bornite mineral processing
Comparison of electrochemical dissolution of chalcopyrite and bornite
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. ... (Bio)Hydrometallurgy is a common technology in processing copper sulfide minerals. With the decline in ore grades and …
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Minerals | Free Full-Text | Insights into the Surface …
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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Applications of electrochemical techniques in mineral analysis
Carbon paste electroactive electrodes as a working electrode could be made by mixing minerals (chalcopyrite or bornite or mixture of chalcopyrite and bornite), graphite and solid paraffin ... Accompanying with new methods to pre-processing the solid minerals into solution phase, EC assays will be more appropriately used in analyzing …
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Biodissolution of pyrite and bornite by moderate thermophiles
XRD and XPS results showed that ore residues contained jarosite, and the dissolving residue of bornite contained elemental sulfur. The dominant bacterial genus in pyrite dissolution was A. caldus, and L. ferriphilum in bornite dissolution. To sum up, microbes significantly accelerated the mineral dissolution process and promoted the …
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Minerals | Free Full-Text | The Effect of an Anionic …
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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Insights into the Surface Transformation and …
Minerals 2018, 8, 173 2 of 22 regarded as a reverse biomineralization process. Therefore, the research on the surface transformation and dissolution process of bornite in the presence of ...
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Minerals | Free Full-Text | Intermediates Transformation of Bornite …
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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Minor and trace elements in bornite and associated …
Understanding of Cu–(Fe)-sulfide mineral chemistry has both processing and exploration implications in all the above deposit types. This is because knowledge of the minor and trace elements carried by a host sulfide, including bornite, is essential to evaluate the distribution and partitioning of potential economically-valuable components ...
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The Genesis and Spatial Distribution of Ore Mineral Species …
The sulfide ores include bornite, chalcocite, covellite, and chalcopyrite, while the oxide ores consist of malachite, azurite, and cuprite. ... of geometallurgical modelling to mine planning in a copper-gold mining operation for improving ore quality and mineral processing efficiency. The Journal of African Institute of Mining and Metallurgy ...
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Wang JUN | Professor, Head of Department, Laboratory …
focus on (1)interficial interactions of metal sulfide mineral bioleaching; (2) rutile flotaion&metallurgy; (3) bioleaching industrial application
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Electrochemical interaction of bornite with grinding …
The electrochemical interaction and pulp chemistry during grinding of bornite were investigated by measuring the Eh, dissolved oxygen, rest potential and polarisation …
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Copper Sulfide
Electronic properties of sulfide minerals and floatability. Jianhua Chen, ... Ye Chen, in Electronic Structure and Surfaces of Sulfide Minerals, 2020. 2.1.1 Crystal structure of copper sulfides. Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1].The major copper sulfide ores contain …
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Bornite | Mineralogy4Kids
Bornite Known as the "peacock ore" due to it quickly tarnishing to an iridescent purple after exposure to air and moisture, this mineral has been known since 1725, but was not given its current name until 1845 when it was named for Ignaz von Born (1742-1791), an Austrian mineralogist. A widely occurring copper ore, it is usually found ...
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Microscopic Appearance Transformation of Bornite During …
The present work seeks to contribute to a better understanding of microscopic appearance transformation of bornite during acid leaching and bioleaching …
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Bornite peacock ore: The mineral Bornite information and …
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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A comparative study of electrochemical behavior of …
The formation of soluble species from a bornite flotation concentrate pre-treated with hydrochloric acid was studied. Copper recovery after a leaching in a H2SO4-NaCl solution was determined.
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A comparative study of electrochemical behavior of …
0.2 g of mineral (chalcopyrite, bornite or chalcocite) in an agate mortar. The resulting powder was added with 0.8 ml of silicon oil (Aldrich) and this was mixed to form a
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Investigating the Influence of the Electrochemical …
The rest potential can be exploited to preferentially float one mineral over another as these properties result in different regions of flotation stability for different minerals. Bornite and ...
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Copper processing
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 …
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Bornite – WGNHS – UW–Madison
Bornite forms as a primary hydrothermal precipitate or a later supergene replacement mineral. It occurs with other copper minerals such as covellite, malachite and azurite. It …
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Exsolution of chalcopyrite from bornite-digenite solid …
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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Gold-Copper Ores
A brief review of the reactions that occur between cyanide and most copper minerals will illustrate how cyanide is consumed and where it is irretrievably lost and sets the background to the various processes that have been developed to address the problems posed by copper in gold ores during cyanidation. ... Bornite: FeS·2Cu 2 …
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Induction Time Measurements for Air Bubbles on Chalcopyrite, Bornite
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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Minerals | Free Full-Text | Evaluation of the Relationship …
The study evaluated the milling kinetics of three copper ores, from a multi-mineralised deposit, which were identified as sulphide 1 (with bornite as a dominant copper mineral), sulphide 2 (mainly composed of chalcopyrite) and oxide (with malachite as a dominant copper mineral) and related the breakage parameters to the mineral …
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Bornite (Peacock Ore) – Occurrence, Properties, and …
Occurrence of Bornite and Useful Mineral Association. Bornite is associated with, and disseminated in, mafic igneous rocks, pegmatites, medium-to high-temperature …
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Synchrotron XPS studies of solution exposed chalcopyrite, bornite…
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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Copper (Cu) Ore | Minerals, Occurrence » Geology Science
Copper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to its excellent electrical and thermal conductivity, high ductility, and resistance to corrosion. Copper is widely used in various applications, …
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Bornite (Peacock) : Properties, Formation, Uses …
Bornite, also known as peacock ore, is a copper iron sulfide mineral with iridescent colors. Learn about its chemical, physical and …
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Bornite Cu5FeS 4
Bornite is a copper-iron sulfide mineral with a copper-red to brown color and a pseudocubic crystal system. It is an important ore of copper and occurs in various …
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Minerals | Free Full-Text | Investigating the Influence of the
Beneficiation of sulphide ores by flotation is ascribed to the natural electrochemical activity associated with sulphide minerals. Flotation is an electrochemical process comprising many interdependent conditions that are difficult to decouple in terms of controlling flotation performance. The extent of electrochemical activity is mineral …
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