Ferric Chloride Leaching of Copper from Chalcopyrite
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Ferric Chloride Leaching of Copper from Chalcopyrite

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.

Ferric chloride leaching of chalcopyrite: Synergetic ...

The effects of stirring speed and temperature were investigated. It was found that agitation had a negative effect on copper recovery from chalcopyrite during the leaching process. This is explained by the fact that cupric chloride complexes are formed during the leaching process where cupric ion is considered as a stronger oxidant than ferric ion.

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 ...

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%.

Ferric Chloride Leaching of Chalcopyrite Concentrate

Jan 02, 2021 · The leach solution contains approximately 36 percent ferric chloride and about 1 percent hydrochloric acid. During leaching about 99 percent of the copper, 84 percent of the iron, 90 percent of the calcium, and 96 percent of the silver are dissolved. The representative reaction for dissolving chalcopyrite

Ferric chloride leaching of chalcopyrite: Synergetic ...

The effects of stirring speed and temperature were investigated. It was found that agitation had a negative effect on copper recovery from chalcopyrite during the leaching process. This is explained by the fact that cupric chloride complexes are formed during the leaching process where cupric ion is considered as a stronger oxidant than ferric ion.

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

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%.

Leaching of chalcopyrite concentrate with ferric chloride

The leaching of natural chalcopyrite was studied in both ferric chloride and ferric sulfate solutions. The morphology of leaching was studied by using a single chalcopyrite crystal and it appeared ...

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

US8070851B2 - 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/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.

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 Primary Copper Sulfide Ore in Chloride-Ferrous ...

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 ...

(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 Velásquez Yévenes Metallurgical Engineer. By Gustavo Quezada. A Review on Novel Techniques for Chalcopyrite Ore Processing.

business plan for copper leaching

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.

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, Havlík, Škrobian et ...

Cu Leaching Using Regenerated Ferric Sulphate

mixtures during the leach (to regenerate in-situ the ferric needed to extract the copper) allows similar good extractions (>95% Cu) to be achieved with only 10 g/L iron in solution, as indicated in Table III. Such leach solutions would be much easier to process. Table III - Summary Results of Regenerated Ferric Sulphate Leach (10% solids, 2% SO

Efficient Synchronous Extraction of Nickel, Copper, and ...

Jun 18, 2020 · Synchronous extractions of nickel, copper, and cobalt by selective chlorinating roasting and water leaching to low–grade nickel–copper matte. Separation and Purification Technology 195 ,

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

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 ...

(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 ...

Oxidative Leaching of Chalcopyrite by Cupric Ion in ...

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 ...

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

Effect of Chalcopyrite Leaching Additives

Mar 04, 2018 · Previous U.S. Bureau of Mines (USBM) research on the leaching of chalcopyrite with ferric sulfate [Fe2(SO4)3] demonstrates that surfactant additions enhance chalcopyrite (CuFeS2) leaching and that surfactant selection has a significant impact on the initial leaching rate. Additions of chloride ion (Cl-) are also known to enhance chalcopyrite leaching, although a review of the

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).

business plan for copper leaching

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.

The role of sodium chloride on surface properties of ...

systems relies on the high solubility of both copper and ferric iron in these systems as well as the easiness of ferric ion regeneration. In addition, chalcopyrite leach-ing with ferric chloride shows faster kinetics than ferric sulphate solutions. These studies have also suggested that the sulphur formed as reaction product is more

Cu Leaching Using Regenerated Ferric Sulphate

mixtures during the leach (to regenerate in-situ the ferric needed to extract the copper) allows similar good extractions (>95% Cu) to be achieved with only 10 g/L iron in solution, as indicated in Table III. Such leach solutions would be much easier to process. Table III - Summary Results of Regenerated Ferric Sulphate Leach (10% solids, 2% SO

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.

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 ...

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

Leaching of chalcopyrite with ferric ion. Part II: Effect of redox potential. Antonio Ballester. Related Papers. Leaching of chalcopyrite with ferric ion. Part I: General aspects ... THE KINETICS OF THE DISSOLUTION OF CHALCOPYRITE IN CHLORIDE MEDIA Lilian De Lourdes Velásquez Yévenes Metallurgical Engineer.

(PDF) Galvanic Effect of Pyrite on Chalcopyrite Leaching ...

Effect of initial ferrous ion addition on the iron dissolved leaching solution does increase the leaching rate of copper from chalcopyrite in H2SO4-NaCl-O2 solutions. Chalcopyrite from the chalcopyrite concentrate; however, the increment 10.6 mm, 0.2 mol=L of H2SO4, 1 mol=L of NaCl, 1000 rpm, at short times is not as large as that obtained with ...

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