Vacuum Gasification-Directional Condensation for Separation …
Tellurium is the indispensable base material of semiconductors in solar panels. Traditional tellurium recycling, a highly complicated separation process, has exhausted reagents and energy sources whilst producing waste residue and water containing multitudinous heavy metal that is hugely harmful to the ecological …
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Occurrence Behaviors of As/Sb/Bi in Copper …
The copper-containing solution for removing arsenic, antimony, and bismuth can be returned to the electrolysis process for copper recovery. The proposed process realizes the effectively and environmentally friendly …
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Gold Recovery from Copper Anode Slime By Means of …
PDF | On Mar 1, 2014, R. Ranjbar and others published Gold Recovery from Copper Anode Slime By Means of Magnetite Nanoparticles (MNPs) | Find, read and cite all the research …
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Anode Slimes Treatment: The Boliden Experience
Tellurium and bismuth were separated, and tellurium was enriched from a low content of anode slime raw materials. The recovery rate of tellurium and bismuth were 84.9% and 97.1%, respectively.
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Selective Separation and Recovery of Tellurium from Copper Anode Slime
Tellurium is a critical metalloid element that is majorly produced from copper anode slime and is widely consumed in solar energy systems. In this research, a sustainable recovery of tellurium from copper anode slime obtained from Sarcheshmeh Copper Complex, Iran, was investigated. At first, the dissolution of tellurium and other …
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Detailed characterisation of precious metals and
These are concentrated in the coarsest size fractions and includes corroded fragments of pure copper metal in raw slimes that separated from dissolving anode, sulphates of Ba (baryte, BaSO 4), Pb (anglesite, PbSO 4) and a wide range of other Al-bearing compounds. Complex textures between Al-oxides and baryte result from the use …
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A Review on the Recovery of Noble Metals from Anode Slimes
Anode slimes resulting from the electrorefining of Cu, Pb, Sn, and Zn contain noble metals, such as Au, Ag, and platinum group metals. ... thiosulfate, thiourea, and halide in the presence/absence of oxidizing agents. Separation of noble metals from the solution depends on the nature of the leaching solutions. Solvent extraction, ion …
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Precious Metal Recovery from Anode Slime-Slag/Dross …
Anode slime is a byproduct from copper or lead electro-refining process. The copper/lead anode slime usually contains 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, i.e. pyrometallurgy and ...
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Spectrophotometric determination of gold and palladium in anode slimes …
Determination of Au and Pd in anode slime The anode slime samples were dried at 110 C for 2 h. A 50-100 mg amount of the slime was decomposed with 10-15 ml of aqua regia and the solution was evaporated to dryness. The process was repeated twice. 10-15 ml of a mixture containing 0.4 M NaBr, 0.01 M KSCN and 0.05 M HN03 was added …
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An innovative green process for separating and
After the high- and low-temperature vacuum gasification stages, 96.07% of the Te in lead anode slime was separated and enriched in the volatile phase, and the experimental results are summarized in Table 2. The Te content in the tellurium-rich volatiles was 4.80%, while it was 0.29% in lead anode slime, so it was enriched by more than 16 …
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Optimized Leaching Conditions for Selenium from Sar …
refinery anode slimes. The unit operations used were mainly leaching, liquid-liquid extraction and reduction. The author employs decopperised slimes to extract silver, selenium, tellurium and gold. The decopperised anode slime is first leached with nitric acid at a concentration of about 4 to 9 M and at an elevated temperature between
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Occurrence Behaviors of As/Sb/Bi in Copper Anode …
Occurrence Behaviors of As/Sb/Bi in Copper Anode Slime and Their Separation by Compound Leaching Followed by Stepwise Precipitation. Yanliang Zeng, Chunfa Liao,* …
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Recovery of Silver and Gold from Copper Anode Slimes
Precious metals initially accumulate in the copper phase after smelting, are separated as anode slimes, and then refined through precious metal electrolysis (Chen et al. 2015 ...
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Physico-Chemical Characteristics of Deselenized Copper …
Anode slime is the byproduct generated during the electrorefining of impure copper anode produced in the pyrometallurgical extraction of copper. Copper anode slime generated at the bottom of the electrolytic cell contains many valuable metals, including precious metals and some rare elements. Though the elements present in the anode slime are ...
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Metallurgical Process for Total Recovery of All Constituent
Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, …
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Efficient Separation and Recovery of Tellurium and Copper …
Copper telluride slag is a ubiquitous intermediate by-product produced in the comprehensive recovery of tellurium from copper anode slime. Existing tellurium recovery/treatment processes consist of oxidizing leaching, precipitation, alkaline leaching, and electrolysis, which suffer from excessive consumption and generate high amounts of …
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From waste to wealth: Unlocking the value of copper anode slimes
As a result of this density and size difference between copper anode slime particles and barite particles, getting rid of barite particles will help the downstream separation processes. This approach will result in fewer chemical reagents, water, and overall energy consumption to process raw materials.
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Separation of tellurium and selenium ions from leach liquor …
Tellurium and selenium isotopes have wide applications in nuclear medicine. In this study, extraction of these elements from copper anode slime is carried out by using the hollow fiber renewal liquid membrane technique (HFRLM). At first batch experiments were carried out by using different concentrations of extractants (TBP, DEHPA, Alamin …
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Occurrence Behaviors of As/Sb/Bi in Copper Anode …
copper anode slime. 1. INTRODUCTION China is the world's largest producer of refined copper, producing 10.1867 million tons in 2021.1 Copper anode slime is an important byproduct produced in the copper electrolytic refiningprocess, and its yield accounts for approximately 0.2− 0.8% of refinedcopper production.2 Copper anode slime is rich
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Occurrence Behaviors of As/Sb/Bi in Copper Anode Slime …
1. Introduction. China is the world's largest producer of refined copper, producing 10.1867 million tons in 2021. 1 Copper anode slime is an important byproduct produced in the copper electrolytic refining process, and its yield accounts for approximately 0.2–0.8% of refined copper production. 2 Copper anode slime is rich in Au, Ag, Se, Te, …
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Removal of arsenic, lead and bismuth from copper anode slime …
Semantic Scholar extracted view of "Removal of arsenic, lead and bismuth from copper anode slime by a one-step sustainable vacuum carbothermal reduction process" by Baole Li et al. ... {Baole Li and Juhai Deng and Wenlong Jiang and Guo-zheng Zha and Bin Yang}, journal={Separation and Purification Technology}, year={2022}, …
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Thermodynamic Behavior of As, Pb, and As during the …
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 thermodynamic equilibrium calculations reveal the effects of the temperature, system pressure, and carbon concentration on the interactions among Pb, …
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An Innovative Hydrometallurgical Process for Recovery of
These settle and concentrate in copper anode slimes. Most copper refineries still use conventional pyrometallurgical processes to recover precious metals from copper anode slimes, [1, 2] where it typically takes forty-five (45) days to produce gold and silver ingots from raw anode slimes. In addition to being time-consuming, these operations ...
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Leaching kinetics of selenium from copper anode slimes …
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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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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From waste to wealth: Unlocking the value of copper anode …
This study highlights the challenges associated with recycling and processing secondary materials and demonstrates the complexity of physical separation methods …
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Physico-Chemical Characteristics of Deselenized Copper …
Anode slime is the byproduct generated during the electrorefining of impure copper anode produced in the pyrometallurgical extraction of copper. Copper anode slime generated at …
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Tellurium, from Copper Anode Slime to High Purity …
Ag, Se, Te The Se content of the copper anode can reach up to 0.3 wt pct; however, concentrations above 0.1 wt pct are irregular. [24] It has been reported that most of the Se in the anode ...
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From waste to wealth: Unlocking the value of copper anode slimes
Copper anode slime is a by-product of copper cathode production, and it is well-known as a source of precious metals (e.g. Gold, Silver, Palladium, ... and prior to the size and gravity separation of barite from precious anode slime particles, sieve analysis was done to achieve the particle size distribution. In order to determine particle size ...
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Separation of Sn, Sb, Bi, and Cu from Tin Anode …
Tin anode slime is a by-product of the tin electrolytic refining process. This study investigated a route to separate Sn, Sb, Bi, and Cu from tin anode slime after leaching with hydrochloric acid. In the solvent …
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