منزل sulfuric acid copper leaching - search results

sulfuric acid copper leaching - search results

  • Copper extraction - Wikipedia

    Sulfide ores. Secondary sulfides – those formed by supergene secondary enrichment – are resistant to sulfuric leaching.These ores are a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals, dominantly chalcocite but other minerals such as digenite can be important in some deposits.. Supergene ores rich in sulfides may be concentrated using ...


  • Better prospects for the price of copper push up the value ...

    Better prospects for the price of copper push up the value of sulfuric acid. In the long term, a surplus scenario is expected in the country. It is one of the main inputs of the mining industry, and in some cases it can represent up to 30% of the processing costs. Among the inputs used by mining operations to extract copper through the leaching ...


  • Selective reductive leaching of cobalt and lithium from ...

    In this article, the sulfuric acid leaching of industrially produced waste LIBs scraps with 23.6% cobalt (Co), 3.6% lithium (Li) and 6.2% copper (Cu) was investigated. The industrially produced LIBs scraps were shown to provide higher Li and Co leaching extractions compared to dissolution of corresponding amount of pure LiCoO 2. In addition ...


  • Process for leaching copper from copper sulfide using ...

    1. An acid leaching solution is applied to the top of a column apparatus (cylinder) 1 filled with copper sulfide 2. The acid leaching solution flows toward the lower portion of the column apparatus 1 while progressively leaching from the copper sulfide 2, and is received by a receiver 3.


  • Sulphuric acid leaching of zinc and copper from Nigerian ...

    Sulphuric acid leaching of zinc and copper from Nigerian Complex Sulphide Ore in the presence of hydrogen peroxide by P.A. Olubambi*†, J.O. Borode†, and S. Ndlovu* Synopsis The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in …


  • A comprehensive study of the leaching behavior and ...

    A comprehensive study of the leaching behavior and dissolution kinetics of copper oxide ore in sulfuric acid lixiviant B. Bayati, A. Azizi, and M. Karamoozian Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran. Received 20 September 2017; received in revised form 20 December 2017; accepted 27 January 2018


  • LEACHING OF METALS FROM WASTE PRINTED CIRCUIT …

    Copper leaching was increased for sulfuric acid concentrations up to 1.2 mol/L and hydrogen peroxide concentrations of 10.0 vol% for a pulp density of 100 g/L at 50°C over 4 h, whereas for the same concentrations of sulfuric acid and hydrogen peroxide


  • per sulfate leaching of copper from pcb waste

    The copper in metal powders of waste PCBs is recovered using the process of sulfuric acid leaching, in the presence of Cu 2+ and the air oxidant, through Cl − ionic forming CuCl 2− complex intermediate product.


  • Primary Copper Ore Leaching by Leaching Solution Adjusted ...

    Copper ore is classified into three groups; primary copper sulfide, copper oxide and secondary copper sulfide. Leaching copper from primary copper sulfide, such as chalcopyrite, with sulfuric acid takes longer time than from copper oxide and secondary copper sulfide. As such, an oxidant is required to extract copper from chalcopyrite. In this study, column leaching tests were carried out using ...


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

    The leaching of copper tailings in the sulfuric acid solution may involve the reactions shown in eqn (5)–(10). 11,24,25 The Gibbs free energy (Δ G °) is calculated to be −101.81 kJ mol −1 for Fe 3 O 4, −203.58 kJ mol −1 for Fe 2 SiO 4, −265.06 kJ mol −1 for CaO, −114.65 kJ mol −1 for CuO, −131.22 kJ mol −1 for ZnO, and ...


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

    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 sulfuric acid solution using ...


  • A review of chloride assisted copper sulfide leaching by ...

    Please cite this article as: Senanayake, G., A review of chloride assisted copper sulfide leaching by oxygenated sulfuric acid and mechanistic considerations, Hydrometallurgy (2009), doi: 10.1016/j.hydromet.2009.02.010 This is a PDF file of an unedited manuscript that has been accepted for …



  • 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.



  • How Hydrometallurgy and the SX/EW Process Made Copper the ...

    Beginning in the mid 1980s a new technology, commonly known as the leach-solvent extraction-electrowinning process or, SX/EW Process, was widely adopted. This new copper technology utilizes smelter acid to produce copper from oxidized ores and mine wastes. Today, worldwide, approximately 20% of all copper produced is produced by this is process.


  • Leaching of Copper from Cuprous Oxide in Aerated Sulfuric …

    The leaching ef˜ciency of copper was reported to be about 50% in the case of leaching in sulfuric acid solution without other oxidants7–9). Although Sullivan and Oldright7 ) and Majima et al.9 observed that the intro-duction of oxygen or air enhanced the leaching ef˜ciency of copper by employing single experimental set without further


  • Acid Leaching - Copper Ore Treatment Method

    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 sulfate solvent. This flowsheet would also be suitable for a larger tonnage by proper sizing of the various units of equipment. The flowsheet contemplates a six to seven day leach-wash cycle with ...


  • 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 ammonia solution was used to stabilize Cu by forming an amine complex in solution, while other ...


  • Copper Mining and Processing: Processing Copper Ores ...

    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 "pregnant" leach solution of sulfuric acid and copper sulfate is collected in a small pool. The copper compound can now be seen at ...


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

    Sulfuric acid leaching of copper rich slag with the optimized parameters can provide a copper rich process solution with iron as the main impurity metal. The solution can provide an attractive feed for integration into the industrial primary copper production with acceptable low Ni, As and Pb levels (43.6 g/L Cu, 9.4 g/L Fe, 0.3 g/L Ni, 0.1 g/L ...


  • Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under ...

    In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to evaluate three variables over a 4-h testing period: sulfuric acid concentration (0.01–1.0 mol/L H2SO4), sodium chloride (10–60 g/L NaCl), and temperature (20–70 °C).


  • Question Video: Reaction of Sulfuric Acid with Cupric ...

    Question Video: Reaction of Sulfuric Acid with Cupric Oxide. Ores containing cupric oxide (CuO) are commonly reacted with sulfuric acid to produce a copper-containing material that is more easily processed. This process is known as sulfuric acid leaching. a) Write a balanced chemical equation for the reaction of cupric oxide with sulfuric acid.


  • LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY …

    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.


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

    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


  • -Leaching and Its Kinetics of Copper …

    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, initial acidity, liquid-solid ratio, stirring rate, leaching temperature and leaching time on copper leaching in sulfuric acid ...


  • A statistical approach to the experimental design of the ...

    Sulfuric acid leaching did not provide more than 76% copper extraction because the only slightly native copper that was leached (23%). For this reason, the sulfuric acid leach residue still had 0.30% native copper and 0.52% total copper.


  • Simultaneous extraction of nickel, copper, and cobalt from ...

    When this ore is treated by traditional pyrometallurgical smelting process, that is, the primary ore (flotation) → nickel concentrate (high temperature smelting) → low-grade nickel matte (converter smelting) → high-grade nickel matte (grinding and flotation separation or sulfuric acid leaching or high-pressure ammonia leaching process ...


  • Agitated Copper Leaching & Cementation Process

    The Copper Leaching and Copper Cementation Process. The method of dissolution by sulfuric acid and ferric sulfate with chemical precipitation by means of scrap or sponge iron appears to offer the best potential for wide application and low costs.



  • Leaching of Metals from Hydrometallurgical Residue by ...

    leaching in (0.25, 0.5, 1 and 2 (mol.L-1)) sulfuric acid solutions. The subsequent leaching was performed in the optimized acid concentrations at temperatures of (25, 45, 65 and 85 °C) for (0.5, 1, 1.5 and 2 hour) at each temperature. A variable speed stirrer operated at a speed of 100rpm was maintained during in all leaching experiments at 1MPa.


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

    Metals 2020, 10, 293 3 of 14 Chemical Co. Ltd, Tokyo, Japan) and sulfuric acid (H2SO4, 95%, Junsei Chemical Co. Ltd, Tokyo, Japan) were used as lixiviants to leach the copper sludge. Leaching experiments were perfor med in a 1000-mL glass beaker at a fixed stirring speed of 250