Processing of copper electrorefining anode slime: a review ...

2013-7-18  Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper.

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Processing of copper electrorefining anode slime Request

2009-12-1  The industrial process chain for recovering the metal values from copper anode slimes is often tailored based on the features of the raw materials, and it may be

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Copper Refining Electrolyte and Slime Processing ...

Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper

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Mineralogical Characteristics of Copper Electrorefining ...

2019-5-26  A new approach for the treatment of copper electrorefining anode slime based on hydrometallurgical route involving sulfuric acid leaching with additives such as

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Copper Anode Slime Recovery-Copper- - Metalcess

Anode slime is a byproduct from copper or lead electro-refining process. The copper/lead anode slime usually contain As, Sb, Bi and precious metals like gold and

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Anode slime behaviour in a laboratory‐scale copper ...

Combining conventional electrochemical measurements, laser-based visualization and digital image processing, the movement of anode slime, its spatial distribution

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Hypothesis about the origin of copper electrorefining slime

1994-1-1  In copper electrorefining slime one can observe a considerable quantity of spherical particles, some of which are hollow [2-4]. Our data [2,5] show that the spherical

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Tellurium, from Copper Anode Slime to High Purity

2020-10-6  The slime is continuously formed during the electrorefining of copper. Insoluble elements and compounds fall into the bottom of the electrorefining tank as well

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Integrated process for recycling copper anode slime from ...

2017-11-1  An integrated process for copper anode slime from e-waste has been raised, as seen in Fig. 2. The process includes four sections, namely precious metals

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Metallurgical Process for Total Recovery of All ...

Tellurium is a rare metalloid that is vastly produced from copper anode slime, which is a by-product of the copper electrorefining process. Choosing the

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Processing of copper electrorefining anode slime: a review ...

Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have been made by the researchers to extract them following pyro-, pyrohydro ...

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A study of anodic slime behaviour in the electrorefining ...

1995-2-1  The kinetics of anode slime formation and propagation were studied in a laboratory-scale copper electrorefining apparatus. Laser-based illumination and digital image processing of videotaped records of slime movement, combined with current/time monitoring and polarization experiments, provide quantitative information about the complex interaction between characteristic parameters of the copper ...

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Processing of copper electrorefining anode slime: a review ...

Abstract. Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have been made by the researchers to extract them following pyro ...

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Copper Refining Electrolyte and Slime Processing ...

Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and Bi) and some transition metals (Mt) co-dissolved ...

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Mineralogical Characteristics of Copper Electrorefining ...

2019-5-26  A new approach for the treatment of copper electrorefining anode slime based on hydrometallurgical route involving sulfuric acid leaching with additives such as manganese dioxide and sodium chloride has been developed at National Metallurgical Laboratory (NML), Jamshedpur, India. Mineralogical characterization of the anode slime and the residues after various leaching treatments,

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CHARACTERIZATION OF ADHERENT ANODE SLIMES IN

2017-4-28  The following subchapters present in more detail the copper electorefining process and different factors affecting the adherent anode slimes. 2.1 The electrorefining of copper In the electrorefining process, copper is dissolved electrochemically from the impure cop-per anode into the electrolyte and then electrodeposited as pure copper.

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Electrorefining Process of the Non-Commercial Copper

2021-7-28  fining process and could be explained as a copper sulfate layer formation on an anode surface [6]. Cu2O form was registered in the anodes with oxygen content in the range of 0.1–0.3%. This form was also registered in the slime present on the anode surface. Through the reaction of copper (I) oxide form and sulfuric acid, a partial dissolution ...

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Settling Properties of Copper Electrorefining Anode Slimes

2019-1-1  Typically, the industrial copper electrolytes contain 40–60 g/dm3 Cu2+, 130–220 g/dm3 H2SO4, 0.04–25 g/dm3 Ni2+, 0.005–30 g/dm3 As, and have operating temperature of 55–70°C. In optimal electrorefining process, the settling rate of anode slime is sufficiently high to avoid the risk of getting the slime entrapped in copper cathodes.

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Electrorefining of Copper - UFRGS

2007-6-21  Electrorefining of Copper 1. Electrorefining – General Introduction In an electrorefining process, the anode is the impure metal and the impurities must be lost during the passage of the metal from the anode to the cathode during electrolysis, i.e. the electrode reactions are, at the anode: M → Mn+ + ne-and at the cathode: Mn+ + ne-→ M

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Separation and recovery of copper in Cu−As-bearing

2021-4-1  During the decopperization of electrolyte by electrowinning, the arsenic deposits as a black slime along with copper. Such a Cu−As- bearing copper electrorefining black slime (Cu−As- bearing slime, for short) is characterized by high contents of copper and arsenic in the form of Cu−As compounds, such as Cu3As and Cu(HAsO4) [6,7].

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Processing of copper electrorefining anode slime: a review ...

Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have been made by the researchers to extract them following pyro-, pyrohydro ...

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Mineralogical Characteristics of Copper Electrorefining ...

2019-5-26  A new approach for the treatment of copper electrorefining anode slime based on hydrometallurgical route involving sulfuric acid leaching with additives such as manganese dioxide and sodium chloride has been developed at National Metallurgical Laboratory (NML), Jamshedpur, India. Mineralogical characterization of the anode slime and the residues after various leaching treatments,

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Characteristics and Processing of Copper Refinery Anode

2021-8-10  The anode slime obtained from the copper electrorefining tank contains several valuable elements. The physico-chemical characteristics of the anode slime determines the processing route to recover these elements. The slime invariably

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Processing of copper electrorefining anode slime: a review ...

Abstract. Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have been made by the researchers to extract them following pyro ...

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Anode Slime Gained During Electrolysis Process of ...

2021-8-25  process in order to yield the anode slime. Three types of secondary copper anodes are electro refined in an electrolytic system, where the electrolyte is an acid of copper sulphate solution. As a result of the electro-refining process the anode slime has been gained as secondary product.

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Why is impure copper used as an anode in Electrorefining ...

What is the weight of anode after Electrorefining process? The copper anode contains many soluble and insoluble impurities. During the electrorefining insoluble anode impurities, amounting about 3 to 5 kg/tonne of anode, fall to the bottom of the cell as slimes, which contain Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM) along with some amount of Fe, Pb, Ba, etc.

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LEACHING BEHAVIOR OF THE ANODE SLIME

2018-9-12  Fig. 1 SEM micrographs of a typical anode slime (a,b) obtained by electrorefining Sn-Ag-Cu anodes in SnCl. 2-HCl solutions, and the relevant overall EDS spectrum (c). Metallic tin can be dissolved in boiling and concentrated hydrochloric acid [2]. Silver is virtually inert and copper is less likely to dissolve in this medium [5]. Therefore, it is

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v116n12a9 Extraction of copper and gold from anode

2016-12-14  recovery of copper and gold from anode slime by solvent extraction and leaching. This process has to be carried out at the optimum operating conditions, and also economically, for possible scale-up. 268542-1923$9,86!7$1 The copper anode slime of Sarcheshmeh Copper Complex was used in this study, and the reagents (sulphuric acid 88%,

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HYDROMETALLURGICAL PROCESSING OF ANODE

process, the produced anodic slime layer and the anode surface are illustrated by the pictures in Figure 1. The lowest current density experiment was carried out in a different cell of semi-industrial scale. The slime layer was removed from the anode surface by scraping, as shown in Figure 2a.

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The effect of electrolyte additives on cathode surface ...

2011-5-30  copper electrorefining plants. Hence the dosage and control of electrolyte additives has become ... copper and minimum anode slime and electrolyte entrapment on the cathode (Biswas et al.1999). With time the less active long ... the nucleation process. Thiourea is a small organic molecule (Figure 6) that reduces Cu+2 to Cu+ forming a ...

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