| Patents for C22B 15 - Obtaining copper (5,364) |
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| 08/12/2004 | WO2004067449A1 Modular device and methods for copper exploitation from waste, flotation waste, mine waters and waste waters |
| 08/10/2004 | US6773485 Method for recovering catalytic metals using a porous metal filter |
| 08/05/2004 | US20040151644 Method of recovering a cleaning agent |
| 08/03/2004 | US6770249 Hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks |
| 07/29/2004 | US20040146439 Method for recovering metal values from metal-containing materials using high temperature pressure leaching |
| 07/29/2004 | US20040146438 Method for recovery of metals from metal-containing materials using medium temperature pressure leaching |
| 07/29/2004 | US20040144209 Non-biochemical method to heap leach copper concentrates |
| 07/29/2004 | US20040144208 Process for refining raw copper material containing copper sulfide mineral |
| 07/22/2004 | US20040141896 For the stabilization of capacity, the extraction cells and their piping are constructed and situated in such a way, that the extraction stages can be connected in different combinations, either in parallel or in a series |
| 07/21/2004 | EP1438542A1 Arrangement and method for tapping a molten phase from a smelting furnace |
| 07/21/2004 | EP1438439A1 A method for purifying the solution in the hydrometallurgical processing of copper |
| 07/21/2004 | CN1158409C Method of recovering antimony and bismuth from copper electrolyte |
| 07/15/2004 | DE10260735A1 Verfahren und Anlage zur Wärmebehandlung von sulfidischen Erzen Method and apparatus for heat treatment of sulfidic ores |
| 07/14/2004 | EP1436562A1 Melt launder |
| 07/14/2004 | EP1436434A1 Method for the production of blister copper |
| 07/13/2004 | US6761749 Method for the production of blister copper in suspension reactor |
| 07/08/2004 | WO2004057041A1 Method and plant for the heat treatment of sulfidic ores using annular fluidized |
| 07/08/2004 | US20040131520 Releasing metals; multistage process; preconditioning sulfur with bacteria ; agglomeration of particles; adjust permeability |
| 07/08/2004 | US20040130076 System for direct electrowinning of copper |
| 07/08/2004 | CA2510106A1 Method and plant for the heat treatment of sulfidic ores using annular fluidized |
| 07/07/2004 | EP1434893A1 Zinc recovery process |
| 07/07/2004 | CN1156590C Method for reducing non-ferrous metal content in slag in the production of non-ferrous metals occurring in suspension smelting furnace |
| 07/01/2004 | US20040126291 Low viscosity copper solvent extraction reagent formulations |
| 06/30/2004 | EP1432836A1 Metal ion recovery |
| 06/30/2004 | CN1509341A Method for bacterially assisted heap leaching of chalcopyrite |
| 06/30/2004 | CN1155728C Method for smelting non-ferrous metal sulphides in a suspension smelting furnace in order to produce matte of a high non-ferrous metal content and disposable slay |
| 06/29/2004 | US6755891 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 06/29/2004 | US6755890 Positioning baffles from roof downwards forcing small particle metallurgical coke to settle in reduction zone |
| 06/29/2004 | CA2101514C Chloride assisted hydrometallurgical copper extraction |
| 06/23/2004 | CN1507497A Extraction process |
| 06/22/2004 | CA2306015C A method of purifying acid leaching solution |
| 06/17/2004 | WO2004050925A1 Method for treating slag |
| 06/17/2004 | US20040112834 Mineral ore slurry viscosity modification method |
| 06/16/2004 | EP1428798A1 Method of treating heavy-metal-containing wastewater with sulfidizing agent and treatment apparatus |
| 06/16/2004 | CN1504585A Continuous production method for industrial grade high purity copper |
| 06/08/2004 | US6746512 Hydrometallurgical extraction of copper and other valuable metals |
| 06/03/2004 | WO2004046401A1 Method for obtaining copper by spraying a melt containing a copper raw material |
| 06/03/2004 | US20040103756 comprise circuit configuration for a plant with coutercurrent extraction stages and stripping section |
| 06/02/2004 | EP1424403A1 Procedure to agglutinate copper concentrates in a gravel heap, to be later leached on a non-flooded bed, to which an agglutinating solution containing calcium chloride, and a second solution containting sulfate ion, are added |
| 06/02/2004 | CN1500892A Refined method for copper materials containing copper sulphide minerals |
| 06/02/2004 | CA2450525A1 Process for leaching acid-consuming ores |
| 06/01/2004 | CA2301097C Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide or laterite ores |
| 06/01/2004 | CA2301096C Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 06/01/2004 | CA2254362C Composition and method for reducing copper oxide to metallic copper |
| 05/26/2004 | CN1498977A Method for recycling copper |
| 05/13/2004 | US20040091984 Method for the bacterially assisted heap leaching of chalcopyrite |
| 05/12/2004 | EP1204774B1 Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants |
| 05/11/2004 | US6733688 Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants |
| 05/11/2004 | US6733653 Electrowinning cell incorporating metal ion filtration apparatus |
| 05/11/2004 | US6733567 Bioleaching, oxidation |
| 05/05/2004 | CN1493715A Technological method of producing copper anode plate using fuel gas |
| 05/05/2004 | CN1493385A Equipment for draining two separable solutions from subsider |
| 05/05/2004 | CN1493384A Method and equipment for regulating interface of two solutions and making it separation |
| 05/04/2004 | US6730279 Forming aqueous slurry of low grade molybdenite concentrates; oxidizing; filtering discharge; leaching solid filter cake with an alkaline solution; filtering second discharge; recovering the molybdenum value; crystallization |
| 04/29/2004 | WO2004035868A1 Electrolysis process and cell for use in same |
| 04/29/2004 | WO2004035840A1 Method for the recovery of metals using chloride leaching and ex traction |
| 04/29/2004 | US20040079681 Recycle process for a metal bearing sludge concentrate |
| 04/29/2004 | CA2502650A1 Electrolysis process and cell for use in same |
| 04/28/2004 | EP1412557A2 Process for direct electrowinning of copper |
| 04/28/2004 | EP1412545A1 Method for improving metals recovery using high temperature pressure leaching |
| 04/28/2004 | CN1492079A Method for recovering stibium and bismuth from copper electrolyte |
| 04/27/2004 | US6726887 Composition of oxime and hydroxy-ester for the solvent extraction of metals |
| 04/27/2004 | CA2220263C Method and apparatus for removing deposit in non-ferrous smelting furnace |
| 04/22/2004 | WO2004033735A1 Method for removal of silver from a copper chloride solution |
| 04/14/2004 | EP1289628A4 Acid stable membranes for nanofiltration |
| 04/14/2004 | EP1173300A4 Casting of high purity oxygen free copper |
| 04/08/2004 | WO2004029333A2 Method and device for electroextraction of heavy metals from technological solutions and wastewater |
| 04/08/2004 | WO2004029306A1 Catalyzed dissolution of copper from sulfur-containing copper minerals |
| 04/08/2004 | WO2004028964A1 Low viscosity copper solvent extraction reagent formulations |
| 04/08/2004 | CA2499219A1 Low viscosity copper solvent extraction reagent formulations |
| 04/06/2004 | US6716403 Recovering a copper component from a cleaning agent that has been used for removing a phosphine or a silane contained as a harmful component in a harmful gas. |
| 04/01/2004 | WO2004027100A1 Introduction of microorganisms in bio-assisted heap leaching operations |
| 04/01/2004 | WO2004027099A1 Heap leach process |
| 04/01/2004 | US20040060395 Sulfidic iron-bearing copper concentrate is leached on the countercurrent principle, in a chloride environment with the aid of bivalent copper and an oxygen-bearing gas as a multistage continuous process |
| 04/01/2004 | CA2498949A1 Heap leach process |
| 03/31/2004 | CN1143717C Method and apparatus for adjusting the boundary surface between two solution and conducting both solution out of the separation part |
| 03/25/2004 | US20040055964 Comprises six-electrode-containing bipolar cylindrical electroreactor and application of alternating current |
| 03/18/2004 | WO2004022796A1 Process and apparatus for recovery of cyanide and metals |
| 03/18/2004 | WO2004022795A1 Process for recovering platinum group metals from material containing base metals |
| 03/18/2004 | WO2004022604A2 Solvent extraction process |
| 03/18/2004 | WO2004022486A1 High purity copper sulfate and method for production thereof |
| 03/18/2004 | US20040053185 Method and apparatus for feeding solid material and oxidizing gas into a suspension smelting furnace |
| 03/18/2004 | US20040051218 Cooling element |
| 03/18/2004 | CA2497993A1 Process for recovering platinum group metals from material containing base metals |
| 03/17/2004 | CN1483088A Method for leaching copper concentrate |
| 03/17/2004 | CN1142004C A method for extracting copper from an aqueous solution |
| 03/16/2004 | US6706186 Raising the viscosity and dispersing solution into drops; copper sulfate |
| 03/11/2004 | US20040047780 Extraction of a base metal such as Ni, Co or Zn, from a sulphide ore or concentrate containing copper and the base metal comprises the step of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic |
| 03/11/2004 | US20040045406 During metal recovery process from an ore, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend to passivate the reactive process or encapsulate the metal value |
| 03/11/2004 | US20040045405 The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction |
| 03/10/2004 | EP1242638B8 A process for the recovery of copper from aqueous solutions containing iodinated organic compounds |
| 03/10/2004 | CN1481447A Method and appts. for feeding solid material and oxidizing gas into suspension smelting furnace |
| 03/09/2004 | US6702872 Preventing oxime extractant degradation; employing ph adjustment or electromotive force reduction |
| 03/04/2004 | WO2003087416A9 Process for extracting platinum group metals |
| 03/03/2004 | EP1257676B1 Method for the production of blister copper in suspension reactor |
| 03/02/2004 | US6699302 High metal or alloy recoveries; producing very clean slags |
| 02/26/2004 | WO2004016816A1 Recovering nickel |
| 02/26/2004 | WO2004016376A1 Metal nanocrystals and synthesis thereof |
| 02/26/2004 | US20040038354 Establishing an environment wherein microorganisms oxidise a slurry containing metal sulphide minerals, supplying a feed gas containing in excess of 21% oxygen by volume to the slurry, and extracting bioproducts from the slurry |
| 02/25/2004 | EP1390113A1 Production of pure molybdenum oxide from low grade molybdenite concentrates |