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Ferric Chloride Leaching Of Copper From Chalcopyrite

Ferric Chloride Leaching Of Copper From Chalcopyrite

Jul 06, 2008 In this research, the effect of mechanical activation, via ball milling, of copper sulfide concentrate on the efficiency and mechanism of copper leaching in an acidic ferric chloride solution was investigated. Copper concentrate, containing chalcopyrite as the main constituent, was supplied from Sarcheshme mine, located in the central part of Iran. By 24 hours of ball milling, the size of the ...

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Ferric Chloride Leaching Of Copper From Chalcopyrite

  • Copper Leaching From Nanoparticles Of Chalcopyrite

    Jul 06, 2008 In this research, the effect of mechanical activation, via ball milling, of copper sulfide concentrate on the efficiency and mechanism of copper leaching in an acidic ferric chloride solution was investigated. Copper concentrate, containing chalcopyrite as the main constituent, was supplied from Sarcheshme mine, located in the central part of Iran. By 24 hours of ball milling, the size of the ...

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  • Ferric Chloride Leaching Of Copper From Chalcopyrite

    Copper Leaching From Chalcopyrite Concentrate in Cu (II)-Fe. A high calcium chloride concentration (110–165 g/L) was used to main-Chloride leaching Chalcopyrite tain a high cuprous solubility and enhance copper leaching. With 3–4 h of leaching time for each stage, the copper extraction reached 99% or higher while that of iron was around 90%.

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  • Optimization Of Ferric Chloride Leaching

    copper extraction from chalcopyrite of approximately 89% were achieved. Keywords: Chalcopyrite, acid leaching, ferric ion, Taguchi experimental design, Minitab 16.0. Introduction Chalcopyrite, (CuFeS2), is the most important copper mineral in nature.1,2 It is generally separated from associated gangue minerals by

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  • Cupric Chloride Leaching Of Chalcopyrite Springerlink

    Dec 11, 2014 D.L. Jones and E. Peters, “The Leaching of Chalcopyrite with Ferric Sulphate and Ferric Chloride,” in Extractive Metallurgy of Copper, Vol. II, edited by J.C. Yannopoulos and J.C. Agarwal, TMS-AIME, 1976, p. 633–653. Google Scholar Download references

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  • Ferric Chloride Leaching

    Oct 15, 2018 Ferric chloride leaching can be made selective, and more than 99 pct lead extraction can be obtained in 15 min. Additional leaching time increases solubilization of chalcopyrite and sphalerite. Because leaching and filtration were performed batchwise in the experimental unit, the contact time between solution and concentrate was at least 30 min ...

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  • Cupric And Chloride Ions Leaching Of Chalcopyrite

    Oct 18, 2019 This makes the dissolution more beneficial in cupric chloride solutions compared to ferric chloride solutions [43–45]. It has also been revealed that the addition of cupric chloride to ferric chloride leaching helps chalcopyrite dissolution [46]. The capability of chloride …

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  • The Leaching Of Chalcopyrite In Ferric Chloride And Ferric

    Jul 18, 2013 Ferric chloride is a more effective reagent and this is attributable to the morphological characteristics of chalcopyrite leaching. The kinetics with both leachant solutions were found to be linear over an extended period, followed by an acceleration stage, as a …

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  • Kinetic Study Of Chalcopyrite Leaching With Iron Iii

    For the final reaction 16 mol of ferric chloride are necessary for an entire oxidation of one mol of chalcopyrite, this means that for 1 gr of chalcopyrite 14.14 g of FeCl 3 are required, nevertheless due to the final products of the leaching process in the present and other previous studies (Majima, Awakura et al. 1985, Havl k, Škrobian et ...

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  • Ferric And Cupric Chloride Leaching Of Valuable Metals

    the oxidant concentration increased up to 50 g/L in cupric chloride leaching, and copper extraction was lower (15 – 30 %-units) than in ferric chloride leaching (Figure 2). Figure 2: Extraction of copper in ferric and cupric chloride leaching with various concentrations of oxidants (pH = 1 – 1.8, T = 95 C, concentration of NaCl = 250 g/L).

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  • Leaching Of Primary Copper Sulfide Ore In Chlorideferrous

    Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ...

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  • Leaching Of Chalcopyrite In Cupric Chloride Solution

    In general, the leaching of chalcopyrite is more effective in chloride solutions with cupric ions as the oxidant than in sulfate solutions with ferric ions as the oxidant. This is possibly due to kinetic rather than thermodynamic considerations e.g. the higher rates of electron transfer in chloride

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  • Pdf Leaching Of Chalcopyrite With Ferric Ion Part I

    Leaching of chalcopyrite with ferric ion. Part II: Effect of redox potential. By Antonio Ballester. THE KINETICS OF THE DISSOLUTION OF CHALCOPYRITE IN CHLORIDE MEDIA Lilian De Lourdes Vel squez Y venes Metallurgical Engineer. By Gustavo Quezada. A Review on Novel Techniques for Chalcopyrite Ore Processing.

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  • Ca2651516c Chloride Heap Leaching Google Patents

    A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.

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  • Chloride Leaching For Chalcopyrite Ubc Library Open

    Title: Chloride leaching for chalcopyrite: Creator: Liddicoat, Jenni Anne: Publisher: University of British Columbia: Date Issued: 2003: Description: Two new process flowsheets have been developed which combine chloride leaching for chalcopyrite with solvent extraction, to selectively transfer copper to a conventional sulfate electrowinning circuit.

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  • The Leaching Of Chalcopyrite With Ferric Chloride Nasaads

    The leaching of chalcopyrite with ferric chloride. A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to elucidate the leaching mechanism of chalcopyrite with FeCl 3. The leaching rate of chalcopyrite exhibits a half order dependency on the FeCl 3 concentration, whereas it is independent of the FeCl 2 ...

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  • Solvometallurgical Process For Extraction Of Copper From

    leaching of chalcopyrite. The most often used lixiviants are acidic chloride media, acidic sulfate media and basic ammonia solutions, together with various oxidizing agents.3–7 The most often used oxidizing agents are oxygen, ferric sulfate, ferric chloride or cupric chloride.8–13 Various other oxi-

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  • Leaching Of Chalcopyrite With Acidified Ferric Chloride

    Abstract Leaching characteristics of chalcopyrite concentrate from Cuba were investigated in acidified FeCl 3 and acidified FeCl 3 + CCl 4 . Carbon tetrachloride was used as solvent for the elemental sulfur produced during leaching. The tests shows higher extraction for copper in the presence of CCl 4 . Leaching in the absence of CCl 4 is a chemically controlled reaction with an apparent ...

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  • A Review Of Chloride Assisted Copper Sulfide Leaching By

    2007). Elemental sulfur formed during the leaching of chalcopyrite with ferric chloride is also more porous than that formed with ferric sulfate, thus the leaching rate is an order of magnitude larger in the former (Majima et al., 1985). Peters (1976a) reported that chalcopyrite, the …

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  • Study Of Integrated Leaching And Electrowinning Of Copper

    Results showed that high hydrochloric acid and cupric ion concentration assisted leaching; on the other hand, electrowinning of copper from chalcopyrite ore leaching solution using chloride media is much feasible when acid and cupric ion concentrations are low (0.05 M/l and 0.01 M/l, respectively).

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  • Silvercatalyzed Bioleaching Of Lowgrade Copper Ores

    The leaching of copper from the low-grade copper ore can be very effectively enhanced ... have been proposed for the leaching of chalcopyrite, ferric ion is by far the most widely-used oxidant in acid medium ... ferric sulfate, unlike ferric chloride, is not a very effective lixiviant for the dissolution of copper …

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  • Rapid Atmospheric Leaching Of Chalcopyrite Using A Novel

    The chloride concentration is greater than 0.5M, and increasing the chloride ion has little effect on the leaching rate of chalcopyrite . When strong oxidants, such as chlorate and hypochlorous acid, etc., are added to the chloride system, most of the sulfur in chalcopyrite can be directly oxidized to SO 4 2− (Equations (9) and (10)), and the ...

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  • Direct Recovery Of Metals From Sulphide Ores By Leaching

    Ferric chloride is provided as the leaching agent, with sufficient hydrochloric acid being present to prevent precipitation of metal hydroxides. Copper is dissolved from the concentrates by the action of ferric chloride in solution and the reaction, using chalcopyrite …

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