Chile Cupper Chalcocite
Leaching of Pure Chalcocite in a Chloride Media Using Sea …
Chalcocite is the most important and abundant secondary copper ore in the world with a rapid dissolution of copper in an acid-chloride environment. In this investigation, the methodology of surface optimization will be applied to evaluate the effect of three independent variables (time, concentration of sulfuric acid and chloride concentration) in the leaching of pure chalcocite to …
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Pleistocene recycling of copper at a porphyry system, …
Pleistocene recycling of copper at a porphyry system, Atacama Desert, Chile: Cu isotope evidence Carlos Palacios & Olivier Rouxel & Martin Reich & Eion M. Cameron & Matthew I. Leybourne Received: 24 June 2010 /Accepted: 29 September 2010 /Published online: 16 November 2010 # Springer-Verlag 2010 Abstract We present Cu isotope data of hypogene and
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Copper (I) sulfide
Preparation and reactions. Cu 2 S can be prepared by treating copper with sulfur or H 2 S. [2] The rate depends on the particle size and temperature. [5] Cu 2 S reacts with oxygen to form SO 2: [6]. 2 Cu 2 S + 3 O 2 → 2 Cu 2 O + 2 SO 2. The production of copper from chalcocite is a typical process in extracting the metal from ores. Usually, the conversion …
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copper (Cu)
Copper (Cu) is a ductile, malleable, reddish-brown metallic element in group 11 (old group IB) of the periodic table; it is a transition element.Copper is of great importance because of its high electrical conductivity (only silver, among pure metals, conducts electricity better at room temperature) and thermal conductivity.
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Most Common Copper Minerals
Copper minerals can be broadly classified into sulfide minerals, oxide minerals, and native copper. The most common copper mineral is chalcopyrite, a sulfide mineral that contains about 34% copper by weight. Other important copper minerals include bornite, chalcocite, and malachite. These minerals can occur in a wide range of geological settings, …
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Current Status of Copper-Ore Processing: A Review
Leaders in copper ore processing include Chile, Peru, the United States, Australia, China, Russia, Mexico, Kazakhstan, Zambia, and Congo. Chile ... chalcopyrite, bornite, covellite, chalcocite, quartz, carbonates, plagioclases, and aluminosilicate clays. The initial content of copper in the ores is 0.3%, but the concentrate is expected to ...
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Dissolution kinetics of copper, white metal and natural chalcocite …
DOI: 10.1016/S0304-386X(98)00085-1 Corpus ID: 98550153; Dissolution kinetics of copper, white metal and natural chalcocite in Cl2/Cl− media @article{Herreros1999DissolutionKO, title={Dissolution kinetics of copper, white metal and natural chalcocite in Cl2/Cl− media}, author={O. Herreros and R. Quiroz and Joan Vi{~n}als}, journal={Hydrometallurgy}, …
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(PDF) Leaching of Pure Chalcocite with Reject Brine and …
Copper oxides processed by hydrometallurgy are becoming increasingly scarce in Chile (from 30.8% in 2015 to 12% in 2027), while copper sulphides are being found in more significant amounts [6] [7 ...
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Advancements on chemical−biological dissolution
Chao-jun FANG, et al/Trans. Nonferrous Met. Soc. China 34(2024) 283âˆ'297 292 Table 3 Part of mines that achieved industrial practice of chalcocite heap bioleaching Country Mine Operating period Reserve/kt Copper grade/% Ore processed/(kt·dâˆ'1) Ref. Chile Lo Aguirre 1980âˆ'1996 12000 1.5 16 [66] Chile Cerro Colorado 1993∠...
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SOUTH AMERICA
FCX operates two copper mines in South America ― Cerro Verde in Peru and El Abra in Chile. In addition to copper, the Cerro Verde mine also produces molybdenum concentrate and silver. Cerro Verde's expanded operations benefit from its large-scale, long-lived reserves and cost efficiencies and have continued to perform well. ...
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Copper Bioleaching Operations in Chile: Towards New
Spence is operated exclusively by BHP, and has produced copper cathodes by microbial leaching. The deposit contains reserves of copper oxides (1.14% Cu, mainly as atacamite; Cu 2 Cl(OH) 3) and copper sulfide ores (1.12% Cu, primarily supergene chalcocite and some minor amounts of covellite; CuS).These are mined and processed separately, as …
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Cupric and Chloride Ions: Leaching of Chalcopyrite …
In this paper, the effect of the cupric and chloride ions concentrations on copper dissolution from chalcopyrite concentrate was studied in acidified media. Variables included three different concentrations of Cu2+ (0.5, 1.5, and 2.5 g L−1), four different concentrations of Cl− (0, 5, 7, and 10 g L−1), two different pH values of 1 and 2, and a constant temperature of 60 °C. …
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Geology of the Las Luces deposit
The main copper event consists of chalcocite-series minerals ranging from geerite to djurleite and variable amounts of bornite. ... carbon, oxygen, and strontium isotope study of …
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Producing Copper Nature's Way: Bioleaching
Further, through the use of biooxidation, it is now possible to leach many of the copper sulfide minerals present in the ore. While chalcopyrite remains refractory to ambient temperature bioleaching, other copper sulfide minerals - the secondary sulfide minerals - such as chalcocite, covellite, bornite, etc. - are leachable by today's technology.
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Supergene Oxidation of Copper Deposits: Zoning and Distribution …
Copper Content of Leached Cap Volumes DISTRICT LEACHED CAP COPPER CONTENT Cananea, México X0 to low X00 ppm Cu derived from pyritic protolith with jarositic-goethite dominant capping Cerro Colorado, Chile Up to 2,000 ppm, as contamination from relic hypogene sulfides and residual supergene chalcocite ± Cu oxides Quebrada Blanca, Chile 700 to ...
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Chemical Composition Data of the Main Stages of Copper …
condida mines is chalcocite (15.3%, 21% and 53%, res pectively), ... the chemical composition of oxide copper ores from Chile may also be found in the liter-ature [60]. Table 3.
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Porphyry copper systems, zones of oxidation and …
encounter reducing conditions that allow the copper to precipitate out as chalcocite •Over time this action forms thick, copper rich, blanket-shaped zone, known as a supergene enrichment blanket (slides 7, 8, 12 and 13) ... Copper Deposit, Antofagasta Region, Chile. Economic Geology, v. 96, 2001, pp. 307–324 • Sillitoe, R., 2010. Porphyry ...
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LEACHING OF COPPER CONCENTRATES
Of the copper minerals, Chalcopyrite has proven the most difficult to treat hydrometallurgically, Its concen trates produce the greatest amount of by-products per pound of copper of any of the copper minerals, and it has proven to be comparatively resistant to' most oxidizing agents. Since chalcopyrite is the major copper sulfide, it warrants
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Chalcocite
Chalcocite is a copper sulfide mineral that has a dark gray to black color and a metallic luster. Its chemical formula is Cu2S, and it has a hardness of 2.5-3 on the Mohs scale. Chalcocite is often found in hydrothermal veins and is associated with other copper sulfide minerals such as chalcopyrite and bornite. It is a secondary mineral that ...
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COPPER AND COPPER-IRON SULFIDES AS THE INITIAL …
In numerous deposits of the Copiap6 mining district of northern Chile copper and cop-per-iron sulfides persist as early products of post-Miocene oxidation of hlpogene and ... supergene djurleite a.nd hlpogene chalcocite to digenite (or anilite), and to blaubleibender and normal covellite; and supergene digenite to blaubleibender and normal ...
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Copper Bioleaching in Chile
The copper production in Chile is based mostly on the exploitation of ores containing copper sulfides, with chalcopyrite (CuFeS 2), chalcocite (Cu 2 S), covellite (CuS), bornite (Cu 3 FeS 3), enargite (Cu 3 AsS …
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Pleistocene recycling of copper at a porphyry system
We present Cu isotope data of hypogene and supergene minerals from the Late Paleocene Spence Cu-Mo porphyry in the Atacama Desert of northern Chile. Chalcopyrite …
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La Planada Copper Mine In Tarapaca, Chile | The Diggings™
The La Planada Copper Mine is located in Tarapaca, Chile. It is characterized by a relatively small production output. ... The mined ore at La Planada Copper Mine mainly consists of three minerals: molybdenite, chalcopyrite, and chalcocite. The waste material associated with the ore primarily consists of pyrite and tourmaline. The identified ...
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A Manto-type Cu deposit in the Central Asian Orogenic Belt: …
Manto-type Cu deposits, which were first described in great detail in Chile and display relatively high grade (up to >8 wt% Cu), are an important Cu deposit type in the world (e.g. Wilson and Zentilli, 1999, Vilalll et al., 1996, Benavides et al., 2007).Manto-type Cu bodies always sit within volcanic or sedimentary strata and are mostly structurally controlled (Megaw et al., …
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(PDF) Copper Recovery from Chalcopyrite …
A copper ore containing mixture of tetrahedrite (Cu12Sb4S13) and tennantite (Cu12As4S13) as main copper bearing minerals were used in the current study to investigate antimony (Sb) and arsenic (As ...
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Optimal conditions for ammonia leaching of …
to leach the copper/chalcocite from the pyrite particles, using ammonia in the presence of air (Ntuli et al., 2011), so that the freed pyrite could be depressed in a subsequent high pH flotation bath. Ammonia solution as a leaching medium for base metals can be considered as an excellent alternative to acidic
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Age of mineralization by basinal fluids at the El Soldado …
El Soldado is the largest manto-type copper deposit in the Coastal Range of central Chile (Fig. 1; 32°38′ lat. S; 71°04′ long.W), with significant production plus reserves of 200 Mt at 1.35% Cu, including 70 Mt at 1.8% Cu mined out from rich zones (Boric et al., 2002).Recent work Wilson and Zentilli, 1999, Wilson et al., 2003 have indicated that the deposit formed by …
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Chalcocite (bio)hydrometallurgy—current state, mechanism, …
In 2014, Chile and Peru, as two big copper producers in the world, produced 42% and 33% of the worldwide copper through bioleaching, respectively [52], [53].Pilot bioleaching plants have been well established worldwide, and most of them have similar optimal operating parameters, including moderate temperature usually below 50 °C, redox potential value …
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Leaching of Pure Chalcocite in a Chloride Media Using …
Studying the dissolution of chalcocite allows to understand the behavior of the most abundant secondary sulfide ore in copper deposits, while digenite (Cu1.8S) and other intermediate sulfides (Cu2−xS) are often associated with chalcocite. The most common mechanism of dissolution is by two stages, and chloride ions benefit the kinetics of dissolution. In this study, a pure …
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Chemical Composition Data of the Main Stages of Copper
Note that the main copper mineral from Lomas Bayas, El Salvador, and ndida mines is chalcocite (15.3%, 21% and 53%, respectively), whereas the main …
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