Copper
Browse 60 curated documents about copper in The Archive — the 2RA-Edition digital library for engineering and scientific research. This collection of books, journal articles, theses, reports, and technical documents on copper spans extractive metallurgy, mining engineering, chemistry, and applied science. Every document is searchable in full text; sign in to read, download, ask AI questions about any document, or generate cited research drafts with the AI Researcher.
Recycling of WEEE Characterization of spent printed circuit 2011 Waste Man
Luciana Harue Yamane, Viviane Tavares de Moraes
This paper presents a comparison between printed circuit boards from computers and mobile phones. Since printed circuits boards are becoming more complex and smaller, the amount of materials is constantly changing. The main objective of this work was to characterize spent printed circuit boards from computers and mobile phones applying mineral processing technique to separate the metal, ceramic, a
An investigation of trends in precious metal and copper content 2017 Waste M
Rhys Gareth Charles, Peter Douglas
Precious metal (PM) and copper content of dynamic-RAM modules placed on the market during 1991–2008 has been analysed by AAS following comminution and acid digestion. Linear regression analysis of compositional data ordered according to sample chronology was used to identify historic temporal trends in module composition resulting from changes in manufacturing practices, and to project future tren
The Waelz Slag from Electric Arc Furnace Dust Processing: Characterization and Magnetic Separation Studies
Pavel Grudinsky, Anfisa Yurtaeva
The Waelz slag generated during electric arc furnace dust processing is an iron-rich product with significant amounts of iron, zinc and copper. About 600–800 kg of the Waelz slag is generated per ton of the dust processed. The Waelz slag samples from two different plants were thoroughly characterized using inductively coupled plasma optical emission spectroscopy (ICP-AES), X-ray diffraction analys
CONTRIBUTION A L’OPTIMISATION DES PARAMETRES DE LA LIXIVIATION SIMULTANNEE DE MINERAIS OXYDES ET RECUPERATION DU CUIVRE ET DU COBALT TOUT EN REDUISANT LA CONSOMMATION D’ACIDE PAR LA
YAV MPEZ Elyse, Jacob MASIALA
La présente étude porte sur l’optimisation des paramètres de la lixiviation acide réductrice de minerais oxydés cupro-cobaltifères riches en carbonates, en vue d’améliorer la mise en solution du cuivre et du cobalt tout en maîtrisant la consommation d’acide sulfurique. Les minerais oxydés étudiés, prélevés sur les remblais de minerais broyés du KOV et de Mashamba au niveau de KTC, présentent des t
ÉTUDE DE LA FLOTTATION DU MÉLANGE À PART ÉGALE DES MINERAIS SULFURES PAUVRES DE MINES DE KANSOKO ET KAMOA ONE (CAS DU CONCENTRATEUR DE KAMOA ONE)
ILUNGA NSENGA Gloire, NGOY Jacob Masiala
La présente étude porte sur la flottabilité des minerais sulfurés pauvres provenant des stockpiles de Kansoko et de Kamoa One, au sein du concentrateur de Kamoa Copper. Elle s’inscrit dans le contexte de la valorisation des minerais à faible teneur en cuivre, dont le traitement constitue un enjeu à la fois économique, métallurgique et environnemental. L’objectif principal était de déterminer les c
ETUDE DES IMPACTS DES ELEMENTS TOXIQUES ISSUES DES OPERATIONS MINIERES SUR L’ENVIRONNEMENT. Cas de la mine de Kamfundwa
KUTEMBA SARAH Ange, NGOY BIYUKALEZA BILEZ
La mine à ciel ouvert de Kamfundwa, exploitée par la Gécamines dans la ceinture cuprifère katangaise, est analysée dans le contexte d'une demande internationale croissante en cuivre et en cobalt. L'objectif de cette étude est d'évaluer comment les opérations d'exploitation minière à Kamfundwa libèrent des éléments toxiques et leurs impacts sur l'air, l'eau, le sol et la végétation environnants. La
ILUNGA KAMWANYA MEMEOIRE
Kandji, R.
La présente étude porte sur la valorisation des rejets des Usines à Cuivre de Kolwezi par séparation magnétique comme prétraitement avant la lixiviation. L'objectif principal était d'évaluer l'intérêt de la séparation magnétique pour mieux répartir les métaux contenus dans les rejets, en particulier le cuivre et le zinc, afin d'améliorer leur valorisation tout en réduisant les coûts de traitement.
ALAIN NGOY Balagiva TFC
NGOY TSHIMWANG Alain, PO ZEKA MUJINGA
Le présent travail a porté sur l’optimisation de la dose du Lupromine 3000 et de l’acide phosphorique pour la flottation inverse des minéraux calciques et sur l’évaluation de l’impact de la densité de pulpe. Il s’inscrit dans le contexte du traitement d’un minerai mixte oxydé - sulfuré de cuivre et de cobalt provenant de la mine à ciel ouvert de KOV, caractérisé par la présence d’une gangue essent
Book 0076 Kalunga Marceline
KALUNGA WA KALUNGA Marceline, Prof. Dr. Ir. Jacob MASIALA
Le présent travail porte sur la contribution à la conception et à l’optimisation d’un protocole de recyclage hydrométallurgique à faible consommation d’énergie du cuivre issu des DEEE en utilisant un lixiviant biosourcé à Kolwezi. L’objectif principal était d’étudier la possibilité de récupérer le cuivre contenu dans les déchets électroniques par lixiviation hydrométallurgique à température ambian
Optimisation des paramètres du circuit de broyage pour maximiser le rendement de récupération du circuit de flottation des minerais mixtes riches en dolomie.
KATAYI MUKANHWA Gandhi, Dr .Ir jhon KASONGO WA KASONGO
La République démocratique du Congo abrite des impositions sur le cuivre et de lit, dont l'exploitation repose largement sur le traitement par flottation de minerai mixte, liant phases oxydées et sulfuées. Au concentrateur de Kamoto (KTC), exploité par noto copper company (KCC), ce traitement se heurte à la présence abondante de dolomite Mg(CO3)2 dans la gangue, ce qui dégrade la qualité du concen
Solvent extraction design consideration for the Tati Activox® plant
ROBLES, E., CRONJE, I.
The Activox® process, developed by Norilsk Process Technology, presents a hydrometallurgical solution for the treatment of diverse metal sulphide concentrates. This paper outlines the development and implementation of the Tati Activox® Project (TA®P), which began in 1998 and has progressed from laboratory scale testing in Australia to the successful operation of a demonstration plant in Botswana.
Determination of Copper in Organic Media from Solvent Extraction Mining Systems Via Portable Energy-Dispersive X-Ray Fluorescence Analysis
Z. Ruetz
Portable X-ray fluorescence (pXRF) analysis has gained popularity in geochemical and environmental applications as a cost-effective alternative to traditional analytical methods. This study presents a novel method for quantifying organic copper content in solvent extraction circuits by stripping the chelated metal with concentrated sulfuric acid and analyzing the resulting solution using pXRF. The
Metallurgical performance of a next generation coarse particle flotation cell in sulfide ore processing
Marly Carvalho, Cagri Emer
This study evaluates the performance of a novel coarse particle flotation (CPF) cell that operates using a froth-feeding mechanism, designed to simplify operation relative to fluidized-bed systems and to enhance coarse mineral recovery without requiring feed pre-classification or fluidization. Laboratory tests were conducted on copper – gold ore using two feed size distributions: a non-classified
The Role of Copper on the Crevice Corrosion Behavior of Nickel-Chromium-Molybdenum Alloys in Aggressive Solutions
A.K. Mishra, X. Zhang
The effect of copper on the localized corrosion of nickel-chromium-molybdenum (Ni-Cr-Mo) alloys was investigated in hot saline solutions through a comparative analysis of the behavior of N06059 and N06200 alloys. Electrochemical and surface analytical techniques were employed to assess anodic film growth kinetics and passive film properties, revealing no significant influence of copper on these pa
Reducing Treatment of Copper-smelting Slag: Thermodynamic Analysis of Impurities Behavior
Alexey Komkov, Rostislav Kamkin
A thermodynamic mathematical model was developed to analyze the behavior of lead (Pb), zinc (Zn), and arsenic (As) during the reducing slag cleaning process in the Vanyukov furnace. This study aims to investigate how various factors, such as temperature, oxygen partial pressure, and phase ratios, influence the behavior of these impurities. Through the application of the model, significant findings
The Hydro-Metallurgy of Copper
M. Eissler
This work presents a comprehensive overview of the hydro-metallurgical treatment of cupriferous ores, detailing the processes adopted and the manufacture of copper vitriol. The objective is to provide an in-depth understanding of the methodologies employed in treating copper ores through hydro-metallurgy, which has gained popularity due to its effectiveness. The methodology involves examining the
Copper Production Technology
A.K. Biswas, W.G. Davenport
This chapter provides a comprehensive overview of copper production technology, examining the historical context and improvements in methodologies throughout the years. The objective is to outline various processes involved in copper extraction and refining, including exploration, mining techniques, comminution, separation, and various metallurgical processes such as pyrometallurgy, hydrometallurg
543311380 Design of Agitated Leach Circuit
Kafumbila Kasonta Joseph
The reductive leaching of Copper and Cobalt ores using SO2 gas as reducing reagent is a complex process. During reductive leaching of Copper and Cobalt ores, first iron plays an important role as a catalyst because the direct dissolution of Heterogenite with soluble sulfite compounds is limited by migration into the solid pores, and secondly, iron has a saturation concentration controlled by the p
458394693 extraction metallurgy c b perry 123s
Dr. C.B. Perry
This document provides a detailed overview of extraction metallurgy, focusing particularly on copper and gold extraction processes. The objective is to explore various methods employed in the extraction of metals from ores, highlighting both pyrometallurgical and hydrometallurgical approaches, and addressing environmental concerns associated with these methods. Methodologically, it discusses speci
ETUDE DE L'INFLUENCE DU MANGANESE DANS LE CIRCUIT D'EXTRACTION PAR SOL VANT DU CUIVR, : 'UCLE SX-EW
Sabrina NGANDU BANZE, Ir Mans KABWIK
Les solutions clarifiées doivent préférentiellement être purifiées et enrichies afin de favoriser une bonne précipitation des métaux. Cela dit, certains ions comme le manganèse pourraient entraîner des problèmes rencontrés à l'extraction du cuivre. Le présent document a pour but d'analyser un problème pratique lors d'une extraction par solvant, plus précisément : l'impact du manganèse dans le circ
ETUDE COMPARATIVE ENTRE LE LIX984N ET L’ACORGA COMME EXTRACTANT ORGANIQUE EN VUE D’AMÉLIORER LES CONDITIONS D’EXTRACTION PAR SOLVANT AUX USINES DE LUILU
MWEMA MASENGO Dieudonné, Paulin KABANGA TSHOTA
Ce travail présente les résultats d’une étude comparative entre deux extractants de cuivre produit par deux firmes différentes. Il s'agit du LIX984N et l'Acorga, lesquels sont utilisées dans le circuit d’extraction par solvant des usines de Luilu. Cette comparaison s'est faite sur le pouvoir d'extraction et le rendement de stripage dans les mêmes conditions. Le ratio phase organique/phase aqueuse
ESSAI DE DECANTATION DU MINERAi CUPRO - COBALTIFERE EXTRAIT DU SITE ARTISANAL DE KAMILOMBE EN VUE D'UNE EXPLOITATION SEMI - INDUSTRIELLE
Grace MBUYU KAKULU, Ass. Ir. IL UNGA YAMBA
A fin de donner une plus-value a l'exploitation artisanale, nous avons pense a un traitement semi-industriel du minerai extrait du site artisanal de Kamilombe. C'est dans cette optique que ce travail a ete initie dans le but d'etudier la decantabilite de ce minerai apres une lixiviation prealable. Pour y arriver, nous avons realise les essais de decantation au laboratoire sur le minerai artisanal
Etude de l‘impact de la r
B, K
Cette étude vise à examiner l'impact de l'acide total dans le processus de lixiviation visant l'extraction de cuivre, de fer et d'aluminium, tout en analysant également la consommation d'acide dans la gestion des résidus après la récupération de l'uranium. La recherche a été menée à travers des expériences de laboratoire où différents essais de lixiviation ont été réalisés pour observer l'effet de
Etude de la synergies de deux collecteurs sécondaires (AM810 et METCOL11) sur la performance de la flotation des minérais sulfurés cas de Kinsenda Copper Company
MAKINA KATOMA Marcel, ILUNGA MUTOMBO
Cette étude vise à analyser les synergies de deux collecteurs secondaires, AM810 et METCOL11, sur la performance de la flottation des minerais sulfurés dans le cas de Kinsenda Copper Company. L'objectif est d'évaluer l'impact de ces collecteurs sur le rendement métallurgique et la récupération des métaux précieux. Pour ce faire, des essais de flottation ont été réalisés en laboratoire, en variant
Control of Copper Loss in Flash Smelting Slag
Karen Cornejo, Mao Chen
The pyrometallurgical route is a primary method for copper extraction from Cu–Fe–S ores, where the concentrate undergoes partial oxidation to form a Cu-rich matte, while impurities are relegated to the slag. This study aims to optimize the smelting process by minimizing copper loss in the slag, which is critical for improving recovery rates. High-temperature experiments were conducted to investiga
CHEMICAL COMPOSITION AND DUST GENERATION OF COPPER CONCENTRATE PARTICLES OXIDIZED UNDER SUSPENSION-SMELTING CONDITIONS
V.R. Parra-Sánchez, M. Pérez-Tello
The chemical composition and dust formation during the oxidation of copper concentrate particles under suspension-smelting conditions were investigated. The effects of initial particle size and oxygen concentration in the process gas on the particle composition, morphology, and mineralogy of the reacted particles along a laminar-flow reactor were tested. The chemical composition of the reacted par
Air Quality Benefits From Implementing Best Available Techniques in Copper Mining and Smelting Complex Bor (Serbia)
Vladanka Presburger Ulniković, Sanja Mrazovac
Since 2016, the impact of the best available techniques (BAT) on air quality in Bor is significant. Its performance is presented by the air quality assessment with respect to the average annual sulfur dioxide (SO2) emitted concentrations and the total SO2 volume emitted per year from the smelter and sulfuric acid plant, relative to the quantity of processed concentrate in the period when productio
A potential industrial waste–waste co-treatment process of utilizing waste SO2 gas and residue heat to recover Co, Ni, and Cu from copper smelting slag
Wan, Xingbang, Taskinen, Pekka
This study presents an innovative industrial waste–waste co-treatment process that utilizes waste SO2 gas and residue heat to recover valuable metals, specifically cobalt (Co), nickel (Ni), and copper (Cu), from copper smelting slag. The primary objective was to evaluate the efficacy of this method in metal extraction and to define the reaction mechanisms involved in the sulfation roasting followe
Value-added strategies for the sustainable handling, disposal, or value-added use of copper smelter and refinery wastes
Katarzyna Mikula, Grzegorz Izydorczyk
This study addresses the pressing environmental challenges associated with copper smelter and refinery wastes by exploring value-added strategies for their sustainable handling and disposal. The objective is to identify and assess innovative methods that can minimize the environmental footprint while maximizing resource recovery. The methodology includes a comprehensive review of existing literatu
Top-Blowing, Bottom-Stirring Process for Producing Blister Copper
Samuel W. Marcuson, Carlos Diaz
Reduction of sulfur dioxide emissions has been a continuous endeavor in the copper smelting industry, particularly during the transition from the 1970s to the 1990s at Inco's Ontario Division. This study aims to present the development and operational outcomes of a novel oxygen top-blowing and nitrogen bottom-stirring process for producing blister copper. The methodology included an extensive rese
Recent Improvements at the BCL Smelter
M.T. Malema, A.C. Legg
BCL Limited operates the only Flash Smelting Furnace on the African continent, located in Selebi-Phikwe, north-eastern Botswana. This paper aims to outline the recent improvements and expansions achieved at the BCL smelter, specifically focusing on the enhancements that have enabled an increase in production capacity from 40,000 to 60,000 tons per annum of high-grade sulphide matte containing nick
HIGH TEMPERATURE PROCESSING OF COMPLEX ORES
GERARDO ALVEAR FLORES, CARLOS RISOPATRON
With the gradual decrease in the grade of copper ores being processed, copper concentrates have become more complex with higher impurity and gangue content. This trend has had a detrimental effect on smelters as they have to increase throughput to maintain copper metal production, while increasing operating costs due to processing the increased amounts of secondary products and stabilizing waste s
Kinetics of copper leaching from direct‑to‑blister copper flash smelting slag by sulfuric acid
Krzysztof Gargul, Bożena Boryczko
Coppermaking from sulfide concentrates entails two major steps: smelting and converting. In continuous direct-to-copper smelting process these two steps are combined into one. The principal advantages of this process are: isolation of SO2 emission to a single, continuous, SO2-rich gas stream, minimization of energy consumption and minimization of capital and operating costs. Disadvantages of the p
Industrial Development of a Novel Sulfate System for Copper Pyro-Refi ning
P. Coursol, N. Stubina
This article presents the results of a series of industrial-scale tests conducted at the Noranda Horne smelter, focusing on a novel molten sulfate salt used for the copper pyro-refining process. The objective was to test a new technology that addresses the increasing levels of deleterious impurities in copper concentrates. Methodologically, 116 industrial-scale tests were performed, where variatio
Improving Environmental Protection as a Result of Non-ferrous Metallurgy Industry Waste Recycling
Khojiev Sh.T.
This study examines the significant environmental challenges posed by the non-ferrous metallurgy industry, particularly focusing on the recycling of copper slag produced during pyrometallurgical processes. The objective is to evaluate the potential for improving environmental protection through effective waste management strategies. Methodologically, the research analyzes the composition of copper
The possibility of using copper smelting dust to neutralize sulfuric acid
Sokhibjon Turdalievich Matkarimov, A. A. Yusupkhodjayev
This study explores the potential of utilizing copper smelting dust as a neutralizing agent for sulfuric acid, thereby conserving the use of costly copper pellets for this purpose. The research investigates the phase, mineralogical, and chemical composition of the smelting dust, alongside the feasibility of processing it through hydrometallurgical methods. The study employs water and sulfuric acid
Exergy in Copper Converting and Its Relation to SO2 Emissions
Jose´ A. Pineda, Gabriel Plascencia
Extractive metallurgy of copper is characterized by being energy intensive and also for producing large amounts of fugitive emissions. Particularly, traditional copper converting generates toxic off-gases with up to 7 vol% of SO2. The mass and energy balances show that the amount of SO2 in the process gases may be decreased by improving the energy usage. Furthermore, an exergy analysis reveals the
Selective Separation and Recovery of Ni, Cu and Cr from Electroplating Sludge via Hydrometallurgical Processes
Suhyeon Lee, In-Hyeok Choi
To produce high-purity nickel sulfate from nickel-bearing sludge generated in electroplating processes, this study evaluated a three-step hydrometallurgical pretreatment and purification process comprising sulfuric acid leaching, cementation, and neutralization–precipitation. In the leaching step, the application of 1–2 M H2SO4 at a 25 w/v% solids content achieved near-quantitative dissolution (≥
Solvent Extraction Methods in Metal Recovery
A M Pavilcius, M A Latko
This document outlines various solvent extraction methods used to recover metals from aqueous ore leach solutions. The objective was to improve the efficiency and yield of metal recovery processes, specifically focusing on uranium, copper, nickel, and cobalt. The methodology involves treating emulsions formed during extraction with specific reagents, such as water-soluble acrylamide copolymers and
Use of Continuous Ion Exchange For Removal of Environmental Contaminants From Waste Streams
M. J. Slater, B. H. Lucas
This study evaluates the application of continuous ion exchange technology for the removal of environmental contaminants from industrial waste streams. The objective is to assess the effectiveness of this method in treating polluted liquids generated by chemical processes. A systematic methodology was employed, which included designing a continuous ion exchange system, optimizing operational param
2025 Flores Hydrogen Peroxide in Chalcopyrite Leaching
Danny J. Flores, Teófilo A. Graber
Leaching represents a significant challenge for the mining industry due to its slow and incomplete kinetics under ambient conditions (20 ◦C, 1 atm) and its increased prevalence in global ore deposits. In this context, the use of hydrogen peroxide (H2O2) has proved to be a promising oxidizing agent for improving process efficiency. This article reviews the most recent breakthroughs in the use of H2
2026 Majzlan Cu Pb Zn Reservoirs Machine Learning
Juraj Majzlan
Here we use explainable machine-learning (ML) analysis to determine which variables, so-called features, are most important for the prediction of trace concentrations of Cu, Pb, and Zn in a large data set for igneous rocks. After data filtering and preparation, a gradient-boosted decision tree regression model is trained using eXtreme Gradient Boosting (XGBoost). Feature importance was evaluated q
2026 Armstrong Copper Cast Iron Thickness
Derrick Armstrong, Jun Ge
Research has been extensively conducted on cast irons to understand their solidification behavior and corresponding mechanical properties. Variations in the composition (for example, carbon contents) and microstructure of cast irons with different thicknesses have been studied. However, the kinetics of other solute elements, such as copper (Cu), have not been comprehensively investigated. This stu
IMG 0018 SCH
MWENZE MALENGE Akim, Christian TWITE KITWA
Ce rapport présente les résultats d'un stage effectué au sein de l'entreprise Kamoto Copper Company (KCC) à Kolwezi, visant à acquérir des connaissances pratiques sur les opérations minières et les méthodes d'extraction de minerais. L'objectif principal était de comprendre le fonctionnement de la mine souterraine ainsi que les différentes méthodes d'exploitation à travers une rotation dans les dép
From Waste to Resource: Critical Mineral Recovery and Environmental Impact Mitigation in Copper Smelting Slag
Aleksandar N. Nikoloski, Pritam Singh
Copper and cobalt are critically important metals for the transition to renewable energy and various aspects of modern life. Their production from primary sources, ores, necessitates metallurgical separation from the unwanted host materials, resulting in the generation of a huge amount of waste. Copper smelting slag is one of these metallurgical wastes, with 39 million tonnes of slag generated and
Recovery of valuable metals from copper slags as secondary resources: Selected laboratory-scale case studies
Fatma Arslan, Gülay Bulut
Pyrometallurgical extraction of metallic copper from copper concentrates generates several by-products, among which copper slag constitutes one of the most voluminous solid residues. These slags are generally composed of iron oxides, silica, calcium oxide, alumina, and varying amounts of unrecovered copper. Despite their common disposal by stockpiling or use as landfill material, copper slags may
VALORISATION PAR VOIE HYDROMETALLURGIQUE DES REJETS DE DECADMIAGE DE L'ANCIENNE USINE A ZINC DE KOLWEZI
KASHIBA KASONDE Jacques, KALONDA Emery
Ce travail présente les résultats de traitement par voie hydrométallurgique des rejets obtenus lors du décadmiage du circuit de purification de l'usine à zinc de Kolwezi, Ex-UZK en sigle. L'objectif est de valoriser les métaux contenus dans ces rejets appelés « boue bleue ». L'étude a porté sur un échantillon des boues dont l'analyse chimique a révélé 5,6 % cuivre, 34,8 % zinc et 4,63 % cadmium. L
Application of full factorial design to study the simulta 2013 Desalination
T. Berrama, N. Benaouag
The aim of this study is to investigate the simultaneous removal of zinc and copper from aqueous solutions by liquid–liquid extraction using a systematic statistical method. This study is conducted in two steps: firstly, preliminary extraction tests are performed to determine optimal operational conditions, including equilibrium time of 15 minutes and a pH range between 4.5 and 6.5. Secondly, a fu
Selective extraction of nickel cobalt and copper 2026 Separation and Purifi
Wen Li, Junnan Lu
Solvent extraction behaviour of nickel, cobalt and copper from ammonia – glycine alkaline solutions using ketoxime extractant LIX ® 84-IC was systematically investigated. Extraction kinetics, pH-dependent selectivity, equilibrium isotherms and multistage extraction performance were evaluated using single-metal and multi-component simulated pregnant leach solutions (PLS). Kinetic studies revealed t
Hydrometallurgical copper extraction from hematite-dominated copper ore
T. J. Ayodele, A. A. Daniyan
Copper extraction has mainly been via electrometallurgy or pyrometallurgy which are energy consuming. The study focuses on the copper extraction from hematite dominated copper ore deposit at Akiri town in Nasarawa state, Nigeria using economical hydrometallurgical processes for the recovery of copper at high purity. The experiments carried out in this work includes: chemical and mineralogical char
Modelling a copper electrowinning cell based on reactive electrodialysis
L. Cifuentes, J.M. Castro
This work reports the development of a mathematical model for the operation of a laboratory-scale copper electrowinning cell based on reactive electrodialysis (RED). Data were obtained from experiments and from the literature. The cathodic reaction was copper electrodeposition and the anodic reaction was ferrous to ferric ion oxidation. The catholyte was aqueous cupric sulphate in sulphuric acid a
Sequential hydrometallurgical – electrochemical process for high-purity Ag and Cu recovery from PV waste: Selective Ag electrowinning and sulfate-optimized Cu deposition
Suhwan Kim, Seyeon Cho
The transition to multi-busbar (MBB) photovoltaic modules utilizing silver-coated copper wires complicates the selective recovery of high-purity metals from end-of-life (EoL) waste. To address this, we developed an integrated hydrometallurgical – electrochemical process for the selective, chemical-saving recovery of Ag and Cu. The method involves nitric acid leaching followed by selective Ag elect
Copper electrowinning: 2018 global survey of tankhouse operating practice and performance
Sole, T.G., Davenport, W.G.
Copper electrowinning serves as a critical industrial process for copper production, constituting about 20% of the global output. This study investigates the operational benefits of detecting and correcting metallurgical short circuits (MSCs), a common cause of inefficiencies in the electrowinning process. The objective is to quantify how MSC detection during the cathode harvest cycle can enhance
Electrochemical Hydrodynamics Modeling Approach for a Copper Electrowinning Cell
K.R. Kim, S.Y. Choi
This study demonstrates a simulation based on a full coupling of electrochemical kinetics with the three-dimensional transport of ionic species in a flowing electrolyte through a simplified channel cell of copper electrowinning. The dependences of ionic electro-transport on the velocity of a stationary electrolyte flow were studied using a coupling approach of the electrochemical reaction model. T
Energy efficient copper electrowinning and direct deposition on carbon nanotubefilm from industrial wastewaters
Pyry-Mikko Hannula, Muhammad Kamran Khalid
Heavy metal pollution is one of the most serious environmental issues of today. Removal of one common pollutant, copper, from synthetic wastewaters (containing copper, iron, sulfur and sodium) and complex authentic metallurgical plant wastewater (containing copper, iron, aluminum, zinc, nickel, arsenic, sulfur and lead among others) was studied by electrowinning. Due to the complexity and low conc
Upcycling copper chips into Cu–Fe alloys via coating-assisted plasma sintering
M. R. Sabour, E. Taherkhani
Upcycling metal machining waste into functional engineering materials offers a sustainable pathway for value-added manufacturing. In this work, a new coated chip plasma sintering (CCPS) strategy was introduced to produce Cu–Fe alloys from discarded copper chips. Copper chips generated by machining were first coated with Fe by arc physical vapor deposition and then consolidated through cold compact
Copper extraction and phytotoxicity of organic acid leached mine tailings in Brassica napus
Vinicius H. De Oliveira, Mark Tibbett
Mine tailings pose environmental hazards but can also contain economically valuable metals like copper (Cu). Organic solvents, particularly low molecular weight organic acids (LMWOAs), are natural and biodegradable acids with great potential for Cu removal and tailings remediation. We evaluated the potential of citric, malic, maleic, malonic and lactic acids (concentration of 1 M) in extracting Cu
TRAITEMENT PAR VOIE HUMIDE D’UN REJET MIXTE A GANGUE TRES DOLOMITIQUE « CAS DES REJETS DE FLOTTATION DE RUASHI MINING/ PROJET MUSONOI »
BWAMBU BUPE Emmanuel, Jean-Marie KANDA
Ce travail présente une étude sur la lixiviation ammoniacale suivie d'une extraction par solvant des rejets fortement dolomitiques de Ruashi Mining. L'objectif principal était d'optimiser le processus d'extraction des éléments de valeur, comme le cuivre et le cobalt, présents dans les rejets, qui contiennent en moyenne 0,77 % Cu et 0,08 % Co. Les méthodologies employées impliquent des essais de li
Selective Electrochemical Leaching of Copper from Fragmented Waste Printed Circuit Boards in an Alkaline Sulfate–Glycine Electrolyte
Olesya Tyumentseva, Kaster Kamunur
Waste printed circuit boards (WPCBs) are a highly concentrated secondary source of copper. However, their complex and heterogeneous composition significantly complicates the selective extraction of metals. This study examined the feasibility of direct electrochemical leaching of copper from used PCB fragments in a sulfate–glycine alkaline electrolyte. The PCB fragments were used directly as a comp
Enrichment of Copper and Cobalt from Pyrite Cinder via Cyclic Leaching: Schwertmannite-Type Iron Precipitation at Low pH
Zhisheng Shi, Guanyong Sun
Effective iron removal from highly acidic leachates without neutralizer addition is a long-standing challenge in hydrometallurgy. For Cu-Co-bearing pyrite cinder, we demonstrate that a cyclic leaching process achieves this outcome. Operating entirely without neutralizers, the process consumed 96% of residual acid, enriched Cu and Co 4.76- and 3.88-fold, and removed 48.2% of iron, all while maintai