chloride leaching copper

Leaching of bornite in acidified ferric chloride solutions

Leaching of bornite in acidified ferric chloride solutions

Leaching of Bornite in Acidified Ferric Chloride Solutions B. PESIC and F. A. OLSON In an acidified ferric chloride solution, bornite leaches in two stages of reaction with the first being

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CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

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

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

This study was conducted to develop a novel process for copper recovery from chalcopyrite by chloride leaching, simultaneous cuprous oxidation and cupric solvent extraction to transfer copper to a conventional sulfate electrowinning circuit, and hematite precipitation to reject iron.

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Chloride heap leaching   BHP Billiton SA Limited

Chloride heap leaching BHP Billiton SA Limited

Dec 06, 20110183;32;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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WO2007134343A2   Chloride heap leaching   Google Patents

WO2007134343A2 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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(PDF) Leaching of chalcopyrite in cupric chloride solution

(PDF) Leaching of chalcopyrite in cupric chloride solution

The reasons for using of chlorine ions can be listed as follows to provide high redox potential, catalytic effect and, to generate soluble copper compounds.

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Cupric chloride leaching of model sulfur compounds for

Cupric chloride leaching of model sulfur compounds for

Cupric Chloride Leaching of Model Sulfur Compounds for Simple Copper Ore Concentrates GEORGE W. McDONALD and STANLEY H. LANGER

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CA2651516C   Chloride heap leaching   Google Patents

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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Effect of Pretreatment on Leaching Primary Copper Sulfide

Effect of Pretreatment on Leaching Primary Copper Sulfide

The chloride medium increases the solubility of copper, iron and other metals. Redox properties are also enhanced because cuprous and cupric ions are stabilized as chloro complexes, in which the redox couple, Cu(I)/Cu(II) promotes sulde oxidation.

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Effect of Chloride Ions on Leaching Rate of Chalcopyrite

Effect of Chloride Ions on Leaching Rate of Chalcopyrite

Hiroyoshi and co workers reported that the leaching rate of chalcopyrite could be accelerated by the addition of silver ions. the high leaching rate zone becomes broader and the critical potential (Ec) increases as the chloride concentration increases. cuprous ion species such as

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Copper Chloride Leaching Process   Outotec

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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The Leaching of Copper Oxide Ore in Ammonium Chloride Solution

The Leaching of Copper Oxide Ore in Ammonium Chloride Solution

In this study, the leaching effect of copper oxide ore was investigated using ammonium chloride solution as leaching agent. The effects of temperature, concentration of ammonium chloride, average particle size and stirring speed on the leaching of copper oxide ore were investigated.

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Ferric Chloride Leaching   911metallurgist

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 copper specification for

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Chloride as an Alternative to Cyanide   sgs

Chloride as an Alternative to Cyanide sgs

(~5 10 g/L) of sodium chloride to the autoclave. the copper leaching conditions, cyanide consumption can be prohibitively high unless soluble copper ions are very efficiently washed from the solids and other cyanide consuming species (such as elemental sulphur) are efficiently

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Cu Leaching Using Regenerated Ferric Sulphate   sgs

Cu Leaching Using Regenerated Ferric Sulphate sgs

LEACHING OF SECONDARY COPPER MINERALS USING . REGENERATED FERRIC SULPHATE. C.J. FERRON SGS. ABSTRACT . Secondary copper minerals such as chalcocite (Cu. 2. chloride, has been shown to significantly improve the kinetics

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Iron(III) chloride

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. FeCl 3 + CuCl FeCl 2 + CuCl 2. It also reacts with iron to form iron(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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Pressure Leaching of Copper Concentrates

Pressure Leaching of Copper Concentrates

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

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Chloride leaching of chalcopyrite  Request PDF

Chloride leaching of chalcopyrite Request PDF

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

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Permeation  Leaching   US EPA

Permeation Leaching US EPA

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 or linings2

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Chloride leaching of chalcopyrite   ScienceDirect

Chloride leaching of chalcopyrite ScienceDirect

Chloride leaching with copper(II) as oxidant offers significant advantages for copper including increased solubility and increased rates of leaching. Both process flowsheets were similarly designed with a two stage counter current leach but differ with respect to iron deportment.

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Rric Chloride Leaching Copper From Chalcopyrite

Rric Chloride Leaching Copper From Chalcopyrite

LEACHING OF CHALCOPYRITE (CuFeS nuclear . used as oxidants to leach copper chalcopyrite1'8; it has also been found that chalcopyrite can be treated with sulfur chloride (SC12) for copper re covery.9 These leaching agents, although used with success under certain circumstances, would introduce a prohibitive cost in nuclear under ground mining.

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The leaching of chalcopyrite with ferric chloride

The leaching of chalcopyrite with ferric chloride

The Leaching of Chalcopyrite with Ferric Chloride TETSUJI HIRATO, MAKOTO KINOSHITA, YASUHIRO AWAKURA, and HIROSHI MAJIMA A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to

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Accelerated leaching of gold, silver and copper  gold ores

Accelerated leaching of gold, silver and copper gold ores

to leach copper, silver and gold (and a few other base/precious metals) from their ores, concentrates, tailings, wastes and process intermediates. It is the only known benign alkaline leach

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Improvements in Ferric Chloride Leaching of Chalcopyrite

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 gt; cucl + 4fecl2 + 2s, was reported by the federal Bureau of Mines in 1971 (report of investigations 7474).

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NICKEL MATTE CHLORIDE LEACHING   outotec

NICKEL MATTE CHLORIDE LEACHING outotec

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 Copper is puried from the process solution by solvent extraction, using conventional hydroxyoxime based copper

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Copper leaching from chalcopyrite concentrates  SpringerLink

Copper leaching from chalcopyrite concentrates SpringerLink

Abstract. Chalcopyrite (CuFeS 2) is one of the most abundant copper bearing minerals, which accounts for approximately 70 percent of the worlds known copper reserves.For more than 30 years, a significant number of processes have been developed to leach copper from chalcopyrite concentrates.

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Chloride Leaching of Chalcopyrite  Copper  Iron

Chloride Leaching of Chalcopyrite Copper Iron

Falconbridge Copper Chloride Leaching Project Report. 5th Intl. Liddicoat. pp. A. Solvent extraction (SX) is a known and effective method for selective uptake of copper for transfer to an electrowinning circuit with minimal impurity carry over. 12B. 825848.

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Recent Developments in Copper Hydrometallurgy

Recent Developments in Copper Hydrometallurgy

2 169;2006 Phelps Dodge Corporation Outline Safety Historical context Solution extraction and electrowinning Atmospheric leaching ySecondary sulfides yPrimary sulfides

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Corrosion and Leaching of Copper Tubing Exposed to

Corrosion and Leaching of Copper Tubing Exposed to

The leaching of lead and copper from plumbing materials is a source of metals in drinking water and is a public health concern. This work investigated the influence of free chlorine (HOCl/OCl ) on the level of copper in water in contact with the solid metal, and proposed an oxidation dissolution

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Impact of ChlorideSulfate Mass Ratio (CSMR) Changes on

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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