chloride leaching copper

Iron(III) chloride

Iron(III) chloride is a mild oxidising agent, for example, it is capable of oxidising copper(I) chloride to copper(II) chloride. It is also used as a leaching agent in chloride hydrometallurgy, for example in the production of Si from FeSi (Silgrain process).

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Chloride leaching of chalcopyrite Request PDF

Copper chloride leaching from chalcopyrite and bornite concentrates containing high levels of impurities and minor elements has been studied using a two stage countercurrent leach circuit at 95

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Ferric Chloride Leaching of a Copper Concentrate AusIMM

The optimum conditions for the leaching of copper from the concentrate, within the range of conditions studied were particle size 63 per cent minus 38 µm, a ferric chloride concentration of 1.48 M, a temperature of 70°C, and a stirring speed of 800 rpm.

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Leaching of Copper Sulphides SAIMM

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 autoclave.

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Improvements in Ferric Chloride Leaching of Chalcopyrite

A method to recover copper and elemental sulfur from chalcopyrite concentrate, using a ferric chloride leach, cufes2 + 3fecl3 > cucl + 4fecl2 + 2s, was reported by the federal Bureau of Mines in 1971 (report of investigations 7474).

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CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING

Chloridehypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of FeS at [Fe] = 10 4 M, [S] = 10 M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.

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Pressure Leaching of Copper Concentrates

Pressure Leaching of Copper Concentrates John O. Marsden Senior Vice President Chloride assisted

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Copper Chloride Leaching Process Outotec

Our copper chloride leaching process utilizes our highly effective atmospheric chloride leaching technology, including gold and silver recovery. We have coupled this with world renowned VSF solvent extraction and electrowinning technology to make a process that is especially effective with low grade and impure copper feed materials.

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Lead leaching and faucet corrosion in PVC home plumbing

Lead leaching and faucet corrosion in PVC home plumbing June 2, 2008, Plumbing systems with polyvinyl chloride plastic pipes could be more susceptible than copper pipes to leaching of lead and

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Leaching of Primary Copper Sulfide Ore in Chloride Ferrous

through to other leaching processes, such as the bacterial leaching of gold sulde concentrates, where ferric iron promotes the dissolution of pyrite and arsenopyrite [22]. In addition, numerous studies showed that leaching of chalcopyrite in chloride media results in

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Chloride heap leaching BHP Billiton SA Limited

Dec 06, 2011·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.

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Effect of Pretreatment on Leaching Primary Copper Sulfide

Effect of Pretreatment on Leaching Primary Copper Sulde in Acid Chloride Media Cecilia P. Cerda 1, María E. Taboada 1,2, Nathalie E. Jamett 1, Yousef Ghorbani 3 ID and Pía C. Hernández 1,* ID 1 Departamento de Ingeniería Química y Procesos de Minerales, Universidad de Antofagasta, Avda,

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LEACHING OF CHALCOPYRITE (CuFeS nuclear explosives 2

is also a function of the chloride ion concentration. The advantages of this solvent, if used in Plow share leaching in situ mining technology, is briefly discussed. INTRODUCTION The copper iron sulfide ore, chalcopyrite (CuFeS2), is one of the most abundant sources of copper but is not suitable for copper

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Copper leaching from chalcopyrite concentrates SpringerLink

Copper leaching from chalcopyrite concentrates. Authors; Authors and affiliations; These processes recover copper via hydrometallurgical leaching of the copper component of chalcopyrite concentrates, followed by solvent extraction and electrowinning. Iron, and Sulfur from Chalcopyrite Concentrate Using a Ferric Chloride Leach, J

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NICKEL MATTE CHLORIDE LEACHING outotec

was originally developed for copper recovery. It has since been extended to nickel, zinc, and gold processing. This latest solution, the Outotec Nickel Matte Chloride Leaching Process, is suitable for nickel rening and is a highly exible, calcium chloride based processing route for nickel matte and other nickel containing raw mate rials.

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A Review on Novel Techniques for Chalcopyrite Ore Processing

Al Harahsheh (2008) used ferric chloride leaching of copper from chalcopyrite. The effect of stirring speed and temperature on chalcopyrite leaching were investigated. Agitation was found to have a negative effect on cupric ion, the fact that cupric complexes are formed during the leaching process where the cupric ion is considered as a string

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Bioleaching vs. Chloride Leaching Real Advantages and

Therefore, several technologies have been developed in order to achieve an efficient copper extraction from copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for secondary copper sulfides due to their good results at lab, pilot and industrial scale.

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Outotec Copper Chloride Leaching Process for Malanjkhand

Outotec Copper Chloride Leaching Process utilizes mixed chloride sulphate media in atmospheric leaching conditions to extract copper, silver and gold from copper concentrate.The leaching solution is purified with solvent extraction and copper is recovered

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Cupric Chloride Leaching of Chalcopyrite SpringerLink

In a strong chloride solution the predominant cuprous, cupric, ferrous, and ferric chloride complexes are CuCl32, CuCl+, CuCl2, FeCl2, and FeCl2+ respectively. Cupric Chloride Leaching of Chalcopyrite. Authors; Authors and affiliations; J. P. Wilson J. Kane, and J. Avraamides, The Leaching of Copper from Sulphur Activated

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Copper(II) chloride

Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. Aqueous solution prepared from copper(II) chloride contain a range of copper(II) complexes depending on concentration, temperature, and the presence of additional chloride ions.

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Chloride as an Alternative to Cyanide sgs

CHLORIDE AS AN ALTERNATIVE TO CYANIDE FOR THE. EXTRACTION OF GOLD GOING FULL CIRCLE? ABSTRACT. At the present time, cyanide is the most widely used reagent to extract gold from its ores and concentrates. the copper leaching conditions, cyanide consumption can be prohibitively high unless soluble copper ions are very efficiently washed

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Primary copper sulfides bioleaching vs. chloride leaching

Primary copper sulfides bioleaching vs. chloride leaching Advantages and drawbacks First experimental comparison between bioleaching and chemical chloride leaching technologies with a low grade primary copper sulfide ore. the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for copper

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Lead Leaching And Faucet Corrosion In PVC Home Plumbing

Plumbing systems with polyvinyl chloride plastic pipes could be more susceptible than copper pipes to leaching of lead and copper into drinking water, researchers report.

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Influence of Ferric and Ferrous Iron on Chemical and

leaching tests showed that the addition of iron at low solution redox potentials significantly increased the rate and extent of copper dissolution but when ferric iron was added, despite a higher initial rate of copper dissolution, leaching process stopped.

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Chloride leaching of silver and lead from a solid residue

chloride leaching. An attempt of the application of chloride leaching is described in this paper. The results of chloride leaching of silver and lead from solid residue after non oxidative leaching followed by atmospheric leaching of the Lubin flotation copper

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Ferric Chloride Leaching 911metallurgist

The copper concentration of corroding grade lead must be less than 15 ppm therefore, the copper in the lead chloride should not be more than 20 ppm (Fleck, 1983). As shown in Figure 6, the copper in the leaching solution must be maintained below 20 g/L to meet the

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Copper leaching from chalcopyrite concentrate in Cu(II)/Fe

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 °C to minimize the concentrations of cupric and ferric ions in pregnant leach solution for subsequent copper solvent extraction while maintaining a maximum copper

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Leaching of chalcopyrite in cupric chloride solution

The leaching behavior of copper sulfides in concentrated cupric chloride solution at 95 °C and at ambient pressure was studied in order to scrutinize the leaching behavior of a single bornite and

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Solvent extraction (SX) reagent selection for high

Solvent extraction (SX) reagent selection for high temperature, acid, chloride and Cu PLS at Port In the 1970s the BHAS Research Department developed a process for leaching the copper matte using an acidic chloride/sulphate solution and oxygen. The successful laboratory work The role of chloride in sulphide copper leaching is

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Permeation & Leaching US EPA

leaching. Table 1 Summary of Potential Water Quality Problems Permeation Leaching Increased VOC content of distributed water2 Increased lead and copper levels1 Vinyl Chloride formation2 Increased asbestos levels1 Aesthetic issues (taste, odor, film formation) Increased organic contaminants from PE pipe2 Increased metals levels from cement pipe

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Chalcopyrite Leaching in Acidic Chloride Solution without

chloride, ferric chloride, potassium chloride, cupric chloride, ferrous chloride, etc. The pH was adjusted by adding concen trated hydrochloric acid. Iron and copper ions were added as chlorides and 1 M Na + as NaCl. The additional amount of chlo ride required to reach 1.5 M [Cl ] was added as KCl.

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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.

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Chloride leaching for chalcopyrite UBC Library Open

Chloride leaching offers significant advantages for copper hydrometallurgy including increased solubility, increased rates of leaching and stabilization of Cu(I) through chloride complexation. A mass balance was completed for both models and enabled the determination of recycle leach liquor concentrations of copper and iron species for the

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Impact of ChlorideSulfate Mass Ratio (CSMR) Changes on

Impact of ChlorideSulfate Mass Ratio (CSMR) Changes on Lead Leaching in Potable Water test treatment changes on lead leaching from solder copper couplings Low pH measured at anode (pH 3.3) migrate to the lead anode Lead sulfate is relatively insoluble, while chloride complexes lead and increases lead leaching

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Recover Mercury from Concentrates by Chloride Leaching

Leaching. Cupric chloride leaching followed by copper removal from the solution before electrolysis is a good approach to hydrometallurgical treatment of mercury concentrates. The best method for removing copper from the pregnant solutions was precipitation of a basic salt by pH adjustment.

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Stop Using Ferric Chloride Etchant (A Better Etching

Ferric chloride is a traditional home use circuit board etchant. It's easy enough to come by, and the Ferric by itself is no big environmental problem. However, once you've etched a board with it, you're left with a solution with a bunch of copper chloride in it.

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Recovery of Mercury From Concentrates by Cupric Chloride

Recovery of Mercury From Concentrates by Cupric Chloride Leaching and Aqueous Electrolysis By J. E. Murphy, H. G. Henry, and J. A. Eisele U. S. Department of the Intertor Bureau of Mil hiS Spokane r~Gsearch Center East 315 Montgomery Avenue Spokane, WA 9920Z UNITED STATES DEPARTMENT OF THE INTERIOR

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WO2007134343A2 Chloride heap leaching Google Patents

CHLORIDE HEAP LEACHING. BACKGROUND OF THE INVENTION [0001] This invention relates to a hydrometallurgical method for the recovery of copper from copper sulphide minerals such as bornite, chalcocite, chalcopyrite, covellite and enargite.

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