| Patents for C22B 15 - Obtaining copper (5,364) |
|---|
| 10/01/1980 | EP0016595A1 A method of recovering non-ferrous metals from their sulphide ores |
| 10/01/1980 | EP0015938A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 09/30/1980 | CA1086505A1 Roast-leach copper recovery |
| 09/23/1980 | US4224122 Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphates |
| 09/23/1980 | CA1086072A1 Leaching of copper dross |
| 09/16/1980 | US4222999 Reduction, oxidation, hydrolysis |
| 09/16/1980 | CA1085620A1 Process for the production of blister copper from ores and concentrates |
| 09/02/1980 | US4220726 Polystyrene or copolymer; complexing |
| 09/02/1980 | US4220627 Process for the treatment of raw materials containing arsenic and metal |
| 09/02/1980 | CA1084719A1 Process for treating lead-copper-sulphur charges |
| 09/02/1980 | CA1084716A1 Copper recovery from sulfate solutions |
| 08/26/1980 | US4219354 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 08/26/1980 | CA1084276A1 Decomposition leach of sulfide ores with chlorine and oxygen |
| 08/19/1980 | CA1083828A1 Extraction of copper values from aqueous solutions with hydroxy-oximes |
| 08/12/1980 | CA1083524A1 Hydrometallurgical process for the production of copper |
| 07/29/1980 | US4214900 Production of nonferrous metals with low selenium contents |
| 07/29/1980 | CA1082467A1 Method of recovering non-ferrous metals from sulphidic materials |
| 07/15/1980 | CA1081471A1 Pressure leaching of sulfides |
| 07/15/1980 | CA1081470A1 Process for removal of selenium and tellurium from copper bearing liquors |
| 07/15/1980 | CA1081469A1 Sodium sulfide leach process |
| 07/08/1980 | US4211556 Reverberatory smelting of non-ferrous metal sulfide ores |
| 07/08/1980 | US4211555 Method of controlling combustion in a metal melting furnace |
| 07/08/1980 | US4211553 Method of refining of melts by means of a pulverous solid material and/or a gas |
| 07/08/1980 | CA1080979A1 Method for precipitating metal cement from a solution mixed with a precipitant |
| 07/01/1980 | US4210441 Method for the continuous or discontinuous treatment of molten slag, particularly with contents of heavy metal oxides, for the recovery of portions contained therein of valuable metals or their combinations, respectively |
| 07/01/1980 | CA1080485A1 Method and apparatus for carrying out wet metallurgical processes |
| 07/01/1980 | CA1080484A1 Recovery of metal values |
| 07/01/1980 | CA1080482A1 Process and apparatus for thermal refining of highly contaminated copper in the molten phase |
| 06/26/1980 | WO1980001287A1 Direct production of copper metal |
| 06/10/1980 | CA1079073A1 Oxygen control in continuous metal casting system |
| 06/03/1980 | CA1078627A1 Method for continuously refining contaminated copper in the molten phase |
| 05/27/1980 | US4204861 Method of producing blister copper |
| 05/27/1980 | CA1078191A1 Method of recovery of metal compounds and metals from nitrate solutions |
| 05/27/1980 | CA1078190A1 Process for the refining of a metal sulfide melt |
| 05/20/1980 | CA1077725A1 Process for obtaining metal values by leaching raw sea nodules |
| 05/13/1980 | CA1077279A1 Catalytic hydrogen reduction of metals from solutions |
| 05/06/1980 | US4201748 Process for thermal-activation of chalcopyrite-pyrite concentrates |
| 05/06/1980 | US4201573 Using the slag as an agitation medium |
| 05/06/1980 | CA1076816A1 Liquid-liquid extraction of metal values from aqueous solution |
| 04/30/1980 | EP0010367A1 Method of recovering metal values |
| 04/29/1980 | US4200455 Reduction, extraction, compounds, metal |
| 04/29/1980 | US4200265 Furnace for the melting and refining of copper |
| 04/22/1980 | US4199352 Sulfur trioxide as protective fluid |
| 04/16/1980 | EP0009635A1 Method for producing sulphidic copper concentrates |
| 04/15/1980 | CA1075473A1 Copper extraction by arc heater |
| 04/15/1980 | CA1075467A1 Process for extracting metal values from manganese nodules |
| 04/08/1980 | US4197117 Recovery of copper by ferrous ion precipitation |
| 04/08/1980 | CA1075015A1 Process for working up manganese modules and recovery of the contained valuable constituents |
| 04/08/1980 | CA1074996A1 Flash smelting furnace |
| 04/01/1980 | CA1074727A1 Process for recovering electrolytic copper of high purity by means of reduction electrolysis |
| 04/01/1980 | CA1074530A1 Methods of separating and recovering copper from materials containing copper |
| 03/25/1980 | US4194905 Solvent-extraction process for recovery and separation of metal values |
| 03/18/1980 | CA1073682A1 Fluidized hydrogen reduction process for recovery of copper |
| 03/18/1980 | CA1073681A1 Recovery of precious metals from metal sulphides |
| 03/11/1980 | US4192676 High temperature reduction of copper salts |
| 03/11/1980 | CA1073217A1 Recovery of metal values from basic aqueous ammoniacal leach liquor |
| 03/11/1980 | CA1073216A1 Method of separating zinc and copper from aqueous solutions |
| 03/11/1980 | CA1073215A1 Production of blister copper directly from roasted copper-iron sulfide concentrates |
| 03/05/1980 | EP0008468A1 Refining furnace for non-ferrous metals |
| 02/26/1980 | CA1072344A1 Cyclic extraction of nickel, copper and cobalt from sulphide ore |
| 02/26/1980 | CA1072343A1 Process and device for suspension smelting of finely-divided sulfidic and/or oxidic ores or concentrates |
| 02/19/1980 | US4189461 Metal leaching from concentrates using nitrogen dioxide in acids |
| 01/29/1980 | CA1070504A1 Method for removing arsenic from copper electrolytic solutions or the like |
| 01/08/1980 | CA1069317A1 Recovery of copper from chalcopyrite |
| 01/08/1980 | CA1069316A1 Treatment of ores or metallurgical by-products containing arsenic and antimony |
| 12/25/1979 | CA1068643A Extraction of copper by mixing finally dispersed oxygen with material slurry |
| 12/13/1979 | WO1979001056A1 High temperature reduction of copper salts |
| 12/11/1979 | US4178174 Direct production of copper metal |
| 12/04/1979 | US4177067 Oxidation, reduction |
| 11/27/1979 | CA1066870A1 Process for the recovery of cuprous chloride in the presence of metal impurities |
| 11/15/1979 | WO1979000906A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 11/13/1979 | CA1066062A1 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 11/13/1979 | CA1066061A1 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 11/06/1979 | CA1065615A1 Hydrometallurgical purification process |
| 11/06/1979 | CA1065577A1 Cuprous chloride recovery process |
| 10/30/1979 | US4172785 Process for the separation of Cu++ -ions from sewage, waste water and aqueous solutions |
| 10/30/1979 | CA1065143A1 Recovery of copper from chalcopyrite utilizing copper sulfate leach |
| 10/30/1979 | CA1065142A1 Selenium rejection during acid leaching of matte |
| 10/23/1979 | CA1064854A1 Method of extracting constituent metal values from pyrometallic nodules from the sea |
| 10/23/1979 | CA1064711A1 Extraction method for non-ferrous metals |
| 10/23/1979 | CA1064710A1 Method and apparatus for reduction of molten copper with liquid ammonia |
| 10/16/1979 | US4171216 Process for refining non-ferrous matte |
| 10/09/1979 | CA1063967A1 Zinc hydrometallurgical process |
| 10/09/1979 | CA1063809A1 Hydrometallurgical process for metal sulphides |
| 09/25/1979 | US4168969 Oxidation and reduction leaching, desulfurization |
| 09/18/1979 | US4168217 Roast-leach copper recovery |
| 09/18/1979 | US4168156 Method of and electric furnace for processing nonferrous molten slags |
| 09/18/1979 | CA1062514A1 Reduction smelting of manganese nodules with a liquid reductant |
| 09/05/1979 | EP0003853A1 Process for continuously converting non-ferrous metal sulphide concentrates |
| 09/04/1979 | CA1061572A1 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 09/04/1979 | CA1061571A1 Cuprion process start-up control |
| 09/04/1979 | CA1061570A1 Manganese nodules for oxidation leaching |
| 09/04/1979 | CA1061568A1 Process for extracting metal values from manganiferous ocean floor nodule ore |
| 08/28/1979 | CA1061283A1 Process for removing copper from copper anode slime |
| 08/28/1979 | CA1061282A1 Electrolytic recovery of metal from dispersion using cationic ion exchange agent |
| 08/21/1979 | US4165264 Metal carbonates, formation of ammonia and carbon dioxide, copper from copper sulfide |
| 08/14/1979 | US4164416 Metal recovery process |
| 08/14/1979 | CA1060219A1 Process for leaching raw sea nodules |
| 08/14/1979 | CA1060217A1 Process for separating nickel, cobalt and copper |
| 08/14/1979 | CA1060215A1 Refining of manganese oxide ores |