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Copper extraction - Hydrometallurgical Extraction | | Copper extraction - Hydrometallurgical Extraction: Encyclopedia II - Copper extraction - Hydrometallurgical Extraction | |
Copper extraction - Oxide ores.
Oxide ores are readily leached by sulfuric acid, usually using a heap leach or dump leach process in combination with solvent extraction and electrowinning technology (SX-EW). Commonly sulfuric acid is used as a leach for copper oxide, although it is possible to use water. There have been examples where froth flotation was used to concentrate malachite. In general froth flotation is not used to concentrate copper oxide ores, as the cost of leaching is cheap when compared to the cost of grinding and flotation. The implication of this is th ...
See also:Copper extraction, Copper extraction - Mining, Copper extraction - Primary orebody formation, Copper extraction - Orebody oxidization, Copper extraction - Secondary orebody enrichment, Copper extraction - Mines, Copper extraction - Reclamation and Regulation, Copper extraction - Hydrometallurgical Extraction, Copper extraction - Oxide ores, Copper extraction - Secondary ores, Copper extraction - Pyrometallurgical Extraction, Copper extraction - Concentration, Copper extraction - Roasting, Copper extraction - Smelting, Copper extraction - Conversion to Blister, Copper extraction - Reduction, Copper extraction - Electorefining | | | Copper extraction, Copper extraction - Concentration, Copper extraction - Conversion to Blister, Copper extraction - Electorefining, Copper extraction - Hydrometallurgical Extraction, Copper extraction - Mines, Copper extraction - Mining, Copper extraction - Orebody oxidization, Copper extraction - Oxide ores, Copper extraction - Primary orebody formation, Copper extraction - Pyrometallurgical Extraction, Copper extraction - Reclamation and Regulation, Copper extraction - Reduction, Copper extraction - Roasting, Copper extraction - Secondary orebody enrichment, Copper extraction - Secondary ores, Copper extraction - Smelting, Metallurgy, Extractive metallurgy, Smelting | | |
| | | Copper extraction: Encyclopedia II - Copper extraction - Hydrometallurgical Extraction
Copper extraction - Hydrometallurgical Extraction
Copper extraction - Oxide ores
Oxide ores are readily leached by sulfuric acid, usually using a heap leach or dump leach process in combination with solvent extraction and electrowinning technology (SX-EW). Commonly sulfuric acid is used as a leach for copper oxide, although it is possible to use water. There have been examples where froth flotation was used to concentrate malachite. In general froth flotation is not used to concentrate copper oxide ores, as the cost of leaching is cheap when compared to the cost of grinding and flotation. The implication of this is that copper oxides are more economic to process than copper sulfides.
Copper extraction - Secondary ores
Secondary sulfides - those formed in secondary enrichment - are resistant (refractory) to sulfuric leaching. High grade secondary sulfides may be concentrated using froth flotation, and subsequently smelted to recover the copper, or else they can be leached using a bacterial oxidation process to oxidize the sulfides to sulfuric acid, which also allows for simultaneous leaching with sulfuric acid. As with oxide ores, solvent extraction and electrowinning technologies are used to recover the copper from the pregnant leach solution.
Other related archivesArizona, As of 2005, Atacama, Atacamite, Azurite, Bornite, Canada, Chalcocite, Chalcopyrite, Chile, Chrysocolla, Chuquicamata, Covellite, Cu, CuS, Cuprite, El Chino mine, Extractive metallurgy, Fe, FeO, Kazakhstan, London, Malachite, Mauritania, Metallurgy, Montana, Native Copper, New Mexico, New York, Poland, S2, SO2, SX-EW, Shanghai, Smelting, Sulfur dioxide, Tenorite, United States, Utah, Zambia, alunite, anode, anodes, bacterial oxidation, calcine, cathode, chalcopyrite, commodity, copper, copper concentrate, electrolysis, electrolytic, electrowinning, elements, exothermic, flotation, froth flotation, geothermal, goethite, gossan, grinding, hydrophobic, hydrothermal, jarosite, leached, limestone, limonite, malachite, mineral, minerals, natural gas, open pit mines, ore, pH, porphyry copper deposits, precipitate, pregnant leach solution, pyrite, pyrometallurgical, reactions, reagents, refractory, silica, sintered, slag, smelted, solvent extraction, stoichiometry, sulfur dioxide, sulfuric acid, surface, surfactant, tailings, xanthate
 Adapted from the Wikipedia article "Hydrometallurgical Extraction", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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