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copper ores chalcopyrite bornite chalcocite
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Solvometallurgical process for extraction of copper from …
Copper can be extracted from various types of ores, most of which belong to the sulfidic ores such as chalcopyrite, bornite, covellite, digenite and chalcocite. Chalcopyrite is the most common copper-bearing mineral and accounts for approxi-mately 70% of the copper deposits in the world.1 At present,
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Copper Sulfide
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 chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS), and chalcocite (Cu 2 S). The concentrates of copper from sulfides ores are generally performed by flotation and then processed by ...
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Electrolytic production of copper from chalcopyrite
Ninety percent of global copper resources are sulfide ores, where most of the copper is in the form of covellite (CuS), chalcocite (Cu 2 S), chalcopyrite (CuFeS 2), and bornite (Cu 5 FeS 4). Covellite and chalcocite are surface deposits and can be treated economically, but these resources are largely exhausted.
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Chalcocite: The mineral Chalcocite information and pictures
Chalcocite is an important copper ore. It has a high copper content and the process of extracting the copper from the sulfur in Chalcocite is relatively easily. Chalcocite is also an important collector's mineral, and good crystals command very high prices. In Europe, a classic Chalcocite locality is Cornwall, England.
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Replacement reactions of copper sulphides at moderate temperature …
In natural ore, chalcopyrite and bornite are commonly associated with secondary sulphides including chalcocite (Cu 2 S), digenite (Cu 1.8 S), and covellite (CuS). Because targeting of specific minerals during ISR operating in complex composite natural deposits is nearly impossible, the reactions between the lixiviant and secondary sulphide ...
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The grain of a primary bornite at the conversion stage to chalcocite …
The complete reaction of chalcopyrite at ≥220 °C under pressure oxidation conditions (10 or 20% w/w pulp density, PO2 700 kPa) is a clean process producing a residue consisting of hematite and ...
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Chalcocite | Copper Ore, Sulfide Ore, Ore Mining | Britannica
ore. chalcocite, sulfide mineral that is one of the most important ores of copper. Valuable occurrences include deposits of sulfide minerals at Ely, Nev., and Morenci, Ariz., where other components of the original rock have been dissolved away; it is also found with bornite in the sulfide veins of Tsumeb, Namibia, and Butte, Mont.
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Copper processing
The flotation concentrate is then dewatered and filtered to produce a filter cake that is sent to a copper smelter. Copper processing - Ores, Refining, Smelting: Principal forms in which copper ores are found include native copper, porphyry copper, massive deposits, and mixed ores. Native copper is simply the metal found unadulterated in nature.
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MIT Open Access Articles Electrolytic production of …
global copper resources are sulfide ores, where most of the copper is in the form of covellite (CuS), chalcocite (Cu 2S), chalcopyrite (CuFeS 2) and bornite (Cu 5FeS 4). …
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Solvometallurgical process for extraction of …
Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
The change in pH allows the copper and iron atoms to dissolve from the copper ore lattice, leaving a surface deficient in metals and rich in sulfur rather than elemental sulfur (Equation (13)). ... G.W. The Flotation of Chalcocite, Bornite, Chalcopyrite and Pyrite in an Electrochemical Cell. In Proceedings of the 15th …
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MIT Open Access Articles Electrolytic production of …
(CuS), chalcocite (Cu 2S), chalcopyrite (CuFeS 2) and bornite (Cu 5FeS 4). Covellite and chalcocite are surface deposits and can be treated economically, but these resources are largely exhausted. Typically formed at greater depths, chalcopyrite is the major copper mineral remaining, constituting over 70% of the global copper reserve [9].
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Chalcopyrite
Chalcopyrite contains 34.5% Cu, 30.5% Fe, and 35.0% S. The mineral is the principal source of copper metal, and one of the major source of sulfur. The mineral also contains traces of elements of gold and nickel and recovered in refinery. The crystal system is tetragonal with indistinct cleavage and penetration twins.
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Chalcopyrite: Mineral Uses and Properties
Associated ore minerals include pyrite, sphalerite, bornite, galena, and chalcocite. Chalcopyrite serves as the copper source for many secondary mineral deposits. …
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Chalcocite (bio)hydrometallurgy—current state, mechanism, …
Several minerals of interest are semiconductors, such as stibnite (Sb 2 S 3), chalcopyrite (CuFeS 2), chalcocite (Cu 2 S), bornite (Cu 5 FeS 4), and sphalerite (ZnS). Thus, understanding the nature of these minerals in contact with an electrolyte solution is crucial for promoting efficiency and scalability of hydrometallurgy, as the efficiency ...
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A comparative study of electrochemical behavior of chalcopyrite …
E.g., chalcopyrite is reduced in chalcocite, bornite, and metallic copper [122]. Reductive dissolution is the process where the passivation phenomena are prevented [121], [123]. ...
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Dissolution kinetics and solubilities of copper
In the mining of porphyry copper ores, the deposit is usually divided into metallurgical units that have three different destinations: ... A comparative study of electrochemical behavior of chalcopyrite, chalcocite and bornite in sulfuric acid solution. Int. J. Miner. Process., 67 (2002), pp. 17-28, 10.1016/S0301-7516(02)00003-0.
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Thermodynamic and Kinetic Mechanisms of Bornite/Chalcopyrite …
A thermodynamic and kinetic model is proposed to explain the formation of bornite, chalcopyrite, and magnetite during partial roasting of enargite-containing copper concentrates. The proposed mechanism involves solid–solid–gas and solid–gas reactions between chalcocite, pyrrhotite, gaseous sulfur, and oxygen. Bornite formation could be …
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Solvometallurgical process for extraction of copper from chalcopyrite …
Copper can be extracted from various types of ores, most of which belong to the sulfidic ores such as chalcopyrite, bornite, covellite, digenite and chalcocite. Chalcopyrite is the most common copper-bearing mineral and accounts for approximately 70% of the copper deposits in the world. 1 At present, the main method for copper production from ...
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Solvometallurgical process for extraction of copper from chalcopyrite …
Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl 3 as oxidizing agent and …
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Bornite: A mineral, an ore of copper, often called …
Bornite is easily recognized because it tarnishes to iridescent shades of blue, purple, red, green and yellow. It is commonly called "peacock ore" or "purple copper ore" after these iridescent colors. Upon surface …
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Chalcocite (cc) | SpringerLink
This chapter describes the important copper ore Chalcocite (abbrv. cc), as seen with optical, reflected light microscopy. Compositional data, main properties and …
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Replacement reactions of copper sulphides at moderate …
Here we present experimental observations on mineral replacement reactions of coarse-grained natural bornite (Cu 5 FeS 4 )–chalcocite (Cu 2 S) samples in acidic …
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Origin of the Nchanga copper–cobalt deposits …
The sulfide mineralogy includes pyrite, bornite, chalcopyrite, and chalcocite, although in the Lower Orebody, sulfide phases are partially or completely replaced by malachite and copper …
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Bornite
For example, chalcopyrite and bornite are easily depressed by lime and cyanide. This is mainly because the outer electrons of the copper atom are 3d 10, which is full, so copper atom has low reactivity. For iron atom, the outer electrons are 3d 6, which has an unoccupied orbital, so iron atom shows more reactivity. (2)
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Shades of Bornite: Exploring the Rainbow of This Unique …
Bornite is easily confused with chalcopyrite and chalcocite. However, chalcopyrite has a brighter brassy yellow color. Chalcocite has a dark gray streak rather than bornite's black streak. ... Final Thoughts on Bornite. Bornite is a copper ore that reveals nature's wonders through dazzling iridescent tarnishing. Its chameleon-like …
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Bornite: A mineral, an ore of copper, often called …
"Peacock Ore" Bornite is easily recognized because it tarnishes to iridescent shades of blue, purple, red, green and yellow. It is commonly …
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Hypogene enrichment in Miduk porphyry copper ore …
According to that chalcopyrite is the principle hypogene copper bearing sulphide mineral in Miduk and other PCDs 46 and typically secondary hypogene formation of bornite in Miduk as an evidence ...
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Copper (Cu) Ore | Minerals, Occurrence » Geology Science
Here is a summary of the key points regarding copper (Cu) ore: 1. Copper ore is a mineral deposit that contains copper in concentrations high enough to be economically extracted and processed. 2. Copper ore minerals include chalcopyrite, bornite, chalcocite, and malachite, among … See more
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A review on bornite (bio)leaching
Chalcocite, Bornite, Chalcopyrite, Covellite, Pyrite, Galena, and Sphalerite: Dolomitic shales: Syngenetic sedimentary (Sawlowicz, 2013) Cu-Ag deposit: ... Bornite, as a copper sulfide ore with low rest potential, is usually leached preferentially. Then, due to its preferential dissolution, it provides a relatively lower redox potential for ...
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Chalcopyrite : (Copper) Properties, Formation, …
Chalcopyrite is a mineral and ore of copper. Its chemical composition is CuFeS2, meaning it contains copper (Cu), iron (Fe), and sulfur (S). Chalcopyrite is one of the most important copper ores and is …
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Chalcocite | Copper Ore, Sulfide Ore, Ore Mining
chalcocite, sulfide mineral that is one of the most important ores of copper. Valuable occurrences include deposits of sulfide minerals at Ely, Nev., and Morenci, Ariz., where other components of the original rock …
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Chalcocite
Copper can be found in more than 200 minerals, but only about 10% of this occurs in the form of sulphide minerals (e.g., chalcopyrite, bornite and chalcocite) or oxidized minerals (e.g., cuprite), which are of significance as copper ores (Lossin, 2001). Depending mainly on the ore type, as well as the geographical, economic and environmental ...
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Minerals | Free Full-Text | Investigating the Influence of the
Bornite is typically found as a secondary mineral in chalcopyrite and chalcocite deposits in copper-molybdenum and copper-gold ores. Chalcocite, although scarce, is still found as a primary mineral and has proved to be one of the most profitable copper ores to mine as it produces copper concentrates ranging from 37% to 40% …
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The separation of chalcopyrite and chalcocite from pyrite …
With the depletion of chalcopyrite-dominant copper ores, more and more chalcocite-dominant copper ores with a high pyritic content are treated. There is a general industrial observation that chalcocite-dominant copper ores are more difficult to treat in particular in cleaner flotation after regrinding (Wightman et al., 2011).
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Chalcocite (cc) | SpringerLink
This chapter describes the important copper ore Chalcocite (abbrv. cc), as seen with optical, reflected light microscopy. Compositional data, main properties and optical parameters are first summarized (introductory table and preliminary remarks). ... Typical companions in hypogene formations are chalcopyrite, bornite, sphalerite, …
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A Review of the Flotation of Copper Minerals
Copper is most commonly present in the earth's crust as copper-iron-sulphide and copper sulphide minerals, for example, chalcopyrite (CuFeS2), bornite (Cu5FeS4) and chalcocite (Cu2S). …