sulfuric acid copper leaching

  • Improvement of Copper Metal Leaching in Sulfuric Acid ...

    2020-5-28 · A new concept for copper (Cu) metal leaching by the simultaneous use of cupric ions (Cu2+) and oxygen (O2) was proposed to improve Cu metal leaching in sulfuric acid. According to this concept, Cu2+ oxidizes Cu metal into cuprous ion (Cu+), and O2 oxidizes Cu+ into Cu2+. The improvement in Cu leaching efficiency from Cu metal was investigated experimentally in the

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  • Sulfuric acid leaching for capturing value from copper ...

    2019-4-1 · The dominating copper phases in the slag are Cu, Cu2 O and CuFeO 2 (XRD and SEM-EDS). Leaching copper from these phases using sulfuric acid has a fast dissolution kinetics. Smaller particle size, higher temperature (up to 40 °C) and increasing mixing power (up to 0.26 kW/m 3) enhance the leaching kinetics.

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  • Sulfuric acid injection in copper heap leaching | LEWA

    The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore. The resulting solution of sulfuric acid and copper sulfate is collected in a small pool. Copper concentration is around 65%. Next step is solvent extraction.

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  • Leaching of iron from copper tailings by sulfuric acid ...

    In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1 , stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120 min), 66.45% of Fe, along with 65.32% of Zn and 59.95% of Cu ...

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  • A STUDY OF LEACHING OF COPPER OXIDE ORE BY

    2022-1-11 · A required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such

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  • Intensification of Sulfuric Acid Leaching of Copper from ...

    2020-3-29 · The sulfuric acid concentration within the range 40–100 g/L does not significantly affect the ozone-assisted dissolution of copper sulfides: at t = 20°C, an S : L ratio of 1 : 5, an ozone–oxygen mixture rate of 2 mL/s, [O 3] = 180 mg/L, and τ = 3 h, the extraction of copper changes within the range 76.3–77.7%.

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  • Leaching of iron from copper tailings by sulfuric acid ...

    Leaching of iron from copper tailings by sulfuric acid: behavior, kinetics and mechanism†. Lei Tao a, Langlang Wang a, Kanghuai Yang a, Xueqian Wang * a, Lu Chen * b and Ping Ning a a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China. E-mail: [email protected]; Tel: +86 13888183303 b Faculty

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  • Optimization of sulfuric acid leaching of roasted ...

    2020-8-26 · In many studies in the literature, sulfuric acid and hydrochloric acid are the most preferred for leaching in acidic environments [32,33,34,35,36]. It is

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  • Acid Leaching - Copper Ore Treatment Method

    2017-5-23 · The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric

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  • Acid Leachability Copper Species - 911 Metallurgist

    2016-8-11 · strengths of sulfuric acid solutions. Sloan (1934) has evaluated a number of different analytical methods employing sulfuric acid leaching. Several of these methods or variations of these methods are routinely used for oxide or acid soluble copper determinations at commercial laboratories in the western United States.

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  • Sulfuric acid injection in copper heap leaching | LEWA

    The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore. The resulting solution of sulfuric acid and copper sulfate is collected in a small pool. Copper concentration is around 65%. Next step is solvent extraction.

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  • A STUDY OF LEACHING OF COPPER OXIDE ORE BY

    2022-1-11 · A required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such

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  • Leaching of Copper from Cuprous Oxide in Aerated

    Leaching of Copper from Cuprous Oxide in Aerated Sulfuric Acid Ilhwan Park1, Kyoungkeun Yoo1,*, Richard Diaz 3Alorro2, Min-seuk Kim3 and Soo-kyung Kim 1Department of Energy & Resources Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea 2Department of Mining Engineering and Metallurgical Engineering, Western Australian School

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  • Augmenting metal leaching from copper anode slime by ...

    2021-9-10 · Augmenting metal leaching from copper anode slime by sulfuric acid in the presence of manganese(IV) oxide and Hydrometallurgy ( IF 4.156) Pub Date : 2021-09-02, DOI: 10.1016/j.hydromet Kurniawan Kurniawan, Jae-chun Lee,

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  • LEACHING OF LOW-GRADE COPPER ORES: A CASE

    2017-6-9 · leaching methods. Agents for leaching copper can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the broadest industrial application in hydrometallurgy of copper. The basic copper carbonate minerals, which are easily leached with the solution of sulphuric acid are: azurite, malachite and chrysocolla.

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  • Removal of Copper and Enrichment of Precious Metals

    2014-12-10 · leaching pretreatment of copper anode slime in sulfuric acid medium is studied systematically. Parameters studied included: concentration of sulfuric acid, partial pressure of air, leaching temperature, leaching time and liquor to solid ratio. The experimental

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  • Selective Copper Recovery by Acid Leaching from Printed ...

    Two-stage leaching and evaporation were applied to extract and purify copper from copper-contaminated sludge: (i) in the first stage, 2.0 N sulfuric acid could leach out 95.2% Cu and other impurities (Fe, Al, and Pb); (ii) in the second stage, an

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  • 含铜硫酸渣中铜的浸出及浸出动力学分析-Leaching and Its ...

    Abstract:In order to study the kinetics of copper leaching from pyrite cinder containing 0.87% sulfuric acid after being roasted at high temperature, the chemical properties of ore were analyzed by X-ray diffraction and other methods.The effects of ore particle size ...

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  • Acid-leaching - Big Chemical Encyclopedia

    Acid-leaching Nickel and Cobalt. Often present with copper in sulfuric acid leach Hquors are nickel [7440-02-0] and cobalt [7440-48-4]. Extraction using an organophosphoric acid such as D2EHPA at a moderate (3 to 4) pH can readily take out the nickel and cobalt together, leaving the copper in the aqueous phase, but the cobalt—nickel separation is more difficult (274).

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  • Research on oxidizing leaching tellurium from copper ...

    2020-9-4 · Abstract In view of the composition of copper telluride material phase, a process for oxidizing leaching tellurium from copper telluride material in acid condition with hydrogen peroxide was proposed. The effects of the sulfuric acid excess coefficient ...

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  • sulfuric acid usage in copper leaching | Gold Refining ...

    2014-12-14 · Pacific NW. Jan 1, 2014. #10. Actually dilute the acid is stronger, concentrated sulfuric acid can passivate metals like iron or copper. concentrated sulfuric can be used in iron vessels because the iron passivates but if we added water we would dissolve the iron pot.

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  • Leaching of Copper from Cuprous Oxide in Aerated

    The leaching behavior of copper from Cu 2 O in H 2 SO 4 solution was investigated to establish the leaching process for cathode powders produced by the recycling of waste printed circuit boards. When air was not introduced in sulfuric acid solution, the dissolution of copper from Cu 2 O was inhibited by the formation of elemental copper (Cu 0).The dissociated cuprous ions (Cu

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  • Removal of Copper and Enrichment of Precious Metals

    2014-12-10 · leaching pretreatment of copper anode slime in sulfuric acid medium is studied systematically. Parameters studied included: concentration of sulfuric acid, partial pressure of air, leaching temperature, leaching time and liquor to solid ratio. The experimental

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  • LEACHING KINETICS OF COPPER FROM CHALCOPYRITE

    2013-9-7 · Sulfuric acid processing with the addition of a small amount of nitrogen species has been employed for a long time in some industrial applications. The first patented commercial process by Sunshine Precious Metals (Idaho, USA) used a sulfuric and dilute nitric acid mixture to leach silver- and copper-bearing ores (Caldon, 1978).

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  • Extraction of Tin and Copper by Acid Leaching of PCBs

    2013-2-2 · For copper in the l eached solution, sulfate bath was made by adding few drops of sulfuric acid and evaporating all the ntrc acd. It was ttrated to get the amount of copper presen . For recovery, Cementation was carried out at 60 °C till all copper was recovered.

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  • 含铜硫酸渣中铜的浸出及浸出动力学分析-Leaching and Its ...

    Abstract:In order to study the kinetics of copper leaching from pyrite cinder containing 0.87% sulfuric acid after being roasted at high temperature, the chemical properties of ore were analyzed by X-ray diffraction and other methods.The effects of ore particle size ...

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  • Selective Copper Recovery by Acid Leaching from

    2020-2-23 · Two-stage leaching and evaporation were applied to extract and purify copper from copper- contaminated sludge: (i) in the first stage, 2.0 N sulfuric acid could leach out 95.2% Cu and other impurities (Fe, Al, and Pb); (ii) in the second stage, an

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  • Leaching of Metals from Hydrometallurgical Residue by ...

    2019-8-24 · leaching of the recovery of metals Zn, Fe and Cu was studied at constant sulfuric acid concentration of 2mol.l-1, leaching time of 2h and solid-to-liquid ratio (1:10) at leaching temperatures(85 °C). Measurement of the reaction rates on the influence of particle sizes on the recovery of metals Zn, Fe and Cu dissolution in H 2 SO 4

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  • Acid leaching of oxide–sulfide copper ore prior the ...

    2015-11-26 · 453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

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  • (PDF) Leaching of copper oxide with different

    2022-1-14 · Both citric acid and HCl have shown more than 75% recovery of copper and metals like Ag, Al, Pb, Ni, and Fe in the leaching solution in 4 h and 24 h, respectively, at 28ºC. Similarly, leaching ...

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