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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 ...
The aim of this study was to realize gold leaching from copper anode slime (CAS) with ionic liquid treatment. A novel medium, 1-butyl -3-methyl-imidazolium chloride (BmimCl), was used as the ...
perized anode slime, it was found that Pb has some deleter- ious effects on the dissolution of gold and silver and increase the consumption of thiosulfate (Xu et al. 2016 ).
treatment capacity of 110,000 tons. Increasing the amount of E-scrap treated, however, has raised impurities in copper anode. Electrorefining of anode with high impurities degrades quality of electrolytic copper and increases the load on slime leaching process.
A clean and eco-friendly vacuum distillation-directional condensation treatment was investigated for its potential to recycle tellurium from tellurium-rich lead anode slime (TLAS). The optimal ...
The Treatment of Copper Refinery Anode Slimes. W. Charles Cooper. There are numerous viable approaches to nium is volatilized as e0 2 an passes tent. As an initial step, the …
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 hydrometallurgy.
Read this article. Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains …
Roasting: Na 2 CO 3 /copper anode slime: 0.1, 500 °C, 0.5 h; Alkaline leaching: 20 g/L NaOH, 80 °C, 1.0 h; Acid leaching: 90 g/L H 2 SO 4 70 °C, 1.0 h. 97% …
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 proper recovery method strongly depends on the slimes composition, mineralogy, and tellurium concentration. In addition, correctly selecting the right method of leaching, purification, …
Copper anode slime (CAS) is an important component of secondary resources, and it contains a large amount of SPMs. ... The LAS, a significant secondary resource, has been the main raw material for refining Ag, Au, and Te. The treatment and utilization of LAS are conducive to solving the gradual depletion of non-ferrous metal-rich …
The existing slime treatment plant was completely reconstructed in 1969·and through the years expanded its precious metals and by-products production. ... Product Dore anode 98.0 tr. 0.3 0.1 tr. 0.7 Slag 3.9 10.6 12.5 36.6 1.8 8.7 Soda slag 4.1 5.6 9.4 20.5 15.6 12.4 tr.: <: 0.01 This furnace had served SMM's slime treatment plant well and ...
Section snippets Materials. The copper anode slime used in the experiments was provided by one of the copper smelters in China. Before experiments, the original copper anode slime was washed with hot water of 80 °C and then sieved with 100 mesh sieve to remove large particle.And then slurry was vacuum filtered and dried at 120 …
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, …
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 …
The SDR with high contents of silver and gold, produced by vacuum distillation of crude selenium recovered from copper anode slime treatment process in the copper smelter, was employed as the raw material. First, it was crushed, grounded, and screened to obtain the desired particle size (200–300 mesh), and dried at 90 °C for 24 h …
The treatment of anode slime increased 473t ÷ 5,900t ≈ 8% indicates that the reduction of fixed cost for treatment of copper anode slime is around 8%. The treatment cost of copper anode slime for the PM plant is RMB12,000 per ton, including controllable cost of around RMB7,500 per ton and fixed cost of around RMB4,500 per …
Copper anode slime was obtained from Jiangxi Copper Corporation Guixi Smelter in southern China and was used in the experiments as received after drying. From the analysis of the XRD pattern of the residue shown in Fig. 1, it can be clearly seen that the physical phases of copper anode slime are relatively complex, and the main phases …
Anode Slime. Selenium Dioxide. Screw Conveyor. There are numerous approaches to the treatment of both copper and lead anode slimes. Although the chemistry and metallurgy has been described and discussed by many authors, few, if any, have described the environmental impact of these activities. Dust and especially selenium emissions are a …
Most promising is a direct furnace treatment of decopperized and detellurized slimes, in which selenium is volatilized as the dioxide, impurities such as lead are slagged off, and a high-quality doré metal is obtained. Download to read the full article text.
This indicates that after the calcination treatment, the structure of the anode slime is changed, which facilitates the leaching of lead. Wei et al. (2017) adopted a method of leaching manganese and retaining lead. By using the electrolytic manganese anode slime as the oxidizing agent and glucose as a reducing agent, the manganese in the …
Anode slime is the insoluble product deposited at the bottom of the electrorefining tank at the time of electrorefining of copper. ... Of particular importance to the slime treatment is a knowledge of various phases present in the slime, which has direct bearing on the processing steps and reagents to be used for attacking different phases 113 ...
The slime formation in acidic electrolytes of copper with several metallic impurities has been studied. On Pb-Ca-Sn anode surface firstly the formation of PbSO4 takes place, then, it is ...
Anode slime is produced during the electrorefining of impure copper anodes to produce pure copper cathodes. 26, 27 The insoluble impurities of the copper anodes are collected at the bottom of the ...
Considering this factor, the research team integrated and innovated a semiwet treatment anode slime process, specifically "mixed acid leaching of As, Sb, and Bi—separation of Cu by sulfated roasting followed by water leaching—sodium hydroxide leaching of Te—recovery and separation of Au and Ag". However, there are still some …
Preventing lead-based anodes from causing high-energy consumption, lead pollution, and harmful anode slime emission is a major challenge for the current electrolytic manganese metal industry. In this work, a Ti4O7-coated titanium electrode was used as anode material (Ti/Ti4O7 anode) in manganese electrowinning process for the first time …
After electrolysis, the surface of the AC2A casting alloy anode (Fig. 3a) became a black anode slime (Fig. 3b), whereas cake-like aluminium was deposited on the cathode (Fig. 3c).