leaching copper oxidative

  • Electrochemistry of the oxidative leaching of copper from

    Electrochemistry of the oxidative leaching of copper from chalcopyrite Author links open overlay panel AJ Parker a b RL Paul a b GP Power a b Show more Share Catalysis of FeCl 3 leaching by CuCl 2 in solution, or by Ag 2 S or FeS 2 in the solid CuFeS 2, is explained by the electrochemical model Ways of enhancing the rates ofThe objective of this study is to compare the reaction kinetics of copper leaching from chalcopyrite in acidic ferric sulfate media with (UAL) and without (nonUAL) ultrasound assistance Four leaching parameters were evaluated and optimized The parameter with the strongest effect was temperature, followed by ultrasonic power, the solidtoliquid ratio (S/L), and acid concentrationEffect of Ultrasound on the Oxidative Copper LeachingThe pressure oxidative leaching of leadcontaining copper matte is studied systematically The effects of leaching time, oxygen partial pressure, leaching temperature, agitation speed, acid addition and initial Cu 2+ concentration on the extraction of copper and iron are investigated The effect of initial Cu 2+ concentration is insignificant compared to the otherPressure oxidative leaching of leadcontaining copper

  • Effect of Ultrasound on the Oxidative Copper Leaching

    The objective of this study is to compare the reaction kinetics of copper leaching from chalcopyrite in acidic ferric sulfate media with (UAL) and without (nonUAL) ultrasound assistance Four leaching parameters were evaluated and optimized The parameter with the strongest effect was temperature, followed by ultrasonic power, the solidtoliquid ratio (S/L), and acid concentrationMarkovi ć at al Investigation of copper(I) sulphide leaching in oxidative 255 first leaching stage in the Cu 2 S–NaCl–HCl–O 2 –H 2 O system can beINVESTIGATION OF COPPER(I) SULPHIDE LEACHING INIn this study, chalcopyrite concentrate produced in Sarcheshmeh copper plant was subjected to oxidative leaching investigation by cupric ion to determine the effect of several parameters on the copper and iron dissolution, including temperature of leaching, time of holding and cupric concentration as oxidant agent in a range of 38–97 °C, 15–85 h and 02–08 M,Oxidative Leaching of Chalcopyrite by Cupric Ion in

  • Oxidative leaching of refractory sulphidic gold tailings

    Application of 1alkyl3methylimidazolium ionic liquids in the oxidative leaching of sulphidic copper, gold and silver ores Hydrometallurgy , 88 ( 1–4 ) ( 2007 ) , pp 109 120 , 101016/jhydromet200703815Leaching copper and zinc from lead copper matte by pressure oxidative leaching Abstract : In order to recover the copper, lead and zinc resources in lead copper matte and soot effectively, the feasibility of recovering copper and zinc was discussed by flotation test and sulfuric acid pressure leaching method中国矿业杂志Abstract An intensified oxidative acid leaching of copper–cadmiumbearing slag featuring using highefficient oxygen carrier, such as activated carbon, was investigated to achieve high leaching rate of valuable metals The effects of leaching variables, including agitation rate, sulfuric acid concentration, temperature, slag particle size, activated carbon and cupricExtraction of copper, zinc and cadmium from

  • The role of non oxidative processes in the leaching of

    The chemical leaching of chalcopyrite was carried out to investigate the effects of temperature, ferrous ions and pH values on the leaching rate The copper extraction ofMarkovi ć at al Investigation of copper(I) sulphide leaching in oxidative 255 first leaching stage in the Cu 2 S–NaCl–HCl–O 2 –H 2 O system can be presented asINVESTIGATION OF COPPER(I) SULPHIDE LEACHING INleaching at 90°C and 11 g/L Fe3+ as compared to 65% under nonoxidative conditions A copper extraction of 99% was achieved in the first 45 minutes using twostage nonoxidative leaching, and copper was recovered from solution by cementation Three processes took place simultaneously throughout the leaching process, namely: dissolutionAtmospheric oxidative and nonoxidative leaching

  • INVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN

    Marković at al Investigation of copper(I) sulphide leaching in oxidative 257 resulting in a more difficult penetration of the reaction area into the centre of the Cu2S grain The maximum leaching degree was 90% Cu, after 240 min at 80oC The Xray diffraction analysis of obtained solid residue, was carried out (Fig 3)In this study, chalcopyrite concentrate produced in Sarcheshmeh copper plant was subjected to oxidative leaching investigation by cupric ion to determine the effect of several parameters on the copper and iron dissolution, including temperature of leaching, time of holding and cupric concentration as oxidant agent in a range of 38–97 °C, 15–85 h and 02–08 M, respectively TheOxidative Leaching of Chalcopyrite by Cupric SpringerIn this research, copper smelting slag was processed under a pressurized oxygen atmosphere and low acidity conditions to achieve the selective extraction of copper and zinc and to let the iron and silicon in the slag be transformed and reconstructed into hematite and amorphous silica, respectively The composition and the structure of the raw materials and the leaching residue wereA Study on the Selective Leaching of Valuable Metals and

  • RECOVERY OF COPPER FROM COPPER SLAG AND

    Recovery of copper from copper slag and copper slag flotation tailings 75by oxidative leaching Table 1 Chemical compositions of the copper smelter slag and the slag flotation tailings Constituent Content (wt%) Copper Slag Slag Flotation Tailings Cu – total 097 059 Cu – oxides 015 006 Cu – sulphides 082 053 SiO 2 3375 3462 Al 2 O Oxidative Leach (ROL) A gamechanger for gold and copper VIDEO Laurie Barlow, ’s Vice President of Minerals, Australia explains how the groundbreaking Oxidative Leach (ROL) will change gold and copper extraction Oxidative Leach (ROL) A gamechanger Nonoxidative leaching of black shale copper ore from Lubin mine 327 three lithological layers of Polish copper ores This fraction, as a hardly upgradable, is concentrating during the flotation in the middlings tailings of 1st cleaning at Lubin Concentrator The comparison of market values of copper and accompanying metalsNONOXIDATIVE LEACHING OF BLACK SHALE COPPER

  • The role of nonoxidative processes Murdoch University

    Nicol, M ORCID: 000000028757161X and Lazaro, I (2003) The role of nonoxidative processes in the leaching of chalcopyrite In: 5th CopperCobre International Conference (2003), 30 Nov Research Advances in Applications of Oxidants in Oxidation Leaching of Chalcopyrite Guocai TIAN 1,2*, Junxian HU 1, Futing ZI 3 1 State Key Lab of Complex Nonferrous Metal Resource Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan , China; 2 Faculty of Metallurgical and Energy Engineering, KunmingResearch Advances in Applications of Oxidants inMarkovi ć at al Investigation of copper(I) sulphide leaching in oxidative 255 first leaching stage in the Cu 2 S–NaCl–HCl–O 2 –H 2 O system can be presented asINVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN

  • INVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN

    Marković at al Investigation of copper(I) sulphide leaching in oxidative 257 resulting in a more difficult penetration of the reaction area into the centre of the Cu2S grain The maximum leaching degree was 90% Cu, after 240 min at 80oC The Xray diffraction analysis of obtained solid residue, was carried out (Fig 3)The objective of this study is to compare the reaction kinetics of copper leaching from chalcopyrite in acidic ferric sulfate media with (UAL) and without (nonUAL) ultrasound assistance Four leaching parameters were evaluated and optimized The parameter with the strongest effect was temperature, followed by ultrasonic power, the solidtoliquid ratio (S/L), and acid concentrationEffect of Ultrasound on the Oxidative Copper Leachingleaching at 90°C and 11 g/L Fe3+ as compared to 65% under nonoxidative conditions A copper extraction of 99% was achieved in the first 45 minutes using twostage nonoxidative leaching, and copper was recovered from solution by cementation Three processes took place simultaneously throughout the leaching process, namely: dissolutionAtmospheric oxidative and nonoxidative leaching of Ni

  • Recovery of copper from copper slag and copper slag

    A combination of hydrometallurgical processes of highpressure oxidative leaching (HPOL), solvent extraction (SX), and electrowinning (EW) were utilized to recover copper from mine tailings which claims copperleaching technology leap said its new Oxidative Leach technology can increase copper output by 3% from lowgrade concentrate, translating to an extra US$40 million in revenues per year for an average claims copperleaching technology leap MiningNicol, M ORCID: 000000028757161X and Lazaro, I (2003) The role of nonoxidative processes in the leaching of chalcopyrite In: 5th CopperCobre International Conference (2003), 30 Nov The role of nonoxidative processes in the leaching of

  • Oxidative Leach (ROL) A gamechanger

    Oxidative Leach (ROL) A gamechanger for gold and copper VIDEO Laurie Barlow, ’s Vice President of Minerals, Australia explains how the groundbreaking Oxidative Leach (ROL) will change gold and copper extractionoxidative leaching with ozone is relevant in copperiron sulphide and gold and silver containing sulphides Moreover , oxidative leaching of coalcontaining iron sulphide might also have a positive impact on coal cleaning prior to its use in energy related applications The hydrometallurgy of different sulphide minerals will be treatedOxidative Hydrometallurgy of Sulphide MineralsLeaching of Copper Sulphides Marc Nicolle,1 Marko Lampi,2 Kari Valkama, 2 and Janne Karonen 1 Outotec (RSA) (Pty) Ltd, Johannesburg, South Africa 2 Outotec (Finland) Oy, Pori, Finland Corresponding author: [email protected] In the ten years from 2003 to 2013 global mine production of copper has increased byLeaching of Copper Sulphides SAIMM

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