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Flotation separation of chalcopyrite and molybdenite is an enormous challenge faced by mineral processing, since chalcopyrite is usually closely associated with molybdenite in porphyry copper-molybdenum deposits. ... Effect of H 2 O 2 and potassium amyl xanthate on separation of enargite and tennantite from chalcopyrite and …
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In the chemical leaching process, the low rest potential minerals like bornite will be preferentially dissolved while pyrite will be protected as the cathode and the quality of pyrite is not significantly reduced, so it can be considered to act as catalysts (Ahmadi et al., 2012, Koleini et al., 2010). The addition of pyrite can significantly ...
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The findings contribute to a deeper understanding of mineral processing challenges and offer valuable insights for future exploration and ore processing strategies. ... C12, C13, C15, and C16, chalcopyrite is the leading copper mineral (78.6%), followed by chalcocite (15.1%) and bornite. The other minerals are present in less than (1.3%) of …
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In this paper, the effect of sodium butyl xanthate (NaBX) adsorption on the surface of bornite at different pH on flotation was studied by adsorption kinetic and thermodynamic. The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution (4×10−5 mol/L). ... International Journal of Mineral …
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Solid-state diffusion is a very slow process in most minerals at low temperatures, but rapid cation diffusion in bornite-digenite solid solution and copper-sulfides has been reported (Grguric and Putnis, 1999, Mayer et al., 2011), and was attributed to the crystal structure of these phases (Grguric and Putnis, 1999). We …
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The use of various electrochemical techniques to study mechanisms of sulfide mineral-flotation reagent interactions is briefly reviewed in this paper. Prior to such studies it is desirable to thermodynamically determine solution conditions favorable for formation of hydrophobic species deemed to be responsible for flotation. The thermodynamic …
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The paper presents a study of the process of nitric acid dissolution of the natural minerals chalcopyrite and bornite. The influence of various parameters, including temperature, nitric acid ...
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This review mainly summarizes previous and recent studies on bornite (bio)leaching. Chemical and biological dissolution of bornite, the influence of associated minerals on bornite leaching, the intermediate transformation, and possible surface layers in the leaching process were further discussed. The addition of bacteria significantly …
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Hydrometallurgy and biohydrometallurgy are considered as important mineral processing techniques in processing low grade ores as it is simple, low cost, and eco-friendly, but most studies focused on chalcopyrite [5,6,7] and few reports about bornite bioleaching have been published. As a secondary copper sulfide, bornite is an …
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2. A steam in a mineral processing plant is found to comprise 10.05% bornite and 20.12 % chalcopyrite and an unknown amount of pyrite. Assuming these are the only Cu-bearing and Fe- bearing mineral, calculate i. The Cu assay (%Cu). (2 mark) ii. The assay of pyrite if the total Fe assay is 24.34%. (4 marks) Give answer to 2 decimal places.
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Chalcopyrite, CuFeS 2, is an important source of copper and is recovered from ore by the flotation process. Chalcopyrite is commonly associated with other metal sulfides, e.g. bornite, Cu 5 FeS 4.In this study the effect of bornite on the oxidation and leaching of chalcopyrite has been investigated by probing the surface evolution of pure …
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Request PDF | A review on bornite (bio)leaching | (Bio)Hydrometallurgy is a common technology in processing copper sulfide minerals. With the decline in ore grades and depletion of easily mined ...
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focus on (1)interficial interactions of metal sulfide mineral bioleaching; (2) rutile flotaion&metallurgy; (3) bioleaching industrial application
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The mineral system characteristics of the Sudbury Ni-Cu-Co-PGE sulfide ore deposits. Peter C. Lightfoot, in Nickel Sulfide Ores and Impact Melts, 2017 The principal Cu-Fe-S minerals. The principal Cu-Fe-S minerals are chalcopyrite, cubanite, and bornite (Table 4.2).Chalcopyrite accounts for by far the major part of the Cu in the Sudbury deposits.
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Electrochemical analysis indicated that the dissolution of bornite was an acid-consuming process. The results of XRD showed that intermediate species, namely covellite (CuS), mooihoekit (Cu9Fe9S16) and isocubanite (CuFe2S3), were formed during bornite bioleaching, and a mass of elemental sulfur was formed in the late stage of bioleaching.
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In this work, density functional theory (DFT) calculations, X-ray photoelectron spectroscopy (XPS) and electrochemistry analysis were combined to analyze the electrochemical dissolution process of bornite during bioleaching. DFT calculations showed that bornite was a conductor with metallic conductivity. The formula of bornite …
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Bornite is an ore mineral of copper, and is known for its iridescent tarnish. "Peacock Ore", which is sold to amateur mineral collectors and tourists, is often labeled as a variety of Bornite.However, most Peacock Ore in reality is Chalcopyrite treated with acid, which produces a strongly-colored iridescent tarnish.Bornite is named for Ignatius von Born, …
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Bornite Isomertieite Arsenopalladinite Gold. Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite.Polished section (from microprobe analysis) in reflected light. Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian …
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Bornite is a copper iron sulfide mineral with a chemical composition of Cu5FeS4. It occurs in igneous, metamorphic, and sedimentary rocks. Minable concentrations of bornite occur in …
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The electrochemical dissolution process of chalcopyrite and bornite in acid bacteria culture medium was investigated by electrochemical measurements and X-ray photoelectron spectroscopy (XPS) analysis. ... Shan ZHU 1,2, Wen-qing QIN 1,2, Guan-zhou QIU 1,2, Jun WANG 1,2 1. School of Minerals Processing and Bioengineering, …
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During annealing, bdss first breaks down into bornite and digenite via solid-state exsolution. The bornite-digenite assemblage then exsolves chalcopyrite in local patches. ... of sulfide minerals and their textural evolution under hydrothermal conditions is a key issue in economic geology and mineral processing. This is especially important ...
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bornite 63.3 enargite 48.4 tetrahedrite 34.8 Oxide ores cuprite 88.8 tenorite 79.9 malachite 57.5 azurite 55.3 ... The first step, mineral processing, is to liberate the copper minerals and remove waste constituents—such as alumina, limestone, pyrite, and silica—so that the copper minerals and other nonferrous minerals of value are ...
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Bornite can be identified in the field by its color variations of copper red, bronze brown and purple. Its opaque form has {111} imperfect cleavage. This mineral has a metallic luster …
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Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the cubic system. It has a brown to copper-red color on fresh surfaces that tarnishes to an iridescent purple surface. Its purple to …
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Since then, several plants ultilized seawater to process sulfide minerals (Drelich and Miller, 2012; Jeldres et al., 2016;Moreno et al., 2011). For instance, Las Luces, a Cu-Mo plant, employed ...
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High-molecular-weight polymers based on anionic polyacrylamides (PAMs) are used as tailing flocculants in mineral processing plants. The recirculation of water recovered from the tailing thickeners to the flotation process introduces residual PAMs, which can impact the flotation of important copper sulfides like chalcopyrite, bornite, …
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Bornite Cu5FeS 4 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic, pseudocubic. Point Group: 2/m 2/m 2/m. ... of bornite, Cu5FeS 4, by the …
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Bornite Isomertieite Arsenopalladinite Gold. Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale …
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The mineral system characteristics of the Sudbury Ni-Cu-Co-PGE sulfide ore deposits. Peter C. Lightfoot, in Nickel Sulfide Ores and Impact Melts, 2017 The principal Cu-Fe-S …
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