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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 ...
The slime is collected inside anode bags surrounding silver Doré anodes and can be further processed using the Outotec Gold Refining process for recovery of gold and PGMs. The non-dissolved anodes remaining after electrolysis are recycled for smelting and casting of new silver Doré anodes.
Anode slime which is used as a raw material in the production process, contains even up to 60 mass % of selenium that exceeds the selenium content of max 20 mass % in anode slimes from other world refineries. The purpose of this paper is a choice of method and equipment …
The anode slime was collected from the electrolytic cells at Sarcheshmeh Copper Complex. XRF spectroscopy was used for mineralogical characterization of the slime, and the results are shown in Table I. The anode slime analysis by the ICP– MS method is shown in Table II. The anode slime contained approximately 3.5% copper and 0.14% gold.
A hydrometallurgical process is provided for the recovery of tellurium as elemental tellurium powder from copper refinery anode slime containing high amount of lead. The process involves the removal of copper and lead from anode slime followed by the recovery of tellurium as elemental powders. An economical and environment friendly process is provided for producing tellurium from a high lead ...
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 …
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It is well known that anode slime is the by-product in the electrolysis process, which is an important source of various valuable metals(Guo et al., 2017b). In order to extract tellurium and bismuth, the treatment of anode slime or by-products after processing mainly includes pyrometallurgy and …
Anode slime emerging during the electro-refining phase in copper production is one of the economically pre-scrap wastes due to having the significant amount of valuable metals (Au, Ag, Cu, Te, Se, etc.) (Chen et al. 2018).Since the composition of the anode slimes can vary from one refinery to another, valuable metals extraction from anode slime as secondary sources differs from each other ...
Hydrometallurgical processing of copper anode slimes has the following advantages: capital costs are relatively low when compared to those for a smelter, process may be applied to small and large operations, air pollution by sulfur dioxide is eliminated, equipment may …
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Abstract: The copper anode slime is a by-product of copper electrolytic refining. It is an important raw material for the recovery of precious metals. With air rather than oxygen as the pressurized gas, pressure leaching pretreatment of copper anode slime in sulfuric acid medium is …
The copper telluride raw material from copper anode slime processing used in this study was supplied by Tongling Nonferrous Metals Smelter in China. The dehydration of the raw material was conducted at 120 °C for over 24 h.
Copper Anode Slime Recovery. 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 silver. Smelter of anode slime is most likely divided into two groups by the two different recovery processes based on its property and treatment capacity ...
anodes and 20 cathodes in each cell and a current of 15; amp per square foot is main- tained. The quantity of anode slime formed by the dissolving of these anodes is small and falls to the bottom of the cells, where it is periodically recovered. The dissolving of the nickel anodes follows the same general pattern, the products 139
Abstract Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, Ag, Pt and Pd, in addition to being the main source of rare/energy-critical elements such as Se and Te. There have been various approaches aiming at the development of extraction processes involving thermal and aqueous ...
The anode slime obtained from Indian Copper Complex, Ghatsila was used for the recovery studies with the aim of developing a hydrometallurgical processing route. The chemical analysis of the slime showed that it contained valuable metals like copper, nickel, selenium, tellurium, gold, silver and platinum group metals. Characterisation study by XRD analy¬sis revealed the presence of various ...
Impurities from the copper anode, such as gold, silver, platinum and tin, collect at the bottom of the electrolyte solution, deposited as anode slime. -----More Details On The Impurities Here Ag, Au, tin and Pt are more noble than copper, insoluble in this electrolyte and so do not deposit on the cathode.
Copper anodes from the converter process are dissolved electrolytically using an acid copper sulphate solution as an electrolyte. The products of this operation are pure copper cathodes and an anode slime which Platinum Metals Rev., 1963, 7,(41, may contain gold and small quantities of . get price
Abstract Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, Ag, Pt and Pd, in addition to being the main source of rare/energy-critical elements such as Se and Te. There have been various approaches aiming at the development of extraction processes involving thermal and aqueous ...
Minerals Processing Equipment - English (pdf 2467 kB) - supplies equipment and expertise to customers in: • Ferrous mines and concentrators. • Non - ferrous mines and concentrators. ... Precious metals recovery from anode slime | Outotec Outotec's process solutions recover precious metals from anode slime produced in ...
laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. ... were used for calculating the mass percentage of anode slime in accordance with the mass ... the mechanical processing was used later, as it …
Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as leaching. Electrorefining uses a similar process to remove impurities from a metal. Both processes use electroplating on a large scale and are important techniques for the economical and straightforward purification of non ...
Back to the anode, which may contain a percentage of other values, it often will create a hard, black shell as the silver is transferred. I had a policy of scraping my anode each time I knocked down the crystals. I used a porcelain spatula, cleaning the bottom surface of the anode well, then I'd remove the slimes from the basket using an acid ...
Silver electro-refining is mainly used to treat Dore alloy from copper/lead anode slime and WEEE recycling, mixed silver with crude gold from cyanide gold slime smelting and other silver-bearing scrap and jewelry. Silver ER is performed in FRPP electrolytic cells. Silver anode plate and titanium plate are used as anode and cathode respectively.
Hydrometallurgical Processing of Anode Slimes Obtained from the… 67 Figure 3. The SEM images of the dried and ground anode slime sample produced by an electrolysis of 3h with 1000 A/m2, a)– low magnification, b)– high magnification of the marked area Figure 4. The characteristic EDX spectra of the anode slime produced in 3h with 1000 A/m2
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• 550 kg of anode slime containing 275 kg of Cu, 7.529 kg of Ag and 3.12 kg of Au. • 270 kg impurities (Pb, Sn, Zn, and Fe) distributed in the anode slime and partly in the electrolyte. After the electrolytic refinement of the anodes the obtained slime (550 kg) is to be set copper free to the copper content in the sludge of 2% for the
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extracted from the anode sludge created by the electro-refining process. Copper concentrates often contain precious metals like Au and Ag. Recovery of these metals from anode slime is economically attractive and also it is environmentally. friendly. Temperature plays a critical role on dissolution of gold. from copper anode slime.
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Anode slime is one of the important secondary resources of copper, which is obtained as a by-product during electrolytic refining of copper due to the settling of more noble metals such as gold ...