ferric chloride leaching of copper from chalcopyrite muly

Ferric Chloride Leaching Of Copper From Chalpyrite

Copper leaching from chalcopyrite concentrate in 1 Introduction Ferric chloride and/or cupric chloride leaching processes have been extensively studied to treat sulfide concentrates of copper, lead and zinc (Peters, 1977, Dutrizac, 1990, Dutrizac, 1992, O’Malley and Liddell, 1987)Chloride leaching has several advantages for hydrometallurgical processes, with respect to sulfate systems, in ...

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Ferric Chloride Leaching Of Copper From Chalcopyrite

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

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Ferric chloride leaching of sulphidized chalcopyrite ...

1983-3-1  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 ...

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Ferric chloride leaching of chalcopyrite: Synergetic ...

2008-3-1  This work presents a study of the leaching of chalcopyrite in acidic ferric chloride. Two chalcopyrite samples (natural chalcopyrite crystal and chalc

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

2008-8-1  Chronologically, Traill and McClelland (1926) were the first to study the dissolution of chalcopyrite with concentrated ferric chloride (70 g/L) at high temperature (95 °C); they obtained a copper yield of 90% after 5 h of leaching and only 60–70% of Fe, probably because it hydrolysed and precipitated during the process.

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Chloride leaching of chalcopyrite - ScienceDirect

2007-12-1  Two new process flowsheets have been developed which combine chloride leaching of copper from chalcopyrite with solvent extraction, to selectively transfer copper to a conventional sulfate electrowinning circuit. Chloride leaching with copper (II) as oxidant offers significant advantages for copper including increased solubility and increased rates ...

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OPTIMIZATION OF FERRIC CHLORIDE LEACHING

2020-7-7  extraction process of copper from chalcopyrite concentrate statistically. A series of experiments involving leaching of copper by ferric chloride in a hydrochloric acidic medium were conducted. Process optimization of the experimental data was performed via statistical analysis. Analysis of variance (ANOVA) technique

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Leaching of Primary Copper Sulfide Ore in Chloride

2018-7-25  Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate-sulfuric acid, hydrochloric acid, and sodium chloride-sulfuric acid, among others. The slow copper from chalcopyrite

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Ferric and Cupric Chloride Leaching of Valuable Metals ...

2019-9-30  Ferric and Cupric Chloride Leaching of Valuable Metals from Process Residues Proceedings of EMC 2019 825 of copper could be extracted into the solution. On the contrary, dissolution of copper decreased when the oxidant concentration increased up to 50 g/L in cupric chloride leaching, and copper

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Leaching of copper concentrates - University of Arizona

2020-4-2  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 basic leaches

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Ferric Chloride Leaching Of Copper From Chalpyrite

Copper leaching from chalcopyrite concentrate in 1 Introduction Ferric chloride and/or cupric chloride leaching processes have been extensively studied to treat sulfide concentrates of copper, lead and zinc (Peters, 1977, Dutrizac, 1990, Dutrizac, 1992, O’Malley and Liddell, 1987)Chloride leaching has several advantages for hydrometallurgical processes, with respect to sulfate systems, in ...

More

Ferric chloride leaching of chalcopyrite: Synergetic ...

2008-3-1  This work presents a study of the leaching of chalcopyrite in acidic ferric chloride. Two chalcopyrite samples (natural chalcopyrite crystal and chalc

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Leaching of Primary Copper Sulfide Ore in Chloride

2018-7-25  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

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Ferric Chloride Leaching - 911 Metallurgist

2018-10-15  Extractions of copper, zinc, and silver were higher than those obtained in bench-scale research, in which better control of leaching time was possible. 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

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Ferric and Cupric Chloride Leaching of Valuable Metals ...

2019-9-30  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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A review of chloride assisted copper sulfide leaching by ...

2016-10-7  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

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Leaching of Copper Sulphides - SAIMM

2016-6-8  oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy on the choice of processing is discussed as well as some of the unit processes used. Additionally, possible benefits that a hydrometallurgical process may offer over an ... bornite and chalcopyrite (Cu 5 FeS 4 and CuFeS 2, respectively) as well ...

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Chloride heap leaching - BHP Billiton SA Limited

The invention claimed is: 1. A hydrometallurgical method of recovering copper from a material, in a heap, that contains a copper sulphide mineral which contains at least chalcopyrite comprising leaching the material in an acidic chloride solution or a mixed chloride/sulphate solution in the presence of dissolved oxygen and maintaining the mineral's surface potential within a range of 550 mV ...

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The development of an effective for heap ...

2018-3-16  Figure 3. The effect of temperature on chalcopyrite leaching in ferric chloride over leaching time (mins) (Al-Harasheh, et al., 2008). ..... 12 Figure 4. Chalcopyrite dissolution of four different variaties at pH 1 (solid) and pH 1.5

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Leaching of Primary Copper Sulfide Ore in Chloride

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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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

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Ferric Chloride Leaching - 911 Metallurgist

2018-10-15  Extractions of copper, zinc, and silver were higher than those obtained in bench-scale research, in which better control of leaching time was possible. 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

More

A review of chloride assisted copper sulfide leaching by ...

2016-10-7  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

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Cupric and Chloride Ions: Leaching of Chalcopyrite ...

2019-10-18  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 ions to form complexes is crucial.

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COPPER HYDROMETALLURGY AND EXTRACTION FROM

Chloride and its compounds, including metal chlorides, are effective oxidants. Ferric chloride and cupric chloride oxidise many materials rapidly and can be generated readily by electrolysis or oxidation with chlorine. For rapid and complete leaching of copper sulphides, and chalcopyrite in particular, strong oxidising conditions are necessary.

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

2020-11-23  Chalcopyrite (CuFeS 2) is the most abundant copper mineral in nature and accounts for 70% of the known copper reserves.While chalcopyrite ore includes a significant amount of Cu, Fe, and sulfur (S), it can also contain a small amount of gold, nickel, cobalt, and platinum group metals (PGMs) [1, 2].Chalcopyrite

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The development of an effective for heap ...

2018-3-16  Figure 3. The effect of temperature on chalcopyrite leaching in ferric chloride over leaching time (mins) (Al-Harasheh, et al., 2008). ..... 12 Figure 4. Chalcopyrite dissolution of four different variaties at pH 1 (solid) and pH 1.5

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Leaching of Primary Copper Sulfide Ore in Chloride

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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Solvometallurgical process for extraction of copper

Leaching of chalcopyrite Leaching of copper from chalcopyrite was first studied with different solvents and oxidizing agents at 60 °C. The following organic solvents were used for chalcopyrite leaching: ethanol (EtOH), propylene glycol (PG) and ethylene glycol (EG) ().The solvent has a significant effect on the leaching efficiency of iron and copper

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Improving of copper extraction from chalcopyrite by using ...

2018-5-5  MAURICE D, HAWK J A. Ferric chloride leaching of mechanically activated chalcopyrite [J]. Hydrometallurgy, 1998, 49: 103–123. Article Google Scholar [20] ACHİMOVİCOV M, BALAZ P, BRİANCİN J. The influence of mechanical activation of

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Leaching of Copper Sulphides - saimm.org.za

2016-6-8  oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy on the choice of processing is discussed as well as some of the unit processes used. Additionally, possible benefits that a hydrometallurgical process may offer over an ... bornite and chalcopyrite (Cu 5 FeS 4 and CuFeS 2, respectively) as well ...

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chalcopyrite milling operation

Simultaneous autogenous milling and ferric chloride leaching of chalcopyrite. Author links open overlay panel D. Maurice J.A. Hawk. Show more. ... In other words, the nantokite seems to represent an intermediate product as a result of the simultaneous autogenous milling and leaching operation, ...

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socolar

With a focus on using seawater for heap leaching, we investigated and modelled the kinetics of chalcocite leaching with ferric chloride. To this end, a series of leaching tests were carried out in jacketed reactors under fully controlled pH and solution potential at ambient temperature using

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leaching of chalcopyrite - tcbasdongen.nl

Chalcopyrite is the most important copper mineral source and also a refractory mineral for leaching. Several processing routes have been proposed to overcome the environmental problems related to copper extraction from chalcopyrite. In this study, the leaching of chalcopyrite has been investigated with a new reagent sodium hypochlorite (NaOCl).

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leaching of chalcopyrite

The chalcopyrite leaching residue used in this study was produced from a chalcopyrite concentrate leaching similar to the leaching circuit of the Cuprex process [9]. The leaching conditions are: two-stage countercurrent leaching with 6 hours of retention time on each stage, leaching temperature of 95oC, and 2.0 moles per liter of ferric ...

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Chalcopyrite Briquette Machine - duurzaamfaam.nl

Ferric Chloride Leaching Of Copper From Chalcopyrite. 2020-7-8In addition numerous studies showed that leaching of chalcopyrite in chloride media results in higher copper extractions than in sulfate media 162324 The main reasons are the formation of chloride complexes which change the electrochemical behavior of chalcopyrite passivation andor ...

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chalcopyrite leaching tank material」

2016-10-10  First Refractory Copper Leaching Using Albion ProcessTM o Sable received a parcel of sulphide copper concentrate containing approximately: 30% Copper predominantly Chalcopyrite, Bornite and lesser amounts of Chalcocite 19% Total Sulphur 14% Iron o Being originally designed as whole ore leach tanks, their sizing was excessive compared to the

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pn vi cac: Topics by Science.gov

Fowler, P.; Muly, E. C. 1971-01-01. A cold cathode emitter of hot electrons for use as a source of electrons in vacuum gauges and mass spectrometers was developed using standard Norton electroluminescent silicon carbide p-n diodes operated under reverse bias conditions. Continued development including variations in the geometry of these ...

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