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copper concentrate leaching process

  • DEVELOPMENT OF A GLYCINE-CYANIDE LEACH PROCESS

    circuit where pyrite is depressed and copper is concentrated to produce a copper concentrate for sale to smelters. Pyrite is then re-activated and concentrated to produce a pyrite concentrate that is then re-ground and fed to a cyanidation leaching process. Products include gold doré and copper concentrate.

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  • Cyanide Leaching to Extract Copper from Zinc Concentrate

    The extraction of gold and silver from ores with alkaline cyanide solutions is well known. Cyanide solutions are also good solvents for many base metal minerals particularly most of the copper minerals. Leaver and Woolf who determined the solubilities of copper minerals in 0.10 pct sodium cyanide solution showed that malachite cuprite chalcocite and bornite are readily soluble in cyanide

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  • New breakthrough copper recovery process developed by

    Nov 09 2018 · The rapid leach kinetics and high copper recoveries place FL ROL s process economics on par with stirred-tank leaching of secondary copper sulphide concentrates. The key to the high performance of the process is the use of very low energy inter-stage or intra-stage attrition along with the activation of the mineral to enhance the

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  • Copper ConcentratesCargo Handbookthe world s largest

    Copper concentrates are then submitted to a final filtration and drying process to decrease the humidity to 8-9 . Production Process Mainly copper goes through different stages and degrees of refinement to a lesser extent the byproducts such as molybdenum sulfuric acid and precious metals that come with copper in the ore.

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  • Copper processingRoasting smelting and converting

    Copper processingCopper processingRoasting smelting and converting Once a concentrate has been produced containing copper and other metals of value (such as gold and silver) the next step is to remove impurity elements. In older processes the concentrate containing between 5 and 10 percent water is first roasted in a cylindrical refractory-lined furnace of either the hearth or

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  • Cyanide Leaching to Extract Copper from Zinc Concentrate

    The extraction of gold and silver from ores with alkaline cyanide solutions is well known. Cyanide solutions are also good solvents for many base metal minerals particularly most of the copper minerals. Leaver and Woolf who determined the solubilities of copper minerals in 0.10 pct sodium cyanide solution showed that malachite cuprite chalcocite and bornite are readily soluble in cyanide

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  • First Chalcopyrite Copper Concentrate Leaching using

    the region and wanted to prove up the concept of sulphide copper leaching at a commercial scale using the Albion Process TM. A very cheap retrofit was undertaken on the existing oxide leach circuit and then fed a predominantly chalcopyrite/bornite concentrate (28-30 Cu).

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  • Big Guns in Copper Conc Leaching Race

    WMT are currently focusing on nickel/cobalt/copper type ores and copper concentrates with impurities that are difficult to handle by smelting. The treatment of copper/gold concentrates will be an area of increasing future focus. Mt Gordon Ferric Leach Process This process is in successful commercial operation at Western Metals Mt Gordon

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  • Pressure Leaching of Copper Concentrates

    20 October 25th 2004 Phelps Dodge Concentrate Leaching Milestones 2Q 1998 Sulfate-based concentrate leaching development started Batch testwork at Hazen Research Dawson and Phelps Dodge Process Technology Center Continuous Pilot Plant Testing 3Q 2001 Technology Development Agreement executed with Placer Dome

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  • Leaching of Copper SulphidesSAIMM

    POX in a copper heap leach circuit. Figure 2. Simplified ferric leaching flowsheet. Figure 3. Copper chloride leach process. Leaching Chemistry As outlined earlier the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the

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  • CESL ProcessTeck

    Pressure Oxidation All copper minerals are oxidized into an acid-soluble solid (basic copper sulphate). Example Oxidation of chalcopyrite (6CuFeS 2 7.5O 2 2H 2 SO 4 2H 2 O -> 2 CuSO 4 2Cu(OH)2 Fe 2 O 3 12S°) The sulphur and the hematite (Fe2O3) solids do not leach or react in the subsequent stages of the CESL Process and are disposed of in their current forms as tails.

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  • Copper Production How Is Copper Made ThoughtCo

    Sep 26 2019 · During this reaction copper ions are exchanged for hydrogen ions allowing the acid solution to be recovered and re-used in the leaching process. The copper-rich aqueous solution is then transferred to an electrolytic tank where the electro-winning part of the process occurs.

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  • (PDF) Applications of NSC Pressure Leaching

    On an industrial scale the Sunshine mine in Idaho operated a nitric-sulfuric acid based pressure leaching (NSC) process on Cu-Ag concentrates which transformed galena into lead sulfate (Anderson

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  • USB2Leaching process for copper concentrates

    A method of recovering copper from chalcopyrite concentrate by chemical leaching using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with silver ions. Particulate pyrite is exposed to a solution containing silver ions to form silver-treated pyrite.

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  • Copper Leaching Method

    Table of ContentsBringing Copper Metal into SolutionRecovering Copper Metal from Leach LiquorsCopper Leaching EquipmentCopper Leaching CostsCopper Leaching Practices The advance made in recent times in this branch of metallurgy is indicated by the attention the subject is receiving from important American Copper producing companies. Reference to the files of publications devoted to

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  • HYDROCOPPERA NEW METHOD FOR TREATING COPPER

    leach the majority of the copper. The third leaching stage is also oxidative and will leach the remaining 25 of the copper in concentrate. Copper yield in leaching has been at least 98 for every concentrate tested. If gold is present in the concentrate it starts to leach after most of the copper in concentrate has been leached.

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  • USB2Leaching process for copper concentrates

    A method of leaching copper from copper sulphide-containing concentrates such as chalcopyrite includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface the process being carried out under conditions whereby the pyrite is not materially oxidized for example by maintaining the operating solution potential at a suitable level.

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  • USB2Leaching process for copper concentrates

    A method of recovering copper from chalcopyrite concentrate by chemical leaching using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with silver ions. Particulate pyrite is exposed to a solution containing silver ions to form silver-treated pyrite.

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  • The selective leaching of copper from a gold–copper

    Copper mineral in the concentrate before and after leaching in glycine solutions (leaching conditions two-stages 0.3 M glycine 1 peroxide RT pH 11 48 h). Table 4 The observed dissolution of copper minerals in 0.3 M glycine solution at room temperature 1 H 2O 2 pH11.

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  • Hydromet GroupHydrometallurgy at the University of

    UBC/Cominco copper chloride leach. This process was invented by Dr. Ernie Peters and COMINCO Ltd. (now TECK) to extract copper and iron from copper sulphide concentrates in an acidic chloride solution. It is one of the first examples of chloride hydrometallurgy. (Canadian Patent 938 793).

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  • PRESSURE LEACHINGRPMGlobal

    concentrates. Copper concentrate leaching has been applied as long ago as 1964 at Manduel GOK in the USSR and the Sunshine Mine process plant at Kellogg Idaho (1980) but copper concentrate leaching was advanced to larger scales with the commissioning of the Bagdad Arizona concentrate leach plant (2003) and then the Morenci Arizona

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  • USB2Leaching process for copper concentrates

    A method of leaching copper from copper sulphide-containing concentrates such as chalcopyrite includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface the process being carried out under conditions whereby the pyrite is not materially oxidized for example by maintaining the operating solution potential at a suitable level.

    Chat Online
  • USB2Leaching process for copper concentrates

    A method of recovering copper from chalcopyrite concentrate by chemical leaching using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with silver ions. Particulate pyrite is exposed to a solution containing silver ions to form silver-treated pyrite.

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  • Copper Chloride Leaching ProcessMetso Outotec

    The Copper Chloride Leaching Process consists of the following main steps Concentrate repulp Atmospheric chloride leaching Leaching residue thickening filtration wash and stabilization Copper solvent extraction (conversion from chloride to sulfate) Silver recovery from raffinate Copper

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  • Pressure Leaching of Copper Concentrates

    20 October 25th 2004 Phelps Dodge Concentrate Leaching Milestones 2Q 1998 Sulfate-based concentrate leaching development started Batch testwork at Hazen Research Dawson and Phelps Dodge Process Technology Center Continuous Pilot Plant Testing 3Q 2001 Technology Development Agreement executed with Placer Dome

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  • Leaching of Copper SulphidesSAIMM

    POX in a copper heap leach circuit. Figure 2. Simplified ferric leaching flowsheet. Figure 3. Copper chloride leach process. Leaching Chemistry As outlined earlier the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the

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  • PRESSURE LEACHINGRPMGlobal

    concentrates. Copper concentrate leaching has been applied as long ago as 1964 at Manduel GOK in the USSR and the Sunshine Mine process plant at Kellogg Idaho (1980) but copper concentrate leaching was advanced to larger scales with the commissioning of the Bagdad Arizona concentrate leach plant (2003) and then the Morenci Arizona

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  • Influence of Ferric and Ferrous Iron on Chemical and

    terial leaching of Sarcheshmeh copper concentrate in the presence and absence of mixed cultures of moderately thermophile microorganisms. The monitoring of the men- tioned cations during the leaching processes is helpful to understand their behaviour during chemical and bacterial leaching processes. 2. Materials and Methods . 2.1. Minerals

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  • Selective leaching of penalty elements from copper

    Nov 01 2016 · Although there are no known cases in industry where sulphuric acid leaching with aluminium sulphate has been used for the treatment of copper concentrates the process is considered suitable for the selective extraction of F from copper concentrates according to international patent WO 95/01460 (Jomoto and Hughes 1995).

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  • HYDROCOPPERA NEW METHOD FOR TREATING COPPER

    leach the majority of the copper. The third leaching stage is also oxidative and will leach the remaining 25 of the copper in concentrate. Copper yield in leaching has been at least 98 for every concentrate tested. If gold is present in the concentrate it starts to leach after most of the copper in concentrate has been leached.

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  • A Novel Process for the Treatment of Copper Concentrates

    GALVANOXTM –A Novel Process for Copper Concentrates GALVANOX takes advantage of the galvanic effect between chalcopyrite and pyrite. Chalcopyrite is a semiconductor and therefore corrodes electrochemically in oxidizing solutions. In ferric sulphate media the overall leaching reaction is as follows CuFeS 2 2 Fe 2 (SO 4) 3 → CuSO 4 5 FeSO

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  • DEVELOPMENT OF A GLYCINE-CYANIDE LEACH PROCESS

    circuit where pyrite is depressed and copper is concentrated to produce a copper concentrate for sale to smelters. Pyrite is then re-activated and concentrated to produce a pyrite concentrate that is then re-ground and fed to a cyanidation leaching process. Products include gold doré and copper concentrate.

    Chat Online
  • Copper Production How Is Copper Made ThoughtCo

    Sep 26 2019 · During this reaction copper ions are exchanged for hydrogen ions allowing the acid solution to be recovered and re-used in the leaching process. The copper-rich aqueous solution is then transferred to an electrolytic tank where the electro-winning part of the process occurs.

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  • Outotec copper concentrate pressure leaching process

    Outotec copper concentrate pressure leaching process The Outotec copper concentrate pressure leaching process. Outotec s process solutions for the hydrometallurgical processing of copper sulfides cover everything from lab-scale pilot testing all the way to the implementation of a full-scale hydrometallurgical plant.

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  • Method for leaching copper concentrateOutokumpu

    Dec 11 2001 · 1. A method for leaching sulfidic iron-bearing copper concentrate in a chloride milieu to obtain an essentially iron-free alkali chloride-copper chloride solution and recovering iron and elemental sulfur as a solid matter precipitate the method comprising leaching continuously and countercurrently in several stages wherein each stage has at least one reactor with bivalent copper and

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  • Hydrometallurgical considerations in processing arsenic

    Figure 1 CESL Copper Process Flowsheet Concentrate is first reground prior to leaching at 150°C and 14 bar pressure. Retention time in the leach vessel is in the range of 60 to 90 minutes to promote complete oxidation of the copper sulphide minerals and to maximize the extent of arsenic precipitation within the vessel.

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