Copper Leaching Behavior from Waste Printed Circuit ... - J-Stage

A novel energy-saving hydrometallurgical recovery process for copper from electronic scrap employing the Cu(I)-ammine complex has been presented on the basis of a thermodynamic consideration. In order to experimentally explore the feasibility of the leaching stage in this process, the copper leaching behavior from a...

Leaching behavior of copper using electro-generated chlorine in ...

The leaching behavior of metallic copper has been investigated using chlorine electro-generated at the anode in 1.0 mol/L HCl solution. An electrochemical reactor divided into two compartments by an anion exchange membrane was employed for these experiments. Various parameters, viz., current density, chloride...

Leaching behavior of copper from waste printed circuit boards with ...

In this work, a Brønsted acidic ionic liquid, 1-butyl-3-methyl-imidazolium hydrogen sulfate ([bmim]HSO4), was used to leach copper from waste printed circuit boards (WPCBs, mounted with electronic components) for the first time, and the leaching behavior of copper was discussed in detail. The results showed that after the...

Copper Leaching Behavior from Waste Printed Circuit Board in ...

Jul 15, 2006 ... Copper Leaching Behavior from Waste Printed Circuit Board in Ammoniacal Alkaline Solution. Kazuya Koyama1, Mikiya Tanaka1 and Jae-chun Lee2. 1Metals Recycling Group, Research Institute for Environmental Management Technology,. National Institute of Advanced Industrial Science and...

The pH-dependent leaching behavior of slags from various stages of ...

J Environ Manage. 2017 Feb 1;187:178-186. doi: 10.1016/j.jenvman.2016.11.037. Epub 2016 Nov 25. The pH-dependent leaching behavior of slags from various stages of a copper smelting process: Environmental implications. Jarošíková A(1), Ettler V(2), Mihaljevič M(1), Kříbek B(3), Mapani B(4). Author information:

Copper Leaching Behavior from Waste Printed ... - ResearchGate

Dec 21, 2017 ... In order to experimentally explore the feasibility of the leaching stage in this process, the copper leaching behavior from a printed circuit board (PCB) in ammoniacal alkaline solutions has been investigated under a nitrogen atmosphere. Copper in PCB was oxidized by Cu(II) to form Cu(I)-ammine complex...

Copper Leaching Behavior of Iron-Oxide Hosted ... - ResearchGate

Iron-oxide hosted copper-gold (IOCG) deposit is a newly recognized raw material for copper recovery. A poor understanding of its hydrometallurgical behavior has limited the development of its commercial practice for copper extraction. In this paper, the leaching behavior of. IOCG ore in sulfuric acid medium containing...

Leaching Behavior of Copper, Zinc and Lead ... - Semantic Scholar

Leaching Behavior of Copper, Zinc and Lead from Contaminated Soil with Citric Acid. Hongki Park1,+1, Kyungbae Jung1,+1, Richard Diaz Alorro2 and Kyoungkeun Yoo1,+2. 1Department of Energy and Resources Engineering, Korea Maritime University,. Taejong-ro 727, Yeongdo-gu, Busan, 606-791, Korea.

Parametric Effects on Leaching Behavior of Nickel-Copper Matte in ...

May 24, 2013 ... Particulate Science and Technology: An International. Journal. Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/upst20. Parametric Effects on Leaching Behavior of Nickel-. Copper Matte in Ammonia. E. Muzenda a. , I. M. Ramatsa a. , F. Ntuli a.

Parametric Effects on Leaching Behavior of Nickel-Copper Matte in ...

Leaching, which is described as the extraction of soluble constituents from a solid by means of a solvent, is an important separation technique in the refining of precious metals from their matte. It is, therefore, important to investigate the extraction behavior of metals from the matte, which is the focus of this study. This study...

pH Dependent Leaching Behavior of Zn, Cd, Pb, Cu - Lirias - KU ...

Oct 15, 2013 ... pH Dependent Leaching Behavior of Zn, Cd, Pb, Cu and As from Mining Wastes and Slags: Kinetics .... Spent copper slag. TCLP test. pHstat test. Low leaching of heavy metals, making the slag suitable to be used as a fill material for land reclamation. [10] ... Rotary holding furnace (RHF) copper slag. TCLP...

Pyrite Leaching Behaviour under CESL Process Conditions H ... - Teck

Pyrite Leaching Behaviour under CESL Process Conditions. H. Salomon-De-Friedberg. Teck Resources Limited. 12380 Horseshoe Way. Richmond, B.C., Canada V7A 4Z1. ([email protected]). ABSTRACT. The amount of pyrite in copper concentrates fed to the CESL Process can vary appreciably.

An Investigation into the Effect of Temperature on the Leaching of ...

The effect of temperature on the leaching behaviour of copper matte was investigated by varying it from 50˚C to. 70˚C while keeping the other variables constant and also to determine what kind of reaction involved. The results obtained indicated that increasing the temperature from 50˚C to 60˚C increased both the rate and.

Nickel Stabilization Efficiency of Aluminate and Ferrite Spinels and ...

Jul 25, 2006 ... The leaching behavior of NiAl2O4 was consistent with congruent dissolution without significant reprecipitation, but for NiFe2O4, ferric hydroxide precipitation was ... Copper Stabilization via Spinel Formation during the Sintering of Simulated Copper-Laden Sludge with Aluminum-Rich Ceramic Precursors.

LEACHING OF METALS FROM WASTE PRINTED CIRCUIT BOARDS

This study aims to understand the acid-leaching behavior of metals from 2 to 4 mm waste printed circuit boards (WPCBs) containing 22.0% ± 1.1 Cu, 6.7% ± 0.2 Ca, 0.68% ± 0.02 Sn, 0.59 ± 0.01 % Pb, 2.71% ± 0.08 Al, 0.22% ± 0.01 Fe, etc.. Copper leaching was increased for sulfuric acid concentrations up to 1.2 mol/L and...

Leaching of copper - KiwiScience

Leaching of copper from contaminated soil following the application of. EDTA. ... Here we describe the transport of copper during the leaching of a contaminated soil ..... show this behaviour. The EDTA-breakthrough curves show the same behaviour, but it is less pronounced. Two simulated curves are shown for EDTA with 1...

leaching of commonly used impregnation agents affected by wood ...

The objective of the study was to assess the influence of wood properties on copper leaching from wood treated with preservatives. Scots pine (Pinus sylvestris L.) trees were harvested from two different stands in. Norway and one in Denmark. Sapwood was cut to samples (20 x 20 x 50mm) in as many layers as the radial...

Leaching Behavior of Heavy Metals and Transformation of Their ...

Nov 21, 2012 ... Citation: Zheng S-a, Zheng X, Chen C (2012) Leaching Behavior of Heavy Metals and Transformation of Their Speciation in Polluted Soil Receiving .... 265.41 g·kg−1 for clay (<0.002 mm), 51.84 mg·kg−1 for total copper, 43.92 mg·kg−1 for total lead, 0.36 mg·kg−1 for total cadmium, 121.23 mg·kg−1 for total...

on the leaching behavior of uranium- bearing resources in ...

Alkaline leaching of uranium from limestone media has been practiced extensively in the past; however, cutting-edge ... determined, as well as solubility behavior of candidate condensed-species (precipitates). Also, two suites of ..... Figure 3.13 Copper extraction as a function of leaching time and ozone concentration …

Agglomeration and leaching of a crushed secondary sulfide copper ...

None of the agglomeration conditions affected copper recovery at 90 days of leaching. Following leaching, acid-resistant agglomeration aids were evaluated to identify those with a potential to improve agglomerate stability and potentially, leaching behavior. Two cationic polymers were selected from an assortment of...

Biochar Amendment Affects Leaching Potential of Copper and ...

Nov 10, 2014 ... mitigation of leaching risk for some nutrients. Biochar Amendment Affects Leaching Potential of Copper and. Nutrient Release Behavior in Contaminated Sandy Soils. Santanu Bakshi, Zhenli L. He,* and Willie G. Harris. Soil contamination by Cu has been reported to increase Cu loading in surface runoff...

LEACHING OF LOW-GRADE COPPER ORES - CEON-a

Dec 14, 2016 ... solution was significantly lower than the concentration of copper ions, with the amount of 0.67 g dm-3. Figure 3b shows similar behaviour like during the leaching process of the ore from cementation zone of the ore body. Obtained kinetic curves of the leaching confirm that, but the copper concentration in the...

Applying Softcomputing for Copper Recovery in Leaching Process

Oct 30, 2017 ... This paper describes the work done with ANN to generate behavior predictions of the pile in the copper leaching domain. The use of ANNs has been used in combination with other techniques commonly used as a predictor in the mining industry, such as linear regression, with the aim of contrasting and...

Influence of wood sample size and species on the leaching of ...

of copper in pine sapwood specimens was higher than that in spruce specimens. Moreover, copper leaching was greater in comparison to leaching chromium. Keywords: Copper, chromium ... it appears that the leaching behavior of preservatives in larger specimens and exposed under service conditions will be different...

Recovery of nickel and copper from metal finishing hydroxide ... - ASJP

Dec 3, 2016 ... leaching behavior of metal hydroxides and metal sulfide sludge may be the study reported by Hohman who developed a kinetic model of precipitate leaching [41]. The leaching process was based upon an area-dependent mass transfer controlled process. The driving force for the leaching process was...

Biosorption performance, combustion behavior, and leaching ...

Clean Techn Environ Policy (2014) 16:979–986 DOI 10.1007/s10098-013-0680-9. ORIGINAL PAPER Biosorption performance, combustion behavior, and leaching characteristics of olive solid waste during the removal of copper and nickel from aqueous solutions Ajmia Chouchene • Mejdi Jeguirim Gwenae¨lle Trouve´

1 Leaching behaviour and the solution consumption of uranium ...

Leaching behaviour and the solution consumption of uranium-vanadium ore in alkali ... carbonate-bicarbonate (alkaline) heap leaching of low-grade Ca-carbonate-rich uranium ores has recently gained ... Future uranium heap leach projects will benefit from the experience gained from copper and gold heap leaching...

Leaching Behavior of AGREMAX Collected from a Coal-Fired Power ...

Analyte Aluminum Antimony Arsenic* Barium Beryllium Boron Bromide Cadmium Calcium Cesium Chloride Chromium* Cobalt Copper Dissolved Inorganic Carbon Dissolved Organic Carbon Fluoride Iron Lead Lithium Magnesium Manganese Molybdenum Nickel Nitrate Nitrite Phosphate Phosphorus Potassium Selenium...

Oxygenated Leaching of Copper Sulfide Mineral under Microwave ...

Oxygenated Leaching of Copper Sulfide Mineral under Microwave-. Hydrothermal Conditions ... The direct electrolysis of copper sulfide minerals is viewed as the most cost effective and environmentally clean .... 33 165-172 (1999). 8. W. Ding; “Leaching behavior of complex copper sulfide concentration with ferric chloride.

The leaching and adsorption behaviour of gold ores - Minerva Access

Figure 4.11 SEM photograph of Cu2Fe(CN)6.xH20 precipitated during the leaching of the copper concentrate at an initial free cyanide concentration of 40000ppm. 108. Figure 4.12 Leaching of gold from the copper concentrate by a Cu(CN)4. 3. - solution. 111. Figure 4.13 Behaviour of cyanide during leaching of the cof-per.

Influences of ammonia contamination on leaching ... - SAGE Journals

influence the leaching behaviour of air-pollution-control (APC) residues. Batch tests were conducted to investigate the impacts of ammonia levels on leaching of a range of metals (sodium, potassium, calcium, aluminium, chromium, iron, lead, cadmium, copper, nickel and zinc), as well as chloride and dissolved organic...

A Study on Leaching Behavior of Na, Ca and K Using Column ...

behavior of leaching of sodium, calcium and potassium in landfills. In the column leach apparatus, two different layers of contaminated and uncontaminated soils of different height ratios (ratio of depth of ... leaching of copper using sulphuric acid as the leaching agent. These experiments enabled to determine the hydraulic.

leaching and rheological behaviour of chlorite with fluorite in ...

Rheological studies showed an increase of the yield stress during the leaching of chlorite with fluorite. ... of chlorite sample-specific difference in leaching behaviour in concentrated acid at an elevated temperature ..... Acta 48: 205-2217. Dreisinger, D. (2006), Copper leaching from primary sulphides: options for biological.

Kinetics of acid-oxygen leaching of low-sulfur Ni-Cu matte at ...

numerous studies on the leaching of Ni-Cu matte have been reported. The leaching behaviors of nickel-copper matte at atmospheric pressure were studied[3−6]. The studies on high pressure leaching of nickel-copper matte were also conducted[7−8]. Especially, a semi-empirical mathematical model for the acid-oxygen...

acidic leaching of copper and tin from used consumer ... - doiSerbia

3.2 Leaching. Leaching experiments consisted of two stages. In the first stage, the behavior of metals (copper, tin) in the non-oxidative leaching conditions was studied. The aim of this stage was to determine the influence of thermal pretreatment on copper and tin lixiviation. Based on the results of the first stage conditions for.

Metal Leaching of Brazed Stainless Steel Joints into Drinking Water

corrosion resistant stainless steel is replacing copper alloys and zinc ... joints as well as high copper leaching rates into the drinking water. .... 0.0003 copper it is 3 μg/l. Values below these limits will be displayed as n.n. - not noticeable. To determine the time dependent metal leaching behavior of the brazed samples a.

Leaching behavior of copper using electro-generated chlorine in ...

The leaching behavior of metallic copper has been investigated using chlorine electro-generated at the anode in 1.0mol/L HCl solution. An electrochemical reactor divided into two compartments by an anion exchange membrane was employed for these experiments. Various parameters, viz., current density, chloride...

Copper extraction - Wikipedia

All primary sulfide ores of copper sulfides, and most concentrates of secondary copper sulfides (being chalcocite), are subjected to smelting. Some vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution, but this is a minor part of the...

Kappes, Cassiday & Assoc. | Reno | Mining | Metallurgy ...

Heap Leaching - SME Mining Engineering Handbook. Travis J. Manning ... Chloride Leaching for Silver, Copper, Lead, and Antimony - Industrial Experience in the 600 Tonne/Day Itos, Bolivia Plant. Daniel W. ... Comparison of Vat and Heap Leaching Behavior in Laboratory Evaluations of Gold/Silver Ores. Russell B. Dix...

Study on Leaching Test of Oxidized Copper Ore in Yunnan

Abstract—The extraction of copper from highly oxidized copper ore in sulfuric acid solutions was examined in. Yunnan Province. During the leaching of copper, the leaching rate of cuprous concentration was affected by various parameters such as particle size, leaching time, the weight ratio of liquid to solid and the...

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