— The main difference between the secondary copper electrolytic refining slime and the primary copper electrolysis slime is the reduced contents of selenium and tellurium by about 10–100 times and the tin content in the slime is an order of magnitude higher. The study object contains 24.94% PbSO 4, 19.97% SnO 2, and 13.13% BaSO 4.
— 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 …
Mopani Copper Mines PLC is Zambian-registered integrated mining investment with operations in Kitwe and Mufulira districts of the Copperbelt Province in the Republic of Zambia. The company's operations …
Mopani Copper Mines PLC has since 2014 sunk and equipped three (3) brand new shafts to replace the old infrastructure at both Nkana and Mufulira mine sites, which dates back to the 1930s. The three new …
This paper describes the equipment, technologies and new operational practices that constitute the Mufulira Refinery Upgrade Project. All activities have been progressively …
THE HEART OF THE MINE Mopani Copper Mines PLC owns the Mufulira ISA Smelter, where concentrates coming from Mufulira and Nkana Concentrators are blended with Toll concentrates from other sources to produce Copper Anodes containing 99.6 percent copper. The Upgraded Smelter is equipped with two acid plants, which capture up to 95 …
ANODE SLIME GAINED DURING ELECTROLYTIC REFINING PROCESS OF SECONDARY COPPER ANODES . Nurten Deva 1, Musa Rizaj, Ismail Duman2, Florian Kongoli3 . 1 University of Prishtina, Faculty of Mining and ...
— Copper anode slimes, produced from copper electrolytic refining, are important industrial by-products containing several valuable metals, particularly silver and gold.
— 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 are associated with high-energy consumption and ...
— Because of the addition of copper sludge, copper cables, waste printed circuit boards, and other types of recycled copper to the copper smelting process, the anode slime is rich in tin (Sn), manganese (Mn), arsenic (As), lead (Pb), and other heavy metals, causes the composition of anode slime to fluctuate greatly (Li et al., 2020; Markovic et ...
pressure at 70–85 °C. Oxygen in the air reacts with copper and copper compounds to dissolve copper according to Reactions (1)–(4). The copper content remaining in the residue after leaching for 18–24 h is less than 1%. Anode Slime Decopperizing Leaching Solution Decopperized Slime Detellurizing Wet Chlorination Silver Chloride Copper ...
— High-selenium copper refinery anode slimes form two separate and dynamically evolving series of compounds with increasing electrolysis time. In one, silver is progressively added to non-stoichiometric copper selenides, both those originally present in the anode and those formed subsequently in the slime layer, and in the other, silver-poor …
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 two different …
— In a significant development for Zambia's mining sector, the government has announced plans to hand over Mopani Copper Mines to a new investor by the end of February 2024. Finance and National ...
— The transformation of selenium-containing phases in copper anode slimes during the leaching process was investigated based on the Eh–pH diagram, leaching efficiencies of metals, and characterization of the residues produced during leaching. The leaching efficiency of selenium increases slowly to 17.7% in the first 50 min and then …
— Bard GN and Sobral LGS. 2008. Extraction of gold, silver and copper from the copper electrorefining anode slime: separation of the metals, Global Symposium on Recycling, Waste Treatment and Clean Technology, October …
— Pure copper is plated onto the mother stainless-steel cathode and soluble impurities dissolve in the electrolyte. Impurity elements (Au, Ag, Bi, As, Sb, Sn, Pb, Te, …
type of ore [1]. 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
— 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, …
Mopani Copper Mines PLC's Refinery has the capacity to produce 220,000 tonnes of copper cathode per annum. At the Refinery, copper anodes coming from the Smelter are electro-refined to produce cathodes with …
The copper anode slime produced in one copper smelter domestically was pre-treated with pressure acid leaching method and the leaching behavior of copper,tellurium and selenium in copper anode slime was studied.The results show that this method can attain thorough removal of copper and part removal of tellurium and selenium and the silver is still not …
— Nippon Mining Co. Ltd. developed a H 2 SO 4 leaching process in which anode slimes were kept in a 15 wt.% H 2 SO 4 solution and reacted with O 2 in the presence of sodium nitrite.37 Autoclave leaching with O 2-H 2 SO 4 media was also used for treating the copper anode slimes of La Caridad Copper Refinery by Chen et al.3,38 …
— The proposed procedure for the treatment of copper anode slime to recover both copper and selenium is summarized in Fig. 3. The dissolution conditions of copper and selenium were optimized according to the characterization results of samples taken before and after each dissolution steps. Download: Download full-size image; Fig. 3.
Gravity separation has long been a cost-effective method for the mining industry, especially in the processing of precious metals. ... Copper anode slime contains significant amounts of gold, silver, and platinum group metals. In this study, we tested the functionality of a slime shaking table for recovering precious metal components by ...
— 1. Introduction. Copper anode slime is the byproduct of electro-refining of copper, which often contains precious metals and is a valuable secondary resource for recovering valuable products, such as silver, from it (Ding et al., 2017, Wang et al., 2017, Yldrm et al., 2014).The predominant method for silver recovery from anode slime is …
— Copper anode slimes, produced from copper electrolytic refining, are impor-tant industrial by-products containing several valuable metals, particularly silver and gold. This article provides a comprehensive overview of the devel-opment of the extraction processes for recovering silver and gold from con-ventional copper anode slimes.
— This is exemplified by the fact that copper anode slimes derived from concentrates sourced from magmatic sulfide and VMS orebodies have an order of magnitude higher tellurium concentrations than ...
Mopani Copper Mines has completed producing the first 200 tonnes of Copper Annodes since President Hakainde Hichilema handed over the company to the new equity partner …
— Its copper deposits have been mined over many years, with Mopani owning the Mufulira smelter, where concentrates are blended with toll concentrates to produce copper anodes containing 99.6% copper. Jubilee, which has developed metal extraction solutions from waste and overlooked materials, has already secured 300-million tonnes …
— The copper anode slime, a byproduct of the copper electro-refining process, is a 38 valuable secondary resource containing valuable elements such as Cu, Se, Sb, Ag, Au
— Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, …
— In this paper, the hydrometallurgical method of recovering Au, Ag, Pt, Pd, Se, and Te is reviewed with copper anode slime (CAS) as an example. At present, more …
— Four companies have been shortlisted to acquire the Mopani Copper Mines (MCM) in Zambia, reported Reuters, citing two sources. The entities involved comprise China's Zijin Mining, South Africa's Sibanye …
— While the copper mining process is not optimized for byproduct recovery, as indicated by the high tellurium loss rate (90%), anode slimes treatment can be highly efficient and is usually optimized ...
