(PDF) Copper Extraction from Low-Grade Chalcopyrite in a …
Compared with bioleaching of a mixture of chalcopyrite concentrate and porphyry molybdenite, bioleaching of chalcopyrite concentrate achieved higher coulomb production but lower copper extraction ...
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Chalcopyrite Dissolution: Challenges | SpringerLink
The lattice energy of chalcopyrite is close to 17,000 kJ mol −1, and the standard enthalpy of formation ΔH f and the standard Gibbs free energy of formation ΔG f ° values are −193.6 and −190.6 kJ mol −1, respectively.These ΔH f and ΔG f ° values are in the common range for sulfide minerals and do not explain the recalcitrance and unfavorable kinetics of chalcopyrite …
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Solvometallurgical process for extraction of copper from chalcopyrite
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 ...
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inorganic chemistry
Chalcopyrite $(ce{CuFeS2})$ is the most common copper bearing mineral on earth (Approximately 70% of the world's copper reserves are contained in the mineral chalcopyrite), but also the most stable minerals because of its structural configuration, face-centered tetragonal lattice (Ref.1). At present, there are basically two main methods ...
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Extraction of Copper from Chalcopyrite Using Alkaline …
A conceptual flowsheet is proposed, where chalcopyrite concentrate can be extracted by a leaching–grinding process and copper can be recovered by a solvent extraction–electrowinning circuit. Chalcopyrite is well known as being refractory to conventional leaching approaches at atmospheric pressure.
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Kinetics of Chlorination of chalcopyrite concentrates
Chlorination behaviors of two chalcopyrite concentrates and their pure constituents in Cl 2 +N 2 were investigated by thermogravimetric analysis in non isothermal conditions up to 1000 °C. The effect of temperature on the reaction of chlorine with both concentrates was studied between 170 °C and 300 °C under isothermal conditions. The effects of gas flow rate, chlorine content of …
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Copper Recovery from Chalcopyrite Concentrate by …
In this study, a combined process consisting of salt roasting and acid leaching was conducted to recover copper per sulphide concentrate with 43.5% of chalcopyrite.
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inorganic chemistry
In the roaster, the copper concentrate (chalcopyrite) is partially oxidized to produce alkaline $(ce{Cu2S})$ and sulphur dioxide $(ce{SO2})$ gas. The chalcopyrite ore is …
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Simultaneous extraction of copper and iron from …
One of the major primary sources of copper is chalcopyrite (CuFeS 2). Copper can be directly extracted from the chalcopyrite and concentrated ore. Chalcopyrite-associated …
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Simultaneous extraction of copper and iron from chalcopyrite
One of the major primary sources of copper is chalcopyrite (CuFeS 2). Copper can be directly extracted from the chalcopyrite and concentrated ore. Chalcopyrite-associated minerals contain copper (Cu), iron (Fe), zinc (Zn), and Sulphur (S).
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Improving of copper extraction from chalcopyrite by using …
The addition of NaCl in the ammonium persulfate-APS (as an oxidant) leaching was investigated. APS has some advantages compared with conventional oxidants and its standard redox potential (E°) is 2.0 V. Effect of six parameters such as NaCl concentration, APS concentration, temperature, time, liquid–solid ration (L/S), and stirring speed on the leaching …
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Extraction of Copper from Chalcopyrite Using Alkaline …
The chalcopyrite samples used in this study were obtained from a museum-quality specimen in Perth, Western Australia. The P 80 particle size of the head sample analyzed
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Copper extraction from low-grade chalcopyrite in a …
Copper extraction along with electricity generation from the low-grade chalcopyrite was achieved in the bioleaching process assisted by MFCs. After 197 days bioleaching, 423.9 …
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Optimization of Ferric Chloride Leaching Parameters of …
Résumé-Lors de la lixiviation de la chalcopyrite avec des solutions d'acide sulfurique, la vitesse d'extraction du cuivre atteint un maximum à un potentiel rédox donné. Cet article examine notre étude de la détermination du potentiel rédox optimal de lixiviation de la chalcopyrite.
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Enhancement of Cu Extraction from Chalcopyrite by …
Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, France. Florent Bourgeois, Carine Julcour & Laurent Cassayre. ... Enhancement of Cu Extraction from Chalcopyrite by Implementation of In Situ Attrition in Bioleaching Process. In: Metallurgy and Materials Society of CIM (eds) Proceedings of the 63rd Conference of ...
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Chalcopyrite : (Copper) Properties, Formation, Uses, Deposits
Color: Chalcopyrite typically exhibits a brassy-yellow color, although it can also appear as a tarnished or iridescent surface due to weathering.The color can vary depending on impurities and weathering conditions. Luster: Chalcopyrite has a metallic luster, resembling the luster of polished brass or gold.The reflective, shiny surface is a characteristic feature of …
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Solvometallurgical process for extraction of copper …
In this study, a solvometallurgical process for the extraction of copper from suldic ore minerals. (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl3 as oxi-dizing agent and ethylene glycol (EG) as organic solvent). All the studied copper sulde minerals could be. ffi ciently with a FeCl3–EG solution.
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The Extraction of Copper from Chalcopyrite …
To dissolve copper from chalcopyrite, the oxidants applied for chalcopyrite leaching need to have a high potential to oxidize sulfide sulfur from chalcopyrite to elemental sulfur or sulfate.
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Hydrometallurgical Processing of Chalcopyrite by Attrition …
We report the investigation of a chalcopyrite leaching process that implements millimeter-sized glass beads that are stirred in the leach reactor to combine particle grinding, mechanical activation, and surface removal of reaction products.
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Hydrometallurgical Processing of Chalcopyrite by …
We report the investigation of a chalcopyrite leaching process that implements millimeter-sized glass beads that are stirred in the leach reactor to combine particle grinding, mechanical activation, and surface removal of reaction …
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40 Facts About Chalcopyrite
Chalcopyrite is a dazzling mineral that often catches the eye with its golden, metallic luster. But what exactly is it? Chalcopyrite is a copper iron sulfide mineral with the chemical formula CuFeS₂. It's the most important copper ore, making it a key player in the mining industry. Found in igneous, metamorphic, and sedimentary rocks, this mineral is not just about looks; it's a powerhouse ...
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Solvometallurgical process for extraction of …
In this paper, we describe a green solvometallurgical process for the extraction of copper from sulfidic ore minerals, with the emphasis on chalcopyrite. The preferred organic solvent is ethylene glycol with FeCl 3 as …
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The Extraction of Copper from Chalcopyrite Concentrate …
To dissolve copper from chalcopyrite, the oxidants applied for chalcopyrite leaching need to have a high potential to oxidize sulfide sulfur from chalcopyrite to elemental sulfur or sulfate.
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Solvometallurgical process for extraction of copper from chalcopyrite
In this paper, we describe a green solvometallurgical process for the extraction of copper from sulfidic ore minerals, with the emphasis on chalcopyrite. The preferred organic solvent is ethylene glycol with FeCl 3 as the oxidizing agent.
WhatsApp: +86 18221755073
inorganic chemistry
In the roaster, the copper concentrate (chalcopyrite) is partially oxidized to produce alkaline $(ce{Cu2S})$ and sulphur dioxide $(ce{SO2})$ gas. The chalcopyrite ore is heated strongly with silicon dioxide (silica) and air or oxygen in the furnace or series of furnaces.
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Solvometallurgical process for extraction of copper from …
In this study, a solvometallurgical process for the extraction of copper from suldic ore minerals. (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant …
WhatsApp: +86 18221755073
Copper extraction from low-grade chalcopyrite in a …
Copper extraction along with electricity generation from the low-grade chalcopyrite was achieved in the bioleaching process assisted by MFCs. After 197 days bioleaching, 423.9 mg copper was extracted from 200 g ore and the average coulomb production reached 1.75 C/d.
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A Review on Novel Techniques for Chalcopyrite Ore …
A detailed review of chalcopyrite deposits, production and consumption, mining, ore processing, steps involved in the pyrometallurgical and hydrometallurgical processing of copper as well as the dissolution kinetics and microbial studies of chalcopyrite ore were discussed.
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The Extraction of Copper from Chalcopyrite …
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 …
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NK PhD Thesis Couverture
Extraction des Métaux de Valeur des Concentrés de Chalcopyrite et de Chromite par Chloruration Soutenue publiquement le 7 NOVEMBRE 1995, devant la Commission d'Examen
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