acid leaching of copper

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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Sulfuric acid leaching for capturing value from copper ...

2019-4-1  In this research, a hydrometallurgical method for recovery of copper from copper rich converter slag is investigated. The main copper containing phases of the slag are cuprite (Cu 2 O), delafossite (CuFeO 2) and metallic copper (Cu).The study investigates the effect of particle size, temperature, acid concentration, agitation and leaching time under oxidizing conditions.

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(PDF) Leaching of copper oxide with different acid solutions

2021-12-28  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

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Hydrochloric Acid Leaching Behaviors of Copper and ...

Copper (Cu) has been recovered from speiss generated from top submerged lance furnace process, but it was reported that the leaching efficiency of Cu in sulfuric acid solution decreased with increasing antimony (Sb) content in the speiss. Scanning electron microscopy (SEM)–energy-dispersive X-ray spectroscopy (EDS) results indicate that Sb exists as CuSb

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A study on the sulphuric acid leaching of copper converter ...

2004-3-1  Similarly, it has been shown that sodium dichromate could be used as an oxidant to remove some copper sulphide minerals from molybdenite concentrates (Ruiz and Padilla, 1998). The aim of this study is to investigate sulphuric acid leaching of copper converter slag in the presence of dichromate which is an efficient oxidant.

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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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A STUDY OF LEACHING OF COPPER OXIDE ORE BY

2021-12-24  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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Optimization of sulfuric acid leaching of roasted ...

2020-8-26  Chalcopyrite (CuFeS2) is commonly used ore in production of copper, but leaching of this ore is very slow and inefficient due to “passivation” during

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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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Nitric Acid Leaching of Copper-Zinc Sulfide Middlings ...

2016-5-16  Nitride leaching of copper-zinc sulfide middlings that are difficult to concentrate is studied with the aim of clarifying and supplementing results obtained previously. It is shown that organization of two-stage countercurrent leaching makes it possible to reduce the concentration of nitrate ions within leaching solution, to increase the degree of nitric acid regeneration, and to

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Selective Copper Recovery by Acid Leaching from

2020-2-23  acid leaching has been effectively employed as an alternative process to recover copper from PCBs waste sludge, following the hydrometallurgical route. A wide range of acids was investigated to extract copper; for example, inorganic acids like HCl, HClO4, HNO3, and H2SO4, organic acids like

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Acid leaching of copper ore heap with fluoroaliphatic ...

Such aqueous acid leaching typically utilizes an aqueous solution of dilute sulfuric acid ("leachant"), which leaches, or dissolves, the copper from the ore. The aqueous acid leachant is typically sprayed on top of the heap or dump and allowed to percolate, or trickle, down by gravity between the ore pieces.

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Extraction of Tin and Copper by Acid Leaching of PCBs

2013-2-2  1.55 grams of copper was reported in 500 grams of PCB plates on titration. This copper is primarily from the solder and the legs of components as the copper in middle layer remains unreacted in such low acid concentrations. In cementation 1.14 grams of copper was recovered implying 73.5 % efficiency . Figure 5.

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Effect of acid-leaching on carbon-supported copper ...

2015-5-28  Effect of acid-leaching on carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt (CuTSPc/C) for oxygen reduction reaction in alkaline electrolyte: active site studies† Qing Zhang , a Taishan Zhu , b Xin Qing , b Jinli Qiao * ab and Shuhui Sun * c

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Extraction of Tin and Copper by Acid Leaching of PCBs

2013-2-2  Nitric acid was found suitable and used for the extraction of copper and tin at room temperature. In the leached solution suspended tin and copper nitrates were obtained. X-ray diffraction (XRD) and Energy dispersive X-ray analysis

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Extraction of Tin and Copper by Acid Leaching of PCBs ...

Nitric acid was found suitable and used for the extract ion of copper and tin at roo m temperature. In the leached solution suspended tin and copper nitrates were obtained. X-ray d iffraction (XRD) and Energy dispersive X-ray analysis (EDA X) was done to characterize the precipitate obtained. Copper in leached solution was recovered by cementation.

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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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LEACHING OF COPPER CONCENTRATES

2020-4-2  copper oxides have been in common use for some time. Prior to the development of the Sherritt-Gordon process for nickel and cobalt in which copper is recovered as high grade copper sulfide, copper sulfides were economically recovered in a hydrometallurgical process only during the leaching of waste dumps. . Need for Hydrometallurgical Processes

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Agitated Copper Leaching Cementation Process

2016-4-14  Copper Agitated Leaching and cementation process of copper problem: The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for

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Dissolution of copper from smelting slag by leaching in ...

2017-10-29  Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H 2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H 2 O 2

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Selective Copper Recovery by Acid Leaching from

2020-2-23  acid leaching has been effectively employed as an alternative process to recover copper from PCBs waste sludge, following the hydrometallurgical route. A wide range of acids was investigated to extract copper; for example, inorganic acids like HCl, HClO4, HNO3, and H2SO4, organic acids like

More

Acid leaching of copper ore heap with fluoroaliphatic ...

Such aqueous acid leaching typically utilizes an aqueous solution of dilute sulfuric acid ("leachant"), which leaches, or dissolves, the copper from the ore. The aqueous acid leachant is typically sprayed on top of the heap or dump and allowed to percolate, or trickle, down by gravity between the ore pieces.

More

Effect of acid-leaching on carbon-supported copper ...

2015-5-28  Effect of acid-leaching on carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt (CuTSPc/C) for oxygen reduction reaction in alkaline electrolyte: active site studies† Qing Zhang , a Taishan Zhu , b Xin Qing , b Jinli Qiao * ab and Shuhui Sun * c

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Acid and Oxidizing Leaching of Copper Refinery Anodic ...

2018-6-9  Acid and Oxidizing Leaching of Copper Refinery Anodic Slimes in Hexafluorosilicic Acid and Nitric Acid Media E. A. Jdid CENTRE DE RECHERCHE SUR LA VALORISATION DES MINERAIS, LABORATOIRE ENVIRONNEMENT ET MINERALURGIE URA CNRS 235 ENSG-INPL , RUE DOYEN MARCEL ROUBAULT; B.P. 40-F 54 501 VANDOEUVRE, CEDEX,

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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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Extraction of Tin and Copper by Acid Leaching of PCBs

2013-2-2  Nitric acid was found suitable and used for the extraction of copper and tin at room temperature. In the leached solution suspended tin and copper nitrates were obtained. X-ray diffraction (XRD) and Energy dispersive X-ray analysis

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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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Acetic acid mediated leaching of metals from lead-free ...

2017-10-3  Biswas and Mulaba-Bafubiandi used citric, oxalic, and gluconic acids for the leaching of copper (Cu) and cobalt (Co) from oxidized ore. They achieved maximum recovery of Cu and Co at 80 °C using 150 mM of citric acid. Their findings also suggest that the recovery of Cu and Co from the oxidized ore was highly dependent on the amenability of the ...

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Optimization of HNO 3 leaching of copper from old AMD ...

The present study investigates the optimization of HNO 3 leaching of Cu from old AMD Athlon processors under the effect of nitric acid concentration (%), temperature (°C) and ultrasonic power (W). The optimization study is carried out using response surface methodology with central composite rotatable design (CCRD).

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Dissolution of copper from smelting slag by leaching in ...

2017-10-29  Leaching of copper smelting slag in chloride media was studied. The lixiviants used were aqueous solutions of hydrochloric acid (0.5-2.0 M HCl) as well as hydrogen peroxide and hydrochloric acid (0.5-3.0 M H 2O2, 1.0 M HCl). The maximum final copper extraction from the slag of 73% was attained with 3 M H 2 O 2

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