| Patents for C22B 15 - Obtaining copper (5,364) |
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| 12/22/1982 | EP0067626A1 Distillation process for separating silver and copper chlorides |
| 12/07/1982 | US4362702 Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 12/07/1982 | US4362607 Recovery of copper and zinc from complex chloride solutions |
| 11/16/1982 | US4359376 Recovering copper from a copper-bearing source |
| 11/02/1982 | US4357261 Method for manufacture of a composite copper-arsenic compound mixture |
| 10/19/1982 | US4355005 Process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 10/12/1982 | US4353530 Method and apparatus for automatically punching the tuyeres of a converter |
| 09/28/1982 | US4351705 Refining copper-bearing material contaminated with nickel, antimony and/or tin |
| 09/21/1982 | US4350667 Extraction of copper from an ammoniacal copper solution |
| 09/14/1982 | US4349383 Copper-free slags by reducing a mixture of slags obtained from the smelting and blistering ore |
| 09/07/1982 | CA1131033A1 Recovery of silver, copper, zinc and lead from partially roasted pyrite concentrate by acid chloride leaching |
| 08/31/1982 | CA1130934A1 Process for the recovery of copper and zinc values from sulphidic ore |
| 08/31/1982 | CA1130572A1 Treating copper-bearing materials with a heterocyclic amine and a halogenated hydrocarbon to recover metal values therefrom |
| 08/31/1982 | CA1130571A1 Process for reducing copper-bearing materials |
| 08/24/1982 | CA1130237A1 Recovery of copper and zinc from complex chloride solutions |
| 08/18/1982 | EP0057797A2 Process for the extraction of metal values and novel metal extractants |
| 08/11/1982 | EP0057383A1 Method of producing copper powder with large surface area |
| 08/11/1982 | EP0057306A1 Method of disposing of spent organic complexing solutions containing cuprous halides |
| 07/27/1982 | US4341742 Cuprous chloride production from chalcopyrite |
| 07/06/1982 | US4338168 Hydrometallurgical treatment of copper-bearing hematite residue |
| 06/29/1982 | US4337226 Recovery of platinum-group metals from ores |
| 06/29/1982 | US4337128 Redox systems |
| 06/29/1982 | US4337086 Separation of mineral particles by size, compaction, flash oxidati |
| 06/29/1982 | CA1126507A1 Furnace for refining non-ferrous metals |
| 06/22/1982 | CA1126292A1 Catalyst metal separation from saturated aliphatic monocarboxylic acids |
| 06/16/1982 | EP0053848A1 Process for injecting gases rich in oxygen into a molten non-ferrous metal bath |
| 06/15/1982 | US4334925 Of reduced copper content |
| 06/15/1982 | US4334924 Reduction of slag with iron-sulfur, removal of sulfur and iron by oxidation |
| 06/15/1982 | US4334918 Method of recovering non-ferrous metals from their sulphide ores |
| 06/15/1982 | CA1125519A1 Metal recovery |
| 06/10/1982 | WO1982001895A1 Metal recovery process and dross collection receptacle |
| 06/09/1982 | EP0053406A1 Process for the extraction of non-iron metals from residues that contain iron |
| 06/08/1982 | US4333762 Low temperature, non-SO2 polluting, kettle process for the separation of antimony values from material containing sulfo-antimony compounds of copper |
| 05/27/1982 | WO1982001725A1 A method for separating and recovering nickel and copper from complex materials |
| 05/26/1982 | EP0052595A1 A method for separating and recovering nickel and copper from complex materials |
| 05/26/1982 | EP0052253A2 Process for winning metals from aqueous solutions |
| 05/25/1982 | US4331635 Recovery of copper and/or nickel and/or zinc |
| 05/25/1982 | US4331520 Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 05/18/1982 | US4330328 Process and apparatus for making a metal alloy |
| 05/18/1982 | US4330327 Disposable bed filter process and apparatus |
| 05/18/1982 | CA1123610A1 Recovery of copper from materials containing copper and acid soluble iron compounds |
| 05/11/1982 | US4329170 Smelting, combustion |
| 05/11/1982 | CA1123372A1 Electrowinning slurry prepared by acid leaching and precipitation of copper with calcium sulfite |
| 05/10/1982 | EP0040243A4 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 04/27/1982 | US4326702 Sprinkler burner for introducing particulate material and a gas into a reactor |
| 04/20/1982 | US4325538 Smelting furnace for direct obtaining of copper from ore concentrates/and copper ores |
| 04/15/1982 | WO1982001197A1 Cuprous chloride production from chalcopyrite |
| 04/13/1982 | US4324582 Process for the recovery of copper from its ores |
| 04/13/1982 | CA1121605A1 Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphates |
| 04/06/1982 | US4323541 Selective two stage leaching of nickel from nickel-copper matte |
| 04/06/1982 | US4323539 Apparatus for continuously leaching ore |
| 03/30/1982 | US4322390 Hydrometallurgical recovery of copper, cobalt nickel with reductive and oxidative leaching |
| 03/24/1982 | EP0047742A1 A process for recovering non-ferrous metal values from ores, concentrates, oxidic roasting products or slags. |
| 03/23/1982 | US4321089 Process for the recovery of molybdenum and rhenium from their sulfide ores |
| 03/16/1982 | CA1119817A1 Method for the recovery of metallic copper |
| 03/16/1982 | CA1119816A1 Low energy process for the recovery of copper from ammonia solutions via copper sulphite |
| 03/16/1982 | CA1119815A1 Pyrometallurgical smelting of lead and copper |
| 03/09/1982 | US4318737 Copper refining and novel flux therefor |
| 03/09/1982 | CA1119417A1 Continuous process of converting non-ferrous metal sulfide concentrates |
| 03/02/1982 | US4317804 Process for the selective removal of ferric ion from an aqueous solution containing ferric and other metal ions |
| 03/02/1982 | US4317803 Recovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphates |
| 03/02/1982 | CA1119343A1 Selective ion exchange media |
| 02/23/1982 | US4316742 Copper refining |
| 02/17/1982 | EP0045850A1 Method of separating metals from aqueous solutions |
| 02/17/1982 | EP0045746A1 A method of purifying non-ferrous metal melts from foreign elements |
| 02/16/1982 | US4315775 Continuous melting and refining of secondary and/or blister copper |
| 02/16/1982 | US4315774 Method of safely injecting oxygen reactive materials into a submerged oxygen gas stream |
| 02/09/1982 | CA1117897A1 Continuous process for the purification of zinc plant electrolyte |
| 02/09/1982 | CA1117772A1 Nitric acid-oxygen leaching of sulfidic minerals |
| 01/26/1982 | US4312667 Method of forming large, minimal grain copper billet |
| 01/26/1982 | CA1116873A1 Process for beneficiating metal-bearing materials |
| 01/26/1982 | CA1116869A1 Recovery of copper from arsenic-containing metallurgical waste materials |
| 01/19/1982 | US4311519 Melting copper |
| 01/12/1982 | CA1116158A1 Impregnated polymers |
| 12/29/1981 | US4308239 Obtaining copper (I) chloride from ores with acetonitrile |
| 12/29/1981 | US4308058 Blasting oxygen-enriched air into metal layer while maintaining layer thickness |
| 12/29/1981 | US4307871 Apparatus for automatically punching the tuyeres of a converter |
| 12/16/1981 | EP0041841A1 Process for the recovery of metals from their ores |
| 12/15/1981 | CA1114175A1 Process for the recovery of zinc, copper and cadmium in the leaching of zinc calcine |
| 12/15/1981 | CA1114174A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 12/08/1981 | US4304644 Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt |
| 12/08/1981 | US4304599 Heavy metal removal process |
| 12/01/1981 | US4303229 Mechanical punching device for punching the tuyeres of a converter |
| 12/01/1981 | CA1113253A1 Process for the treatment of raw materials containing arsenic and metal |
| 11/25/1981 | EP0040243A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 11/24/1981 | CA1112880A1 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 11/17/1981 | US4300949 Method for treating sulfide raw materials |
| 11/17/1981 | CA1112602A1 Process and apparatus for mixing and separation in a solvent extraction |
| 11/10/1981 | CA1112052A1 Refining method for non ferrous metal mattes |
| 11/03/1981 | CA1111658A1 Method of producing blister copper from copper raw material containing antimony |
| 10/28/1981 | EP0038608A1 Apparatus for refining molten metal |
| 10/13/1981 | US4294434 Heavy metal removal apparatus |
| 10/06/1981 | CA1110078A1 Method and apparatus for the refining of melts by means of a pulverous solid material and/or a gas |
| 10/06/1981 | CA1110077A1 Copper leaching process employing nitrogen dioxide |
| 10/06/1981 | CA1110076A1 Metal leaching from concentrates using nitrogen dioxide in acids |
| 09/30/1981 | EP0036768A1 Separation of antimony |
| 09/29/1981 | US4292281 Selective leaching of chloride from copper oxide minerals |
| 09/23/1981 | EP0036401A1 A reagent and a method for the extraction of copper from an ammoniacal copper solution |
| 09/22/1981 | US4290865 Recovering copper from a copper-bearing source |
| 09/22/1981 | US4290588 Apparatus for refining molten aluminum |