Mechanism and kinetics of synergistic decopperization from copper anode …
Copper anode slime is a typical hazardous waste that is rich in precious metals, rare metals and other valuable metals. Decopperization is the first step to recycle rare and precious metals from copper anode slime. In this work, the synergistic effect of ultrasound and ozone on copper leaching from copper anode slime was studied to …
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Comparison of Life Cycle Environmental Impact between …
Copper anode slime is a by-product of crude copper electrorefining, ... The annual output of copper anode slime in China is about 71,100 tons, ... With unchanged existing equipment and fine-tuning of the technology process flow, the direct material cost per ton of gold slag dropped from 1654.04 yuan to 802.90 yuan—a decrease of over 50% ...
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Leaching behavior of metals from copper anode slime …
A single batch of copper anode slime used in all the experiments was collected from Daye Nonferrous Metal Co., Ltd., Hubei Province, China. It is typical of high lead and low nickel content, ground to − 100 mesh after drying at 110 °C for 24 h. Table 1 shows the quantitative chemical assays of the sample.
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Tellurium, from Copper Anode Slime to High Purity …
Mohammad Mokmeli & Fereshteh Rashchi. Metallurgical and Materials Transactions B 51, 2555–2575 ( 2020) Cite this article. 1807 Accesses. 15 Citations. …
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Selective separation and recovery of selenium from copper anode slime
The copper anode slime leaching experiments were conducted in 250 mL round-bottom flasks. The reaction solution was prepared according to a certain ratio of H 2 SO 4, HCl and NaCl, and the copper anode slime is added to the reaction solution according to a certain liquid–solid ratio. The temperature was set and controlled by a …
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Research on Separation and Extraction of Valuable Metals
However, with the increasing complexity in composition of anode slime and increasing environmental pressure, mineral processing and roasting pretreatment have been phased out due to the shortcomings of low recovery rate, severe equipment corrosion, unfriendly environment and high cost. Therefore, scientific research is focusing more on …
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Thermodynamic Behavior of As, Pb, and As during the …
Medium-scale copper smelter in western China [10] 5.36 0.16 2.38 28.65 3.86 ... method has advantages such as equipment processing capacity, short operation time, less metal backlog, low energy consumption, small amount of flue gas, and good operating ... Copper anode slime was kindly provided by a copper smelter in Yunnan, …
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Selective separation of base metals and high-efficiency …
The scrap copper anode slime was obtained from a recycled metal smelting enterprise in Jiangxi, China. The dried SCAS sample with a particle size of 100 % below 74 μm was used for subsequent experiments. Nitrogen and oxygen applied to the roasting tests had a purity higher than 99.99 vol%.
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Processing of copper electrorefining anode slime
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 ...
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Migration regularity and control of silver inclusions during copper …
The entrainment of floating anode slime formed by As, Sb and Bi is the key factor for the inclusions of AgCl and Ag colloidal particles in cathode copper. Sb 2 O 3 is adopted to purify the copper electrolyte and reduce the floating anode slime, thus effectively inhibiting the inclusions of AgCl and Ag colloidal particles. Under the optimized ...
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Recycling of copper telluride from copper anode slime processing
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.
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Processing of Complex Materials in the Copper Industry
A global copper mine-by-mine review undertaken by ICSG found that the global average copper ore grade was as low as 0.45% copper in reported reserves and only 0.65% copper in 2015 copper mine production. Global weighted average of copper concentrate output in a large sample of plants was around 25% copper in 2015 data.
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(PDF) Metallurgical Process for Total Recovery of All …
Copper anode slime processing has a history of being in a devel- opment period, though at times showing overlaps. ... the equipment have become the main issues in the • The above reactions exhibit slow kinetics at ambient application of this technology conditions; thus, a critical condition is required (temperature of 200 °C, oxygen partial ...
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Metallurgical Process for Total Recovery of All
Copper anode slime processing has a history of being in a development period, though at times showing overlaps. The discussion of each metallurgical process is basically explained by thermodynamic ...
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Thermodynamic Behavior of As, Pb, and As during …
The use of copper anode slime (CAS) for the removal of lead, bismuth, and arsenic is the key to recovering precious metals. In this paper, vacuum differential gravimetry experiments combined with …
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Selection of reductants for extracting selenium and …
In this research, selenium was selectively separated and recovered from copper anode slime by a hydrometallurgical-pyrometallurgy union process. In the first compound leaching process with H 2 SO 4, HCl and NaCl media, the pre-removal of As, Sb, and Bi was achieved, and the removal efficiencies were 85 %, 83 %, and 91 %, …
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Copper Anode Slime
Copper Anode Slime. Anode slime is a byproduct of copper or lead electro-refining process and found in electrolytic cell bottom or on the anode scrap surface. The copper anode slime and lead anode slime usually contain precious metals like gold and silver. Depending on the treatment capacity, process of anode slime recovery is achieved by …
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Processing of copper electrorefining anode slime: a …
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, …
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Recovery of Silver and Gold from Copper Anode Slimes
The combination of flotation and metallurgical processing to treat copper anode slime produces approximately 1400 tons of flotation tailings every year in Yunnan Province. These tailings contain a ...
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A modified sulfation-roasting-leaching process for …
A single batch of copper anode slimes from Sarcheshmeh Copper Company, Iran, was used to perform all the experiments in this research. First, the copper anode slimes were dried in an oven at 100 °C for 24 h. The dried slimes were ground to 38–75 μm. Characterizations of the head sample. Fig. 5 illustrates the XRD pattern of the slimes …
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(PDF) Selenium minerals and the recovery of selenium from copper …
removal technique from copper anode slime. ... recovery from copper ore processing has been discussed. ... geological ages are obtained from 25 coal mines in China. The contents of Hg, Pb, Cd, Cr ...
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From waste to wealth: Unlocking the value of copper anode …
Sarcheshmeh copper complex (NICICO) is one of the most important copper mining and metallurgical complexes globally and is undoubtedly the most important one in Kerman, Iran (Dehghanpoor et al., 2016). 10 kg of copper anode slime was delivered to the mineral processing laboratory of the Amirkabir University of Technology for physical ...
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The treatment of copper refinery anode slimes | JOM
There are numerous viable approaches to the treatment of anode slimes from electrolytic copper refining. Of particular interest in the treatment of slimes are the behavior and recovery of selenium. The understanding of the process chemistry involved in the treatment of anode slimes should be aided considerably by recent work on the formation and …
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Integrated process for recycling copper anode slime …
The copper anode slime was obtained from a factory which is located in southern of China. Before the experiment, H 2 SO 4 solution was used to remove …
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IJERPH | Free Full-Text | Comparison of Life Cycle …
The annual output of copper anode slime in China is about 71,100 tons, which is an important source of metallic silver production. With the rapid increase in China's copper and other non-ferrous metals production [ 7 ], the extraction of silver and other precious metals from anode slimes will have increasingly important economic and ...
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A Review on the Recovery of Noble Metals from Anode Slimes
the Recovery of Noble Metals from Anode Slimes, Mineral Processing and Extractive Metallurgy Review, DOI: 10.1080/08827508.2019.1575211 To link to this article: https://doi.or g/10.1080/08827508. ...
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Recovery of scattered and precious metals from copper anode slime …
Copper anode slime (CAS) is an important component of secondary resources, and it contains a large amount of SPMs. ... This work was supported by the National Key Research and Development Program of China (No. 2018YFC1903104, 2018YFC1903603). Recommended articles ... especially in the processing of precious …
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A novel process for extracting tellurium from the calcine of copper …
Copper anode slime is an important source for extracting tellurium. In this study, a novel process for extracting tellurium from the calcine of copper anode slime via continuous enrichment is proposed. First, tellurium in the calcine of copper anode slime is enriched in the replacement residue by oxidative leaching and replacement with …
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Recycling | Free Full-Text | Primary Copper Smelter and …
The refinery production of copper in 2015 was estimated to be 22.9 million tonnes [].In 2014, the refinery production was 22.2 Mt, of which approximately 14.2 Mt was primary electrorefined and fire-refined and 4.1 Mt electrowon, and secondary production was 3.9 Mt [].Based on U.S. Geological Survey (USGS) dataseries [] during 1990–2011, the …
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An environmentally-friendly method to recover silver, copper …
The raw of copper anode slime material used in the present work was provided by a non-ferrous metal smelter from Yunnan Province in China. First, it was dried at 100 °C for 24 h, and then ground to an average particle size of 150 μm for the carbothermic reduction and super-gravity separation experiments.
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