In some NiCu sulphide ores with low sulphide mineral content, but rich in precious metal levels, processing requires activation rather than depression. Recent work suggests that the ammoniacal solution of copper sulphate is more effective on pentlandite than the copper sulphate itself in the alkaline range [ 54 ].
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The CESL process was originally developed by Cominco (now Teck Resources Limited) for the hydrometallurgical processing of copper sulfide concentrates, as an alternative to smelting, but was also adapted for the processing of nickel sulfide concentrates (Jones, Hestrin, and Moore Citation 1998). The CESL process is a medium temperature pressure ...
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FILE A former iron ore processing plant near Hoyt Lakes, Minn., that would become part of a proposed PolyMet coppernickel mine, is pictured on Feb. 10, 2016. The proposed NewRange Copper Nickel mine in northeastern Minnesota suffered a fresh setback Tuesday, Nov. 28, 2023, when an administrative law judge recommended that state regulators ...
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The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition ...
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In general, the hydrometallurgical process of sulfide ore including the heap leaching 12, acid leaching 13, and ammonia leaching 14,15. However, there are many drawbacks in the treatment of ...
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Department of Mineral Processing and Metallurgy, University of Zambia, Lusaka, Zambia. a. Email: tnoswald b. Email: lwitika . Abstract . Copper is most commonly present in the earth's crust as copperironsulphide and copper sulphide minerals, for example, chalcopyrite (CuFeS 2), bornite (Cu 5FeS 4) and chalcocite (Cu 2S ...
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One solution is to be able to process copper sulphide ores hydrometallurgically. However, it is widely known that sulphide copper ores—and chalcopyrite in particular—have very slow dissolution kinetics in traditional leaching systems. An alternative to improve the extraction of copper from sulphide ores is the use of a pretreatment process.
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The developed copper process could be integrated with nickel refining. Abstract. ... Globally, primary nickel is largely (60 %) produced from sulphide ore deposits (Elias 2002). Pyrometallurgy is mainly (over 90 %) used in the treatment of nickel sulphide concentrates. The nickelcontaining mattes formed are mostly used for the production of ...
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The experimental study on the grinding of two copper sulphide ores using the Magotteaux mill followed by batch flotation of the grinding product in the Magotteaux cell showed that the grinding environment has some influence on electrochemical parameters of the prepared pulp, particle size distributions of solid mass and Cumetal mass in the ...
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For copper sulfide ore, electrolysis is the final stage in the process of pyrometallurgy, in which anode copper slabs are hung in a large tank full of a copperbased electrolyte solution and an electric current is applied, resulting in the plating of copper onto % pure copper cathodes.
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Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered secondary resources or future deposits of copper.
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The acquisition of O'Okiep Copper Company was also completed following the listing of Copper 360. Since listing, construction of the modular flotation plant ("MFP 1") to process sulphide ore has started and remains on track to be completed within budget.
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1. Grindingflotation process: This process is suitable for processing copper minerals with coarse and uniform particle size, loose combination of copper minerals and gangue, and smooth and flat contact, the raw ore is ground to 200 mesh, accounting for 5060%, and the copper minerals can be dissociated as monomers. This flotation process is simple and the cost of beneficiation ...
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The copper sulphide recovery did not decrease when processing the blended ore compared to treating the sulphide ore independently. At a blend of 70% sulphide ore and 30% oxide ore, the rougher scavenger copper recovery was as high as %.
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With declining copper cutoff grades in sulfide or oxidetype ore resources, the mixed sulfideoxide deposits can be considered as an alternative and important source. However, their treatment from the mineral processing perspective is challenging with respect to the complexity of process mineralogy.
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Process mineralogy is an integral part of mineral processing especially in the copper, gold, or silver mining industries where the process of beneficiation determines the difference between economic and uneconomic ventures. ... and Luszczkiewicz, A., 2015, "Flotation of sulfide components of copper ore in the presence of ndodecane ...
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Copper was discovered at the Ore Knob deposit in the northwest part of the state in the early 1850s, and mining began in 1855. The ore is massive sulfide and disseminated ore in mica schist and gneiss, and amphibole schist and gneiss. The principal ore mineral is chalcopyrite, which occurs with pyrrhotite and pyrite. The mine operated until ...
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Metallic sulfide mining — also known as hard rock mining — involves extracting valuable metals, like copper or zinc, from sulfide ores, which are rocks and sediments that contain minerals bonded with sulfur ions. To reach these ores, miners deplete the area's groundwater by pumping it out and then excavate the site using drilling and ...
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Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals from a nickelcopper sulphide ore. 2. Materials and Methods 2. 1. Materials The nickelcopper sulphide ore used in this study was supplied by Trojan Nickel Mine located in Bindura, Zimbabwe.
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processing copper ores and choosing reagents are presented in [57]. The flotation process is most often used for copper sulfide ores due to the good floatability of most sulfides. A flotation flowsheet usually includes a rougher stage and several recleaner stages. For porphyry copper sulfide ores, the Palabora processing plant (South
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The patented intec copper process was developed for the recovery at LME Grade A purity from sulfide concentrates. Essentially, the intec copper process consists of the three sequential circuits: leaching, purification and electrowinning. A simple flow diagram for the intec copper process is shown in Fig. 6. The Cuprex Process
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ore, or to the revenue that would be obtained from the processing of a simple ore having the same grade. Figure 1, from Barbery et al (2), indicates a typical decision tree that summarises the conceptual difficulties in the development of processes for complex sulphide ores, from ores to metals.
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Its metallurgical technologies are primarily concerned with pyrometallurgy and hydrometallurgy. The overall process flowchart of nickel extraction from nickel sulfide ores is shown in Fig. ]. Spraying the deeply dehydrated powder concentrate from the top into the reactor at °C during flash smelting. The advantage of flash smelting ...
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As earlier stated, pyrometallurgical processing of the ore involves the roasting and smelting of the sulfide ore to produce a matte, a mixture of copper, iron, and sulfur. During the smelting ...
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Abstract An analysis of flowsheets for processing sulfide and oxide copper ores, reagent modes, processing equipment, and flotation indicators in some domestic and foreign processing plants and productions is carried out. Autogenous and semiautogenous mills are commonly used in the primary grinding stage in ore processing plants, which excludes medium and fine crushing. The alternative is high ...
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