Chalcopyrite is of great economic importance since approximately 70% of global copper reserves are present in this mineral [].Traditionally, the main technology for copper extraction from its ores and concentrates was pyrometallurgy, but the gradual depletion of rich ore deposits and growing environmental concerns over pyrometallurgical …
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Current density for NaCl–KCl system calculated by dividing average operating current by reported sample surface area [45]. Management of iron, sulfur, and impurities Current density determines the rate of metal production at the cathode, but for chalcopyrite, it is important to focus on the liberation and collection of the other …
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The predominant copper-bearing mineral was chalcopyrite, which was closely intergrown with orthoclase and muscovite rather than quartz. The flotation tailings sample still contained 3.28wt% liberated chalcopyrite and 3.13wt% liberated bornite because of their extremely fine granularity.
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In this work, the interactions between one sample of silver-bearing tailing (223g/t silver) and chalcopyrite during bioleaching by mixed moderately thermophilic culture were investigated. Bioleaching results showed that copper can be almost totally extracted from chalcopyrite as the result of addition of the silver-bearing tailing, and silver (Ag) …
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To assess the influence of minor amounts of impurities on the thermal stability of chalcopyrite, we repeated the above experiment with a chalcopyrite sample containing 1.2 at% bornite (49.50 at% S used in the reactant mixture). Here, the chalcopyrite phase transition started already at 475 °C and was completed at 540 °C.
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Mine tailing and fly ash (FA) content was tested at 40%, 50%, and 60% of total paste volume, and tailing pastes were produced at w/b ratios of 0.12, 0.16, and 0.2.
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Partial seawater desalination treatment for improving chalcopyrite floatability and tailing flocculation with clay content. Author links open overlay panel Constanza Cruz a b, Jahir Ramos a, Pedro Robles c, ... First, a synthetic ore sample of 950 g was ground using a stainless steel laboratory ball with 0.5 L and a frother for 18 min. The ...
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The results in Table 1 indicate that the natural enargite sample contained trace amount of impurities such as Fe and Zn. The purity of the natural enargite sample was assumed over 98%. Synthetic chalcopyrite (CuFeS 2) was prepared by reacting pure copper (99.99%), iron (99.9%) and sulfur powders (99.999%) at the stoichiometric ratio in …
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In this work, the interactions between one sample of silver-bearing tailing (223 g/t silver) and chalcopyrite during bioleaching by mixed moderately thermophilic culture were investigated. Bioleaching results showed that copper can be almost totally extracted from chalcopyrite as the result of addition of the silver-bearing tailing, and silver (Ag) …
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This study presents the novel idea of a cyanide-free leaching method, i.e., glycine-ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing. Ammonia played a key role as a pH modifier, lixiviant and potential catalyst (as cupric ammine) in this study. Replacing ammonia with other pH …
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The purity of the chalcopyrite sample was slightly lower with about 95% chalcopyrite and 5% pyrite. To be consistent with previous studies, ... Fig. 12 shows S 2p XPS spectra of flotation tailing with 96% pyrite and 4% chalcopyrite. Due to the predominant pyrite composition, the XPS spectra illustrate the surface property of pyrite …
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Research on chalcopyrite leaching represents a great challenge, given its importance as one of the most abundant copper minerals and its significant role in global …
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The chalcopyrite concentrate sample was crushed, ground below 200 mesh (74 µm), and then a chemical analysis of the sample was carried out. The tri-chloro-ethylene (C 2 HCl 3) (TCE) used as a surfactant was obtained from Merk, Germany. Double distilled water was used throughout the experimental work. All the chemicals used in this …
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research, a depth sampling was conducted over the tailings materials. Two vertical trenches (A and B) were excavated in tailings from the surface to a depth of 4.2 m. ...
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The complex mineralogy of Sossego DAM copper tailing leads to the necessity to grind the rougher magnetite pellet feed to a P80 of 20 µm to liberate of magnetite and allow to produce a high ...
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chalcopyrite tailing sampling. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals. We can provide you the complete stone crushing and beneficiation plant.We also supply stand-alone ...
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A chalcopyrite (CuFeS2) ore, assaying about 1.5% Cu, must be routinely sampled for assay to a desired sampling accuracy of +0.02% Cu, a certainty of 0.99% (2.576 standard deviation). The CuFeS2 is essentially liberated from quartz gangue. The top size of the ore after crushing is 1.5 cm whilst the grain size of CuFeS2 is 0.01 cm.
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Content of CP/PY in tailing in case of the low pyritic feed is high, which plunges in higher pyritic feed. Consequently, it can be asserted that there is a massive mass transfer of CP/PY particles to the concentrate with regard to processing the high pyritic ore type. Furthermore, free chalcopyrite content of the feed also decreases.
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dominant copper-bearing mineral was chalcopyrite, which was closely intergrown with orthoclase and muscovite rather than quartz. The flota-tion tailings sample still contained 3.28wt% liberated chalcopyrite and 3.13wt% liberated …
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The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
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1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and removed, while ...
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The exploited minerals were scheelite for W, chalcopyrite for Cu and fluorite, and their respective concentrates were produced in three main sections of the Yxsjö …
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pond inside.The tailing ore sample for this study was collected from Yangla Copper Deposit in Yunnan, China. The cores of Yangla Copper Deposit mainly contains
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The elevated Fe content in the slag tailing is attributed to the presence of bornite (FeCu 5 S 4) and chalcopyrite (CuFeS 2) in the Cu concentrate . Silica content in the slag tailing originates from both the primary ore and the added silica flux during the smelting process [ 33 ].
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The sample tailing comprising sulfide and oxide complexes used in this study was obtained from a tailing dam situated on southern Democratic Republic of Congo. ... Agglomeration-flotation of finely ground chalcopyrite and quartz: effects of agitation strength during agglomeration using emulsified oil on chalcopyrite. Minerals, 10 (4) …
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The XPS spectra of chalcopyrite surface with and without Tween-20 treatment are shown in Fig. 7. In the case of the control (without Tween-20), the Cu 2p 3/2 peak of 932.30 eV (without satellite ...
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Panasqueira was chosen by the consortium to be an e-EcoRisk test site due to several factors: (a) it is an active mine; (b) there are huge tailings piles and dams; the Rio tailings (≈1,200,000 m 3) has one mud dam (≈731,034 m 3) and the Barroca Grande (≈7,000,000 m 3) has two mud dams (≈1,193,885 m 3); (c) small villages, S. Jorge da …
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In this paper, a copper tailing was studied through the chemical analysis method, X-ray diffraction and scanning electron microscope-energy dispersive spectrum. …
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Magnetite pellet feed recovery from chalcopyrite dam copper flotation tailings. Process route comprises scalping screen, low field rougher, and cleaner magnetic separations …
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The results obtained determined that the dissolution of a stationary chalcopyrite sample was controlled by diffusion in the reaction product layer at pH 3 and changing to chemical rate control at pH 1. The FeOOH formation in addition to the elemental sulphur favours chalcopyrite dissolution. Al-Harahsheh (2008) used ferric chloride …
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