and apparatus therefor |
| 07/18/2007 | EP1689915A4 Apparatus and method for the reduction of metals |
| 07/18/2007 | CN100999785A Process of enriching noble metal from iron refined mineral |
| 07/03/2007 | US7238222 Thermal synthesis production of steel |
| 05/22/2007 | US7220293 Thermal synthesis production of steel |
| 05/08/2007 | CA2213095C Process for converting iron oxide to iron carbide employing internally generated carbon oxide as the carbiding agent |
| 05/03/2007 | US20070095168 Method and apparatus for determining particle parameter and processor performance in a coal and mineral processing system |
| 04/25/2007 | EP1776469A2 Solid-fluid composition and uses thereof |
| 04/12/2007 | US20070079666 Process and plant for reducing solids containing iron oxide |
| 04/05/2007 | DE4426623B4 Zweistufenverfahren zur Erzeugung von Eisencarbid aus Eisenoxid Two-stage process for the production of iron carbide from iron oxide |
| 03/28/2007 | CN1936027A Method for producing titanium oxide containing slag |
| 03/21/2007 | CN1306044C Method for producing titanium oxide containing slag |
| 01/30/2007 | US7169731 Mteal powder on catalyst support; dissolving metal in solvent; heating; precipitation; freezing |
| 01/23/2007 | US7166144 Contacting an organic phase comprised of a water insoluble and water immiscible solvent solution of an extraction reagent; contacting partially loaded organic phase with aqueous metal bearing solution to form a metal depleted aqueous raffinate solution; contacting aqueous metal bearing solution |
| 01/09/2007 | US7160353 Process for producing molten iron |
| 12/27/2006 | CN1884052A Process for preparing phosphoric acid and ferroalloy from ferrophosphorus |
| 12/21/2006 | WO2006133500A1 Processing of metal chloride solutions and method and apparatus for producing direct reduced iron |
| 12/21/2006 | CA2612158A1 Processing of metal chloride solutions and method and apparatus for producing direct reduced iron |
| 12/12/2006 | US7147687 Non-alloying core shell nanoparticles |
| 12/07/2006 | US20060272452 Production of iron |
| 11/30/2006 | US20060266159 Method and device for pure hydrogen generation from acidic solution |
| 11/14/2006 | US7135055 Non-alloying core shell nanoparticles |
| 09/08/2006 | WO2006092615A1 Electrochemical method and apparatus for removing oxygen from a compound or metal |
| 08/31/2006 | WO2006089358A1 Production of ferronickel |
| 08/31/2006 | CA2597741A1 Production of ferronickel |
| 08/16/2006 | EP1689915A1 Apparatus and method for the reduction of metals |
| 08/10/2006 | US20060174726 Method for producing magnetostrictive element |
| 08/09/2006 | CN1814813A Method for separating and extracting iron, vanadium and titanium from vanadium-titanium magnetite |
| 08/03/2006 | US20060169103 Process for producing particulate iron metal |
| 05/11/2006 | US20060096420 Method for reducing chromium containing raw material |
| 05/09/2006 | US7041152 forming a slurry of a sulfuric acid solution in an oxygen-containing atmosphere in an agitated multiple-compartment pressure leaching vessel; separating the solution from the product slurry to yield a residue; and recovering a (especially precious) metal value from the residue. |
| 05/03/2006 | EP1468123B1 Method for production of metallic elements of high purity such as chromes |
| 04/06/2006 | US20060070495 Granular metallic iron |
| 03/29/2006 | EP0837034B1 Process and equipment for producing iron carbide |
| 03/15/2006 | CN1746320A Production of block nanometer iron materials |
| 01/18/2006 | CN1721555A Metallurgical vessel |
| 12/07/2005 | CN1230561C Chemical vapor deposited spherical reductive iron |
| 11/30/2005 | CN1229197C Method for preparing high-activity reduced iron powder and P-totuidine |
| 10/19/2005 | EP1586665A1 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 |
| 10/12/2005 | CN1222625C Method for using low temperature rectification combination blast furnace and direct reduction reactor |
| 10/06/2005 | US20050217432 Apparatus and method for the reduction of metals |
| 10/06/2005 | US20050217426 Furnishing nonmetallic precursor compounds comprising metallic-base nickel, cobalt, iron, iron-nickel, or iron-nickel-cobalt compounds, and alloying element, reducing precursor to produce initial metallic particle without melting the initial metallic particle; reduced incidence of ceramic inclusions |
| 06/23/2005 | WO2005017233A3 Insulated cold hearth for refinning metals having improved thermal efficiency |
| 06/09/2005 | WO2005052219A1 Apparatus and method for the reduction of metals |
| 06/08/2005 | CN1623896A CO generator |
| 06/01/2005 | CN1621338A Synthesis method of iron nanotube array |
| 05/26/2005 | US20050109162 From their ores by electrolysis, where a first metal is in ionic form, and a second metal is in colloidal form and is less reactive than the first metal; industrial scale electrochemistry |
| 05/12/2005 | US20050100496 CO generator |
| 03/30/2005 | CN1602363A Method for producing titanium oxide containing slag |
| 03/09/2005 | CN1191989C Equipment for producing material containing triferric carbide |
| 02/24/2005 | WO2005017233A2 Insulated cold hearth for refinning metals having improved thermal efficiency |
| 02/10/2005 | US20050028643 Heating with reducing agents to reduce iron oxide to iron |
| 02/02/2005 | CN1572889A Combined steel and iron making equipment |
| 01/12/2005 | EP1017619A4 Oxygen-fuel boost reformer process and apparatus |
| 12/16/2004 | US20040253175 Electrostatically enhanced tribochemical methods and apparatus |
| 11/09/2004 | CA2302214C Oxygen-fuel boost reformer process and apparatus |
| 10/14/2004 | DE10297448T5 Verfahren zur Herstellung von Tantal- und/oder Niobpulvern mit hoher Oberflächenkennzahl A process for the production of tantalum and / or niobium powders having a high specific surface area |
| 10/06/2004 | CN1169643C Preparation method of high specific surface area tantalum powder and/or niobium powder |
| 09/30/2004 | WO2004018717A9 Electrostatically enhanced tribochemical methods and apparatus |
| 09/21/2004 | CA2325813C Cold steel cambering apparatus and method |
| 09/07/2004 | US6786951 Reduction of tantalum and/or niobium oxides with magnesium, calcium, strontium, barium or cerium halides |
| 08/31/2004 | US6783744 For recovery of high purity zinc oxide products and optionally iron carbon feedstocks from industrial waste streams containing zinc oxide and/or iron; waste streams treated by adding carbon and ammonium chloride displacing undesired metal |
| 08/12/2004 | WO2004018717A3 Electrostatically enhanced tribochemical methods and apparatus |
| 07/14/2004 | EP1437420A1 Method for producing titanium oxide containing slag |
| 05/20/2004 | US20040093984 Increasing the surface area of the ferrous oxide particles where the individual particles had a prism-like shape |
| 04/15/2004 | US20040071619 Method for the purification of zinc oxide controlling particle size |
| 04/08/2004 | WO2004033730A1 Method for producing titanium oxide containing slag |
| 04/06/2004 | CA2287646C Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 03/04/2004 | WO2004018717A2 Electrostatically enhanced tribochemical methods and apparatus |
| 02/24/2004 | US6696029 Method for the purification of zinc oxide controlling particle size |
| 02/17/2004 | US6692709 Using an extractant solution of a calcium ion or magnesium ion loaded extractant in a water immiscible organic solvent |
| 11/06/2003 | WO2002079529A8 Method for direct metal making by microwave energy |
| 11/06/2003 | US20030206822 High purity iron, method of manufacturing thereof, and high purity iron targets |
| 10/16/2003 | US20030192403 Drainage aid for metal heap leaching |
| 08/21/2003 | WO2003068435A1 A process for preparing tantalum powder and/or niobium powder having high specific surface area |
| 08/13/2003 | CN1435289A Method for preparing high-activity reduced iron powder and P-totuidine |
| 07/08/2003 | US6589667 Spherical porous iron powder and method for producing the same |
| 06/19/2003 | US20030110890 Process for the production of high surface area tantalum and/or niobium powders |
| 06/04/2003 | EP0946756A4 Producing iron from solid iron carbide |
| 04/16/2003 | CN1410209A Preparation method of high specific surface area tantalum powder and/or niobium powder |
| 02/26/2003 | CN1398990A Chemical vapor deposited spherical reductive iron |
| 02/25/2003 | US6524356 Combusting a first supply of a liquid/gaseous hydrocarbon, with oxygen in first stage to provide flame gases, passing it into second stage, injecting a second supply of hydrocarbon, reacting with flame gas to form carbon monoxide and hydrogen |
| 11/05/2002 | US6474124 Cold steel cambering apparatus and method |
| 10/10/2002 | WO2002079529A1 Method for direct metal making by microwave energy |
| 10/10/2002 | WO2002079521A1 Method for recovering recyclable metals contained in solid residues from iron and steel industries by means of carbothermic reduction and distillation, in solid and liquid states |
| 08/29/2002 | US20020117022 Converting trivalent iron ions and impurity divalent copper ions in aqueous solution of iron chloride to divalent iron ions and monovalent copper ions using hydrochloric acid, separating monovalent copper ions using ion exchange resins |
| 07/09/2002 | US6416728 Reducing, carburing raw material |
| 05/28/2002 | US6395062 Process for recovery of metals from metal-containing ores |
| 05/09/2002 | US20020053260 Process for extraction of metals |
| 05/02/2002 | US20020050097 Method and apparatus for producing reformed gases |
| 02/26/2002 | US6350408 Alloys with gold, zinc and/or copper |
| 12/11/2001 | US6328783 Producing iron from solid iron carbide |
| 11/01/2001 | US20010036436 Reducing, carburing raw material |
| 10/18/2001 | US20010029811 Use of mixture of C9 alkylsalicylaldoxime and ketoxime as extractant in water-immiscible organic solvent solution in metal extraction circuit to enhance transfer of iron values to dilute acid wash solution |
| 10/16/2001 | US6302940 Chemical synthesis of monodisperse and magnetic alloy nanocrystal containing thin films |