Synergistic mechanism and decopperization kinetics for copper anode
— The composition of copper in copper anode slime is complex. Therefore, the phase analysis of copper in CAS was carried out to determine the content of different forms of copper compounds. Through phase analysis and previous research [26], [27], the proportion of CuSO 4, CuO, and CuS in total copper content are 47.68%, 2.4%, and …
Extraction of platinum and gold from copper anode slimes …
— 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
Metallurgical Process for Total Recovery of All Constituent Metals …
— 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 …
Selenium minerals and the recovery of selenium from …
recovering selenium from copper anode slimes are summarized.;9# 53*2 selenium, selenium minerals, anode slimes. * School of Mining Engineering, University of the Witwatersrand, Johannesburg, South ...
Jubilee Metals awards new slag project with Mopani Copper Mines …
— 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 …
Recovery of Silver and Gold from Copper Anode Slimes
— Copper anode slimes, produced from copper electrolytic refining, are important industrial by-products containing several valuable metals, particularly silver and gold.
Tellurium, from Copper Anode Slime to High Purity …
— 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 ...
An environmentally friendly process to selectively recover …
— 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 …
ANODE SLIME GAINED DURING ELECTROLYTIC …
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 Refinery Modernisation, Mopani Copper Mines …
This paper describes the equipment, technologies and new operational practices that constitute the Mufulira Refinery Upgrade Project. All activities have been progressively …
Selenium and Tellurium from Copper Refinery Slimes and …
— 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 ...
Technological Mineralogy of Copper Anode Slime
Abstract: In order to improve the technology of extracting noble metals from the copper anode slime, the technological mineralogy investigation of the anode slime was studied by XRD, SEM and optical microscope. The results showed that the particle size in the anode slime which was less than 38μm accounted for 7853%, the particle size ranged from …
An Innovative Hydrometallurgical Process for Recovery of …
— 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 ...
An investigation of copper and selenium recovery from copper anode slimes
Journal of the Southern African Institute of Mining and Metallurgy. Extraction of copper and gold from anode slime of Sarcheshmeh Copper Complex. 2016 • ... Copper anode slimes from electrolytic copper refineries are now supplying the source of most of the world's selenium due to its significant contents considering high costs and technical ...
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 …
Four companies compete to acquire Mopani …
— 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 …
Mineralogical Characterization of Anode Slimes: Part …
— The silica gel commonly impregnates both the copper sulphate and the oxidate matrix phase; its stabilizing effect on copper sulphate likely contributes to anode passivation. Most of the silicate inclusions in the copper anodes, however, are not significantly leached and simply accumulate in the anode slimes.
Electrometallurgy of copper refinery anode slimes
— 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 …
The Technological Research on Pre-treating Copper Anode Slime …
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 …
Extraction of platinum and gold from copper anode …
The copper anode slime used in this work was obtained from a copper smelter located in Yunnan province of China. As presented in Table 1, the major elements contained in this slime were Cu, Sn, Sb, Ag, As, S, O, and Te, and the contents of Pt and Au were 93.76 g/t and 1812.15 g/t respectively. Fig.1 shows that this copper anode slime was
Recovery of Silver and Gold from Copper Anode Slimes
— 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 …
Smelter
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 …
Zambia : Government to Hand Over Mopani and Konkola Copper Mines …
— 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 ...
Comprehensive recoveries of selenium, copper, gold, silver …
— 5, 6 Copper anode slimes are regarded as refractory gold sources due to their ultra-fine gold particles ... Gravity separation has long been a cost-effective method for the mining industry ...
Unique Hydrometallurgical Process for Copper-Anode …
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 ...
About Us
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 …
Smelter
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 …
Tellurium, from Copper Anode Slime to High Purity …
— 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 : Placing Prosperity in Zambian Hands …
For over 10,000 years, mankind has worked with copper. In early civilisation, copper found usage as the only metal known to man for over five millennia. Fast forward centuries, and the prevalence and usefulness of the metal has not waned. In the landscape of south-central Africa, copper resources find their heartland in t…
Collective Recovery of Copper and Silver from Secondary Copper …
— 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.
Electrometallurgy of copper refinery anode slimes
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 copper selenides …
Unique Hydrometallurgical Process for Copper-Anode Slime …
— Saganoseki Smelter and Refinery started operation of its copper anode slimes treatment plant using a hydrometallurgical process—the first of its kind in Japan—in 1997 (Toraiwa et al. []).The adoption of this process yielded many operational advantages including higher product quality, higher productivity, shorter gold -retention time, and …
Characteristics of anode slime obtained from secondary copper anodes
— This slime is a by-product of copper electroforming, in which a copper anode with a purity of 98.5 wt.% Cu is electrochemically dissolved and extracted with a purity of 99.99% wt.% Cu.
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, …
Characterisation andLeaching ofCopper Refinery …
The_constitution of copper refinery anode slimes has been studied using D. C. arc spectography.. atomic absorption analysis, X-ray diffraction, scanning electron microscopy, energy dispersive X ...