ferric chloride leaching of pper from chalpyrite

(PDF) Copper Leaching from Nanoparticles of Chalcopyrite ...

A method to recover copper and elemental sulfur from chalcopyrite concentrate, using a ferric chloride leach, CuFeS//2 plus 3FeCl//3 yields CuCl plus 4FeCl//2 plus 2S, was reported by the Federal ...

Ferric chloride leaching of chalcopyrite: Synergetic ...

In order to leach chalcopyrite and chalcocite under atmospheric or high pressure leaching conditions in sulfate or chloride medium, ferric and copper ions, bacteria, oxygen and other oxidizers can ...

Ferric chloride leaching of sulphidized chalcopyrite ...

Mar 01, 1983  Reactions between chalcopyrite and elemental sulphur at between 320°C and 400°C produce various combinations of covellite, nukundamite (Cu 5,5 FeS 6,5, and pyrite depending on the sulphur content of the products.If all the contained copper is transferred to covellite, and iron to pyrite, at least 95% of the copper can be leached by ferric chloride with negligible iron dissolution at up to 70°C.

Chloride leaching of chalcopyrite - ScienceDirect

Dec 01, 2007  The leach conditions chosen for the 2 stage countercurrent leach experiments were based on literature investigations that indicated an atmospheric leach, near boiling point, at low pH, using relatively fine particles and high concentrations of chloride and copper(II) oxidant are important for effective and efficient leaching of chalcopyrite ...

(PDF) Copper Leaching from Nanoparticles of Chalcopyrite ...

A method to recover copper and elemental sulfur from chalcopyrite concentrate, using a ferric chloride leach, CuFeS//2 plus 3FeCl//3 yields CuCl plus 4FeCl//2 plus 2S, was reported by

Ferric chloride leaching of sulphidized chalcopyrite ...

Mar 01, 1983  Reactions between chalcopyrite and elemental sulphur at between 320°C and 400°C produce various combinations of covellite, nukundamite (Cu 5,5 FeS 6,5, and pyrite depending on the sulphur content of the products.If all the contained copper is transferred to covellite, and iron to pyrite, at least 95% of the copper can be leached by ferric chloride with

Ferric chloride leaching of chalcopyrite: Synergetic ...

In order to leach chalcopyrite and chalcocite under atmospheric or high pressure leaching conditions in sulfate or chloride medium, ferric and copper ions,

Leaching of chalcopyrite with ferric ion. Part I: General ...

Aug 01, 2008  Sullivan concluded that ferric chloride is a better chalcopyrite leaching agent than ferric sulphate and that the effect was more marked at high temperatures. Dutrizac et al. (1969) found that, in a temperature range between 50 and 100 °C, the chalcopyrite leaching rate was linear in chloride medium and parabolic in sulphate medium.

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate-sulfuric acid [9], hydrochloric acid [10], and sodium chloride-sulfuric acid [11], among others [10]. The slow copper from chalcopyrite dissolution has been attributed to the formation of a

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 result of an increase in reaction surface area.

A New Approach for Cu and Fe/Fe x B Production from ...

Nov 23, 2020  Haver FP, Wong MM (1971) Recovery of copper, iron, and sulfur from chalcopyrite concentrate using a ferric chloride leach. J Met 23:25–29. CAS Google Scholar 6. Olvera OG, Rebolledo M, Asselin E (2016) Atmospheric ferric sulfate leaching of chalcopyrite: thermodynamics, kinetics and electrochemistry. ...

Determining the Chalcopyrite Leaching Method Using Ozone ...

In the ozone and ferric chloride test, the recovery did not produce better results, they were similar to the best chlorine test. The test in which only ozone was used as an oxidizing agent for chalcopyrite showed better results compared to the chloride leaching with

Study of chalcopyrite leaching from a copper concentrate ...

Study of chalcopyrite leaching from a copper concentrate with hydrogen peroxide in aqueous ethylene glycol media Ángel Ruiz-Sánchez, Gretchen T. Lapidus⁎ Universidad Autónoma Metropolitana – Iztapalapa, Depto. Ingeniería de Procesos e Hidráulica, San Rafael Atlixco 186, Col. Vicentina, C.P.09340, México D.F., Mexico article info abstract

Leaching of Copper Sulphides - SAIMM

POX in a copper heap leach circuit. Figure 2. Simplified ferric leaching flowsheet. Figure 3. Copper chloride leach process. Leaching Chemistry As outlined earlier, the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the

Chloride leaching of chalcopyrite Request PDF

Copper leaching from chalcopyrite concentrate in ferric and cupric chloride system was investigated using a two-stage countercurrent leach circuit

Chalcopyrite Leaching in Acidic Chloride Solution without ...

Abstract: Chalcopyrite leaching in acidic chloride solution with-out sulphates. The effect of dissolved oxygen and ferrous/ferric/cu-pric ions in solution on the leaching behavior of chalcopyrite and the phenomenology of the passivating layer formation on the chalcopyrite surface in an aqueous acidic chlorinated medium with dissolved oxy-

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

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.

(PDF) Copper Leaching from Nanoparticles of Chalcopyrite ...

A method to recover copper and elemental sulfur from chalcopyrite concentrate, using a ferric chloride leach, CuFeS//2 plus 3FeCl//3 yields CuCl plus 4FeCl//2 plus 2S, was reported by the Federal ...

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate-sulfuric acid [9], hydrochloric acid [10], and sodium chloride-sulfuric acid [11], among others [10]. The slow copper from chalcopyrite dissolution has been attributed to

Chloride leaching of chalcopyrite Request PDF

Copper leaching from chalcopyrite concentrate in ferric and cupric chloride system was investigated using a two-stage countercurrent leach circuit under a nitrogen atmosphere at 97 degrees C to ...

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

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

(PDF) Leaching of chalcopyrite with ferric ion. Part II ...

Also, we cannot rule out an initial reduction of chalcopyrite (reaction (3)), as proposed by Hiroyoshi et al. (2001), followed by oxidation of chalcocite to covellite by ferric sulphate through the Table 3 formation of copper-deficient intermediate products, as reported by EDS microanalysis of chalcopyrite leaching residues at 68 °C, [Fe ...

Leaching of copper concentrates - University of Arizona

and sulfate ions, Ferric ion results from the acidic leaching of any iron-containing material. It may be a minor problem, as in leaching high grade chalcocite, or a very major problem, as in leaching chalcopyrite. While ferric ion is not a major problem in basic leaching, the inability of

Chalcopyrite Leaching in Acidic Chloride Solution without ...

Abstract: Chalcopyrite leaching in acidic chloride solution with-out sulphates. The effect of dissolved oxygen and ferrous/ferric/cu-pric ions in solution on the leaching behavior of chalcopyrite and the phenomenology of the passivating layer formation on the chalcopyrite surface in an aqueous acidic chlorinated medium with dissolved oxy-

Study of chalcopyrite leaching from a copper concentrate ...

Study of chalcopyrite leaching from a copper concentrate with hydrogen peroxide in aqueous ethylene glycol media Ángel Ruiz-Sánchez, Gretchen T. Lapidus⁎ Universidad Autónoma Metropolitana – Iztapalapa, Depto. Ingeniería de Procesos e Hidráulica, San Rafael Atlixco 186, Col. Vicentina, C.P.09340, México D.F., Mexico article info abstract

Leaching of Copper Sulphides - SAIMM

POX in a copper heap leach circuit. Figure 2. Simplified ferric leaching flowsheet. Figure 3. Copper chloride leach process. Leaching Chemistry As outlined earlier, the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the

Leaching of chalcopyrite in cupric chloride solution ...

Perceived advantages of chloride systems are the higher solubilities of copper and iron, the ease of ferrous ion oxidation and faster leaching kinetics of chalcopyrite compared with ferric sulfate ...

Recover Copper by Leaching Sulfidation-Partitioned ...

Ferric Chloride Leaching. Because of the demonstrated efficacy of FeCl3 as a leachant for CuFeS2, the most stable of the copper sulfides (because of its face-centered tetragonal structure), FeCl3 was a likely candidate to selectively remove Cu from the simple sulfides produced as reaction products during the sulfidization of CuFeS2 concentrate.

The leaching of chalcopyrite with ferric sulfate ...

The leaching kinetics of natural chalcopyrite crystals with ferric sulfate was studied. The morphology of the leached chalcopyrite and the electrochemical properties of chalcopyrite electrodes also were investigated. The leaching of chalcopyrite showed parabolic-like

(PDF) Leaching of chalcopyrite with ferric ion. Part I ...

The leaching of chalcopyrite with ferric sulfate. much a matter of debate, it is unanimously agreed that the leaching Metall. Trans. B 18B, 489–496. Please cite this article as: Córdoba, E.M., et al., Leaching of chalcopyrite with ferric ion.