copper recovery Articles
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Microbiological leaching of chalcopyrite: an environmentally sound approach to processing a sulphide copper concentrate
Mineral sulphides are the main source of copper, from which this metal is recovered by pyrometallurgical processing after a flotation procedure. These processes generate high emissions of SO2 gases, which, in many cases, are discharged into the environment. The bioleaching method had been successfully used in copper recovery from low grade and secondary sulphide ores. Only recently, has it begun ...
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Japan - Electric and electronic cables’ recycling - Case Study
Customer: MORITA Country: Japan Machinery: CABLES’ RECYCLING LINE Line composed by the PMG600 pre-shredder and by the latest Guidetti granulator Sincro415Mill, with production capacity up to 450 kg/h, for mixed cables’ recycling. Advantages: total copper recovery thanks to the zig-zag separator for the separation of rigid cables and to the refiner, for a 99,9% purity level, without ...
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Italy - Electric and electronic cables` recycling - Case Study
Customer: ADRIATICA ROTTAMI Country: Italy Machinery: CABLES’ RECYCLING LINE Line composed by the PMG600 pre-shredder and by the latest Guidetti granulator Sincro530mill, with production capacity up to 450 kg/h, for mixed cables’ recycling. Advantages: total copper recovery thanks to the zig-zag separator for the separation of rigid cables and to the refiner, for a 99,9% purity ...
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Flotation of copper residues with high oxidation and combination ratios
Sulphidising flotation was employed to successfully recover copper residues with high oxidation and combination ratios and the main components of the mineral chrysocolla (CuSiO3). Sodium sulphide (Na2S), ammonium sulphate ((NH4)2SO4) and ethylenediamine phosphate were used as the sulphidising agent, sulphidising accelerator and the activator, respectively. The proper dosage ratio of Na2S to ...
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Morocco - Cables’ recycling from industrial waste - Case Study
Customer COFICAB Country Morocco Machinery Recycling Line for Electric and Electronic Cables In the cables’ manufacturer field, this Guidetti line composed by PMG400 pre-shredder and the newest Sincro315mill, with production up to 150 kg/h, allows the recycling of cables coming from industrial waste, recovering both copper and plastic. Advantages: total copper recovery thanks to the ...
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A novel technology for on-site cupric oxide recovery from cupric chloride etchant waste
For on-site copper recovery in print circuit board factories, we propose a novel technology to obtain cupric oxide with a low content ratio of chloride from high chloride concentration waste, such as cupric chloride etchant waste. Our technology is designed to avoid formation of double salt and accumulation of cupric hydroxide. In the proposed method, etchant waste mixed with hydrogen peroxide ...
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United States - Copper recovery (tailings processing) - Case Study
Country: United States Machinery: Copper/plastic recycling line, multiple-separation line A big Guidetti line consisting of 4 refiners and separators with production up to 5 ton/h. It allows the recovery of all copper in tailings, coming from cables’ processing lines. Advantages: Total copper recovery Higher plastic purity Installed in 2016, it is a benchmark for the American ...
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Waste Wire Recycling
The recovery of insulated copper wire (ICW) offers recyclers fast and high returns for their initial investment. Wires not recovered by traditional eddy current machines can be effectively sorted with electromagnetic sensor-based technology. The upgrading of stripped wires, waste cables and conduit, ensure a high value revenue stream. Our intelligent, sensor-based sorting systems detect copper ...
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Sequential recovery of copper and nickel from wastewater without net energy input
A novel bioelectrochemical system (BES) was designed to recover copper and nickel from wastewater sequentially. The BES has two chambers separated by a bipolar membrane and two cathodes. Firstly, the copper ions were reduced on a graphite cathode with electricity output, and then with an additional bias-potential applied, the nickel ions were recovered sequentially on a copper sheet with ...
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Spain - Copper’ recovery from plastic, 3000 kg/h input - Case Study
Customer: Josè Jareno Country: Spain Machinery: LINE Double Guidetti line composed by 2 refiners Turbo625/4 and 2 separators Robi151, with production up to 1200 kg/h, to totally recover all the copper present in the plastic waste after cables’ recycling processes. Indicated for all working plants of the competition with a high loss of copper into plastic. Installed beginning ...
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The use of step and pulse tests to design activated carbon adsorption columns for recovery of copper ions from aqueous industrial effluents
Dynamic experiments were carried out on the adsorption of copper ions in a laboratory packed bed of activated carbon. Both pulse and step change inputs were used. Measurements were reproducible and replicate measurements furnished nearly identical parameters for a conventional heterogeneous model of the activated carbon bed, assuming a Langmuir adsorption isotherm. Bed depth had little effect on ...
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The recovery of copper from a copper mine effluent in a hybrid flotation/microfiltration cell
A new hybrid process for cleaning wastewater, combining flotation and membrane microfiltration, was investigated. The hybrid process combined the advantages of both flotation and membrane separation: the flotation cell removed a large proportion of suspended solid particles, while the membrane module produced clean water permeate effluent. The hybrid cell performance has been studied in depth and ...
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Roman and modern slag at S. Domingos mine (IPB, Portugal): compositional features and implications for their long-term stability and potential reuse
S. Domingos ores have been exploited for Cu and S from antiquity to 1966. Slag is composed of Fe-, Ca-, Zn- and Pb-rich silicate glass, fayalite, hedenbergite, Fe-spinel, and blebs of Fe-, Cu-, Zn- (and Pb-)sulphides, minor sulphosalts and Cu-Zn-Pb-iss with evidence for low-T exsolution and reactions. Silicates and oxides often crystallised far from equilibrium out of undercooled melts. ...
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Preconcentration of Cu (II) from seawater using a novel and stable phenol–formaldehyde resin
Preconcentration of Cu (II) from seawater using a novel phenol–formaldehyde (P–F) resin was investigated. 1,2-dihydroxybenzene-4-azo-3-hydroxybenzene-formaldehyde resin (DAHBF) was prepared by condensing 1,2-dihydroxybenzene-4-azo-3-hydroxybenzene with formaldehyde (1:2 mole ratio) in the presence of oxalic acid as catalyst. Polychelates were obtained when the DAHBF was treated with the aqueous ...
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How to separate copper and plastic from scrap copper wire?
Scrap copper wire is made of copper and plastic, which can be separated and reproduced new products. The effective separation of copper and plastic has always been a top priority in the later stage of the scrap copper wire recovery. At present, there are three main separation methods to separate copper and plastic from scrap copper wire: fire burning, chemical dissolution and dry physical ...
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Removal of copper ions from aqueous solution by the sodium salt of the maleic acid-allylpropionate-styrene terpolymer
The sodium salt of the maleic acid-allylpropionate-styrene terpolymer was used for recovery of copper ions from aqueous solution. Effects of contact time, sorbent weight and initial Cu2+ ion concentrations on removal efficiency were tested. The maximum experimental sorption capacity of the sorbent for copper ions is 0.71 g g−1. The sorption isotherm of copper ions onto a prepared polymer ...
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Optimizing the recovery of copper from electroplating rinse bath solution by hollow fiber membrane
This study aimed to recover and remove copper from industrial model wastewater solution by non-dispersive solvent extraction (NDSX). Two mathematical models were developed to simulate the performance of an integrated extraction–stripping process, based on the use of hollow fiber contactors using the response surface method. The models allow one to predict the time dependent efficiencies ...
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Membrane contactors (NDSX and EPT): an innovative alternative for the treatment of effluents containing metallic pollutants
This work presents an overview of membrane–based solvent extraction technologies using membrane contactors as an innovative alternative for the remediation of effluents containing metallic pollutants. The discussion is focused on the description of Non–Dispersive Solvent Extraction (NDSX) and Emulsion Pertraction Technologies (EPTs). Three case studies are reported to demonstrate the viability of ...
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Integration of polyelectrolyte enhanced ultrafiltration and chemical reduction for metal-containing wastewater treatment and metal recovery
Chemical reduction was firstly employed to treat synthetic wastewaters of various compositions prepared to simulate the retentate stream of polyelectrolyte enhanced ultrafiltration (PEUF). With fixed Cu:polyethylenimine (PEI) monomer:dithionite molar ratio, increasing copper concentration increases copper removal efficiency. Under fixed Cu:dithionite molar ratio and fixed Cu concentration, ...
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Integration of polyelectrolyte enhanced ultrafiltration and chemical reduction for metal-containing wastewater treatment and metal recovery
Chemical reduction was firstly employed to treat synthetic wastewaters of various compositions prepared to simulate the retentate stream of polyelectrolyte enhanced ultrafiltration (PEUF). With fixed Cu:polyethylenimine (PEI) monomer:dithionite molar ratio, increasing copper concentration increases copper removal efficiency. Under fixed Cu:dithionite molar ratio and fixed Cu concentration, ...
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