| Patents for C22B 15 - Obtaining copper (5,364) |
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| 07/16/1997 | CN1154414A Process for briquetting copper ore concentrate |
| 07/08/1997 | US5645708 Chloride assisted hydrometallurgical copper extraction |
| 06/25/1997 | EP0700315A4 Multi-stage water treatment system |
| 06/19/1997 | WO1997021654A1 Process for reducing catalyst consumption and contaminated catalyst waste during the preparation of 1,2-dichloroethane |
| 06/12/1997 | DE19546068A1 Verfahren zur Reduzierung des Katalysatorverbrauchs und verunreinigter Katalysatorabfälle bei der Herstellung von 1,2-Dichlorethan Method of reducing the catalyst consumption and waste contaminated catalyst in the production of 1,2-dichloroethane |
| 06/04/1997 | CN1151190A Copper converting |
| 05/15/1997 | DE19541729A1 Recycling partly metallic materials, especially circuit board scrap |
| 05/13/1997 | US5628817 Method for leaching nickel-copper matte employing substantially neutral leaching solutions |
| 05/09/1997 | WO1997016574A1 A method for the treatment of bismuth-containing sulphide ores or concentrates of such ore |
| 05/07/1997 | EP0771363A1 Copper converting |
| 05/02/1997 | EP0700365A4 Method for recovering metals from solutions |
| 04/24/1997 | WO1997014825A1 Process for making copper metal powder, copper oxides and copper foil |
| 04/23/1997 | CN1148093A Method for recovering copper and chromium from waste industrial catalyst |
| 04/22/1997 | US5622615 Process for electrowinning of copper matte |
| 04/16/1997 | CN1147774A Method and device for treating composite elements |
| 04/09/1997 | EP0767243A1 Recovery of active components from carrier or monolythic catalysts |
| 04/09/1997 | EP0766749A1 Use of hydrocarbon-soluble aminomethylene phosphonic acid derivatives in the solvent extraction of iron ions from aqueous solutions |
| 04/03/1997 | WO1997012070A1 Process and apparatus for extracting metal |
| 04/01/1997 | US5616168 Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper |
| 04/01/1997 | CA2049276C Method of tellurium separation from copper electrorefining slime |
| 03/25/1997 | CA2039687C Method for operation of flash smelting furnace |
| 03/18/1997 | CA2074258C Method and device for recovery of scrap goods |
| 03/13/1997 | WO1997009453A1 Copper recovery process |
| 03/13/1997 | CA2230536A1 Copper recovery process |
| 03/06/1997 | WO1997007917A1 Process for the production of ultrafine particles |
| 03/05/1997 | CN1144541A Hydrometallurgical extraction process |
| 03/05/1997 | CN1144323A Method and apparatus for feeding reaction gas and solids |
| 03/04/1997 | US5607495 Oxygen smelting of copper or nickel sulfides |
| 02/27/1997 | WO1997007250A1 Fluorocarbon fluids as gas carriers to aid in precious and base metal heap leaching operations |
| 02/27/1997 | CA2227581A1 Fluorocarbon fluids as gas carriers to aid in precious and base metal heap leaching operations |
| 02/26/1997 | EP0758933A1 Manufacture of copper rod |
| 02/25/1997 | US5605563 Ion exchanging, precipitation, separation, circulation |
| 02/24/1997 | EP0771363A4 Copper converting |
| 02/20/1997 | WO1997006394A1 Metal fusion furnace and metal fusing method |
| 02/18/1997 | US5603750 Fluorocarbon fluids as gas carriers to aid in precious and base metal heap leaching operations |
| 02/13/1997 | WO1996041029A3 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 02/11/1997 | CA2074678C Copper smelting system |
| 02/06/1997 | WO1997004140A1 Hydrometallurical process for the recovery of copper from oxidized metal materials |
| 02/06/1997 | WO1997003754A1 Process for recovering copper from copper-containing material |
| 02/05/1997 | EP0756515A1 Leaching in the presence of abrasive |
| 01/29/1997 | CN1141350A Method for treatment of infusible fine copper ore |
| 01/16/1997 | WO1996031629A3 Process for treating impurity streams for disposal |
| 01/15/1997 | EP0739430A4 Process for making copper wire |
| 01/08/1997 | EP0752013A1 Hydrometallurgical extraction process |
| 01/08/1997 | EP0751831A1 Method and device for treating composite elements |
| 12/27/1996 | WO1996041902A1 Ammoniacal metal solution recycling process |
| 12/27/1996 | CA2224322A1 A process for working up ammoniacal metal solutions |
| 12/19/1996 | WO1996041029A2 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 12/19/1996 | WO1996041027A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/19/1996 | WO1996041026A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/19/1996 | DE19521352A1 Verfahren zur Aufarbeitung ammoniakalischer Metallösungen Process for working metal ammoniacal solutions |
| 12/19/1996 | CA2456772A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/12/1996 | WO1996039550A1 Method for recovering copper |
| 12/12/1996 | CA2222418A1 Method for recovering copper |
| 12/11/1996 | CN1137809A Process for making copper wire |
| 12/10/1996 | CA1338772C Anionic acrylamide polymers as copper ore agglomeration aids |
| 12/05/1996 | WO1996038381A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/05/1996 | DE19618845A1 Reaction gas and particle feed to a suspension furnace |
| 12/04/1996 | EP0745439A2 Process for removing heavy metals from soil |
| 12/04/1996 | EP0745438A2 Process for removing heavy metals from soil |
| 12/03/1996 | CA2008167C Method and apparatus for manufacturing high-grade nickel matte |
| 11/20/1996 | EP0641394B1 Oxygen smelting |
| 11/12/1996 | US5574956 Oxidizing molten matte, smelting |
| 11/12/1996 | US5573739 Selective bismuth and antimony removal from copper electrolyte |
| 11/06/1996 | CN1134989A Method of recovering antimony and bismuth from copper electrolyte |
| 10/30/1996 | EP0739430A1 Process for making copper wire |
| 10/16/1996 | EP0677118B1 Hydrometallurgical recovery of metals from complex ores |
| 10/16/1996 | CN1133347A Refining agent for molten copper and preparation method |
| 10/15/1996 | US5565016 Method for suspension smelting |
| 10/10/1996 | WO1996031629A2 Process for treating impurity streams for disposal |
| 10/10/1996 | CA2216119A1 Process for treating impurity streams for disposal |
| 09/26/1996 | WO1996029439A1 Atmospheric mineral leaching process |
| 09/18/1996 | CN1131199A Method for leaching nickel-copper matte |
| 09/17/1996 | CA2014733C Treatment of high nickel slimes |
| 09/06/1996 | WO1996027030A1 Hydrometallurgical process for the extraction of copper from sulphidic concentrates |
| 08/22/1996 | WO1996025525A1 Modifiers for aldoxime extractant of metal values |
| 08/22/1996 | WO1996025361A1 Copper precipitation process |
| 08/22/1996 | CA2212378A1 Copper precipitation process |
| 08/14/1996 | EP0641393A4 Method for melting copper. |
| 08/06/1996 | US5542361 Method for adjusting the supply of a reaction gas to be fed into a smelting furnace, and a multipurpose burner designed for realizing the same |
| 07/23/1996 | CA2008063C Hydrometallurgical leaching process and apparatus |
| 07/16/1996 | US5536297 Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
| 07/03/1996 | CN1125962A Method for treatment of residues from organochlorosilane and/or chlorosilansynthesis |
| 07/02/1996 | CA1338426C Nitrogen / air blasts in ni-cu converters |
| 06/27/1996 | WO1996019593A1 Chloride assisted hydrometallurgical copper extraction |
| 06/25/1996 | US5529291 Circulating fluidized bed direct reduction system |
| 06/19/1996 | CN1124782A Copper fine-powdery agglomeration and preparing process thereof |
| 06/18/1996 | US5527382 Hydrometallurgical process for the treatment of copper bearing ore |
| 06/12/1996 | CN1124298A Copper smelting apparatus |
| 06/12/1996 | CN1124297A Technique for producing metal by directly smelting sulphide ore |
| 06/11/1996 | CA1338370C Process for recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals |
| 05/28/1996 | US5520792 Process for making copper metal powder, copper oxides and copper foil |
| 05/14/1996 | US5516408 Below the melting point, leaching, solvent extraction, electrodeposition |
| 05/09/1996 | WO1996013624A1 Process for making copper wire |
| 05/03/1996 | CA2134941A1 Reclamation of metal plate |
| 04/30/1996 | US5511767 Copper smelting apparatus |
| 04/24/1996 | CN1121361A Process for making copper foil |
| 04/24/1996 | CN1121360A Process for making copper metal powder, copper oxides and copper foil |
| 04/17/1996 | EP0538278B1 Reclamation of metal from scrap |
| 04/10/1996 | CN1120355A Hydrometallurgical recovery of metals from complex ores |