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Up to10%cash back· The Cuprex metal extraction process produces cathodegrade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel steps to overcome the major problems associated with earlier chloridebased processes, including mild leaching conditions using ferric chloride as leachant and solvent extraction of copper
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1. A method for extraction of copper from sulphide ores or concentrates by leaching the ore or concentrates by means of iron (III) chloride and copper (II) chloride containing leach solution, characterized in that the leaching process is regulated in order to keep the redox potential between 430 mV and 460 mV whereby iron (III) chloride is reduced to iron (II) chloride while copper (II
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Aug 13, 2018· Recent work has dealt with the understanding of chloride extraction thermodynamics by modelling the behavior of metal chloride complexes. BHAS initially developed a chloride/sulfate leach for processing a copper sulfide byproduct from lead smelting. A 5 k ton per year copper production plant is being installed to handle the copper/lead matte.
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the sulfide ore and the recovery of its valuable metals. Nerco has provided funding on an annual basis. Information contained in this publication is a result of this research. Within the research program, complex sulfide ores are treated by ferric chloride leaching to dissolve zinc, lead, copper and silver.
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copper extraction, 50.23%, was achieved at 32.9 C with the addition of 0.6 kg of H 2SO4 per ton of ore, 0.525 kg of NaCl per ton of ore, and 0.5 kg of FeSO4 per ton of ore. In respect to copper
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The method of selection, extraction and recovery of nickel, cobalt and copper from sulphide flotation concentrate, stimulated by chlorine, by oxidative leaching with sulfuric acid under pressure C22B3/08
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Key words lowgrade ores; copper minerals; column leaching. 1. Introduction The highest quantities of copper, lead and zinc in the world are obtained by sulphide ore treatment. The reserves of highgrade ores from which the extraction of nonferrous, rare and noble metals is technologically and economically feasible are
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Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chlorideferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the
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Feb 28, 1990· 23. A process for extracting precious metals from sulfide ore, comprising contacting an ore, which contains elemental and sulfidic metals selected from the group of platinum group metals, gold, silver, iron, or copper, with salt, which contains greater than 60% potassium chloride, in the substantial absence of added promoter metal chlorides to produce an ore/salt mixture having a salt to
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By using chloride solutions, copper extraction with hydroxyoximes is easier to accomplish. It takes place at a lower pH and is more pronounced than from sulphate media. In chloride systems, extraction isotherms are steeper than in sulphate systems and even at pH 1 a relatively high loading of
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Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different
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Copper recovery in solution, along with a high redox potential, was established faster in the mesophilic column but leveled off quickly over time. Copper extraction showed that the 6 g/l chloride column has the highest metallurgical performance (83% CuT) with 4 extra points of copper recovery over the 1.5 g/L and 3 g/l Cl
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Mar 01, 2017· Primary copper sulfides are the most economically relevant due to their abundance. Therefore, several technologies have been developed in order to achieve an efficient copper extraction from these types of copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for copper sulfides due to their good results at lab, pilot and
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The minerals from the copper mines of Arizona, USA specifically the great mines of Bisbee, Tiger, Tombstone, Morenci, Mammoth and Ajo, Arizona, are the result of the supergene enrichment and hydrothermal alteration of a porphyry copper sulfide intrusion.Copper extraction from primary copper sulfide ore from a typical porphyry copper
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The minerals from the copper mines of Arizona, USA specifically the great mines of Bisbee, Tiger, Tombstone, Morenci, Mammoth and Ajo, Arizona, are the result of the supergene enrichment and hydrothermal alteration of a porphyry copper sulfide intrusion.Copper extraction from primary copper sulfide ore
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copper extraction, 50.23%, was achieved at 32.9 C with the addition of 0.6 kg of H 2SO4 per ton of ore, 0.525 kg of NaCl per ton of ore, and 0.5 kg of FeSO4 per ton of ore. In respect to copper
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Oct 29, 2017· 484 views. asked Oct 29, 2017 in Class X Science by priya12 (12,165 points) Explain the steps for extraction of copper from its sulphide ore. Write the balanced equations involved in the process.
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Jul 25, 2018· Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chlorideferrous media at two temperatures.
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The extraction of 0.0011 M copper(II) with 0.05 M to 1.0 M Cyanex 921 in kerosene from 5 M HCl solution was carried out. The percentage extraction of copper increased with increasing extractant concentration. At 0.05 M, the extraction of copper was only 23.05 per cent, whereas it rose
ChatJan 10, 2017· The roasted ore contains chloride of silver, which does not dissolve in water, but generally there are also base chlorides in it, as the chlorides of copper, zinc, lead, iron, antimony, etc., which are soluble. It is the purpose of the first leaching to extract these base metals by means of hot water.
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Abstract. Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl 3 as oxidizing agent and ethylene glycol (EG) as organic solvent).
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9 rows· copper sulphide leaching options as alternatives to the more conventional pyrometallurgical
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Abstract. Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chlorideferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale.
Cited by 7ChatIn the extraction of copper from its sulphide ore, when ore is subjected to roasting, some of it is oxidised to Cu 2 O which reacts with the remaining Cu 2 S (sulphide ore) to give copper metal. Cu 2 S 2Cu 2 O 6Cu SO 2 In this process, Cu 2 S behaves as reducing agent.
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Aug 13, 2018· Recent work has dealt with the understanding of chloride extraction thermodynamics by modelling the behavior of metal chloride complexes. BHAS initially developed a chloride/sulfate leach for processing a copper sulfide byproduct from lead smelting. A 5 k ton per year copper production plant is being installed to handle the copper/lead matte.
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Sulfide in the mineral is oxidised to sulfate without the generation of SO2 or H2S. The best selective recovery of copper (99 at%) from chalcopyrite was obtained with a mixed DES of 20 wt% choline chlorideoxalic acid and 80 wt% choline chlorideethylene glycol.
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A review of chloride assisted copper sulfide leaching by oxygenated sulfuric acid and mechanistic considerations G. Senanayake by conventional solvent extraction, stripping as sulfate, electrowinning, and iron leaching of copper sulfide ores/concentrates and mechanistic considerations, with
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Jan 01, 2012· 1.2. Chalcopyrite Ore Production The sulfide ore minerals including chalcopyrite (CuFeS 2), sphalerite (ZnS), galena (PbS) provide the major sources of the worlds base metals (Cu, Zn, Pb, respectively), whereas pyrite is virtually ubiquitous as a metalliferous mineral in sulfide ore deposits (Crang and Vanghan, 1994).The first step in recovering metal from their mineral is that of finding
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In this work, we have compared bioleaching and chemical chloride leaching technologies (including sulfuric acidsodium chloride ore pretreatment) for a mainly primary copper sulfide ore. This comparative analysis showed first that bioleaching and chemical chloride leaching work at completely different range of redox potential as expected.
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A higher temperature (45 #176;C) and a higher chloride concentration (40 g/L) negatively affected the extraction. The pretreatment stage had favorable effects, in terms of accelerating copper dissolution and improving leaching of copper sulfide ore in acidnitratechloride media.
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