| Patents for C22B 15 - Obtaining copper (5,364) |
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| 10/11/2000 | CN1057344C Chloride assited hydrometallurgical extraction of metal |
| 10/04/2000 | EP1041341A1 Multiple coherent jet lance |
| 09/28/2000 | WO2000056942A1 Process for recovering metal values |
| 09/28/2000 | WO2000056482A1 Casting of high purity oxygen free copper |
| 09/28/2000 | CA2367436A1 Casting of high purity oxygen free copper |
| 09/20/2000 | CN1267338A Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 09/14/2000 | WO2000053820A1 Recovery of nickel and cobalt from ore |
| 09/08/2000 | WO2000052229A1 Copper recovery process |
| 09/07/2000 | DE19963434A1 Copper alloy cast manufacturing method involves quenching of molten metal rapidly from bottom side of crucible, to obtain unidirectional solidification |
| 09/06/2000 | EP0832302B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt |
| 09/05/2000 | US6113804 Composition and use of the composition for the extraction of metals from aqueous solution |
| 08/31/2000 | WO2000050652A1 Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |
| 08/30/2000 | EP0815270B1 Atmospheric mineral leaching process |
| 08/30/2000 | CN1055971C Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulfide minerals |
| 08/30/2000 | CN1055878C Method and device for treating composite elements |
| 08/24/2000 | WO2000049187A1 Process for making copper wire including solvent extraction, electrodeposition and cold working |
| 08/22/2000 | CA2270850C Metal recovery from skimmed slag |
| 08/09/2000 | EP1025269A1 Process for the extraction of metals from ammoniacal solution |
| 08/01/2000 | US6096110 Filling; flowing through upper and lower tapping holes; semi-continuous process; pyrometallurgy |
| 07/18/2000 | US6089479 Method for treating waste printed circuit boards with molten mixture of inorganic salts |
| 07/13/2000 | DE19900702A1 Recycling copper in spent ammoniacal circuit board etching solution involves reduction with natural or artificial light on photocatalyst of n- and p-semiconductors, preferably doped with metal |
| 07/11/2000 | CA2162052C Method for treatment of residues from organochlorosilane and/or chlorosilansynthesis |
| 07/04/2000 | US6083400 Method and apparatus for recirculating a heavier solution from the separation part of two separable solutions into a mixing unit |
| 06/29/2000 | WO2000037690A1 Silver-catalyzed bio-leaching process for copper extraction from chalcopyrite heap |
| 06/28/2000 | EP1012352A1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide or laterite ores |
| 06/28/2000 | EP1012351A1 Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 06/22/2000 | WO2000036167A1 Composition of oxime and hydroxy-ester for the solvent extraction of metals |
| 06/22/2000 | WO2000035556A1 Methods and apparatus for an improved pressure filter |
| 06/14/2000 | EP1008663A2 Vertical shaft furnaces |
| 06/06/2000 | CA2155209C Process for making copper foil |
| 05/24/2000 | CN1052761C Red copper smelting process |
| 05/16/2000 | US6063158 Sulfide mineral concentrate bioleaching |
| 05/16/2000 | CA2155207C Process for making copper metal powder, copper oxides and copper foil |
| 05/10/2000 | CN1052265C Chloride assisted hydrometallurgical extraction of copper |
| 05/09/2000 | US6060029 Process for extraction of metals from aqueous ammoniacal solutions with beta-diketone extractants while maintaining a voltage potential to control entrainment of the aqueous layer into the organic layer |
| 05/02/2000 | CA2138777C Production of metals from minerals |
| 04/27/2000 | WO2000023629A1 Process for bioleaching of copper concentrates |
| 04/26/2000 | CN1051804C Process for briquetting copper ore concentrate |
| 04/25/2000 | US6054105 Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution |
| 04/25/2000 | US6053958 Process for preparation of fertilizer containing slag |
| 04/18/2000 | CA2176487C Process for making copper wire |
| 04/12/2000 | EP0992597A1 Deoxidation of copper melt by gas poling with hydrogen-nitrogen mixture |
| 04/04/2000 | US6045763 Especially etching solutions which contain ammonia, at least one ammonium salt and metal ions in dissolved form and which accumulate in treatment of substrates containing valuable metals, especially copper-containing electronic sub-assemblies |
| 03/30/2000 | DE19844667A1 Verfahren zum Polen von Kupfer A method of Poland of copper |
| 03/29/2000 | EP0758933B1 Manufacture of copper rod |
| 03/29/2000 | CN1249009A Processf or the leaching of chalcopyrite |
| 03/28/2000 | US6042632 Method of moderating temperature peaks in and/or increasing throughput of a continuous, top-blown copper converting furnace |
| 03/23/2000 | WO2000015857A1 Process for extracting and recovering copper |
| 03/23/2000 | CA2344334A1 Process for extracting and recovering copper |
| 03/22/2000 | EP0987338A1 Method for producing welded copper pipes |
| 03/22/2000 | EP0986432A1 Method and system for selective removal of contamination from gas flows |
| 03/15/2000 | CN1050384C Copper smelting appts. |
| 03/08/2000 | EP0958390A4 Improvement in the process of recovery of metals |
| 03/07/2000 | USRE36598 Pyrometallurgy |
| 03/02/2000 | WO2000011228A1 Hydrometallurgical extraction of copper and other valuable metals |
| 03/02/2000 | DE19939027A1 Furnace for melting and/or casting oxidizable metals, especially copper cathodes comprises a floating element made of a refractory material essentially covering the entire melt surface |
| 03/01/2000 | EP0981652A1 Sulfide mineral concentrate bioleaching |
| 02/24/2000 | WO2000009772A1 Method for smelting copper sulfide concentrate |
| 02/16/2000 | EP0979208A1 Composition and method for reducing copper oxide to metallic copper |
| 02/15/2000 | US6024779 Layer covering the melt, removing the layer of carbon sand from upper surface of melt |
| 02/10/2000 | WO2000006784A1 Processing copper sulphide ores |
| 02/10/2000 | CA2336284A1 Processing copper sulphide ores |
| 02/03/2000 | DE19823104C1 Recovering copper foil from scrapped printed circuit boards using molten tin bath in treating furnace |
| 02/02/2000 | EP0975816A1 Method for recycling brass foundry waste |
| 01/27/2000 | WO2000003821A1 Method and device for the continuous degassing of molten metals |
| 01/27/2000 | DE19831331A1 Method and apparatus for recycling used copper etching liquid, with copper (II) ions of the used liquid treated to produce copper hydroxide which is heated to obtain copper oxide for subsequent solvation with use of sulfuric acid |
| 01/12/2000 | EP0786021B1 Process for making copper foil |
| 01/05/2000 | EP0832306B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 12/29/1999 | CN1047803C Liquid electric slag continuous refining process for composition copper |
| 12/28/1999 | US6007600 Method for producing copper in hydrometallurgical process |
| 12/23/1999 | WO1999066085A1 Treatment of roasted metal sulphide ores and ferrites by leaching with peroxysulphuric acid |
| 12/23/1999 | CA2334511A1 Treatment of roasted metal sulphide ores and ferrites by leaching with peroxysulphuric acid |
| 12/19/1999 | CA2275098A1 Bacterial leaching of copper and zinc without iron leaching |
| 12/19/1999 | CA2241064A1 Bacterial medium for zinc leaching without iron leaching |
| 12/15/1999 | EP0963451A1 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 12/15/1999 | CN1047406C Method for treatment of infusible copper concentrate |
| 12/12/1999 | CA2240450A1 Process for the treatment of roasted metal sulphide ores and ferrites |
| 11/30/1999 | US5993757 Oxime metal extractant, and aldehyde or ketone degradates in a water immiscible hydrocarbon solvent is reoximated thereby restoring the oxime extractant organic phase for further extraction in the metal extraction circuit. |
| 11/30/1999 | US5993635 Processing a sulphide mineral composition which at least partly comprises an iron-containing mineral. |
| 11/30/1999 | US5993514 Process for upgrading copper sulphide residues containing nickel and iron |
| 11/25/1999 | WO1999060179A1 Recovery of nickel from copper refinery tankhouse electrolyte |
| 11/24/1999 | EP0958390A1 Improvement in the process of recovery of metals |
| 11/24/1999 | EP0958386A1 Process for the treatment of particulate matter by fluidisation, and vessel with apparatus to carry out the treatment |
| 11/24/1999 | CN1236014A Method for leaching nickel from nickel matte |
| 11/23/1999 | US5989311 Recovery of copper from its sulfides and other sources using halogen reagents and oxidants |
| 11/17/1999 | EP0853682A4 Process and apparatus for extracting metal |
| 11/11/1999 | WO1999046414A3 Process for the desulphurization of blister copper |
| 11/09/1999 | US5980816 Method and apparatus for removing deposit in non-ferrous smelting furnace |
| 11/09/1999 | US5979033 Method of recycling waste printed circuit boards |
| 11/02/1999 | US5976219 Method and apparatus for recycling of scrap metal |
| 10/28/1999 | WO1999054516A1 Modifiers for aldoxime extractant of metal values |
| 10/28/1999 | CA2326806A1 Modifiers for aldoxime extractant of metal values |
| 10/26/1999 | US5972302 Method for the microwave induced oxidation of pyritic ores without the production of sulphur dioxide |
| 10/20/1999 | EP0950122A1 Method for microwave induced oxidation of sulphidic ore material in fluidized bed without sulphur dioxide emissions |
| 10/20/1999 | CN1232538A Method for feeding and directing reaction gas and solids into smelting furnace and multiadjustable burner designed for said purpose |
| 10/13/1999 | EP0948656A1 Method for downgrading high-melting materials by using a melting tank and an electro-reduction tank |
| 10/13/1999 | EP0641393B1 Method for controlling the fuel/air ratio of a burner |
| 10/13/1999 | CN1045624C Method for leaching nickel-copper matte |
| 10/07/1999 | WO1999050465A1 Recovery of precious metals and copper from copper/gold ores using resin technology |
| 10/07/1999 | CA2326168A1 Recovery of precious metals and copper from copper/gold ores using resin technology |