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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.

  • Published in: International Journal of Network Management · 2012Authors: Ali AhmadiAffiliation: Isfahan University of TechnologyAbout: Leaching · Copper extraction techniques · FERRIC IRONGet Price

Ferric Chloride Leaching of a Copper Concentrate - AusIMM

The recovery of copper from a flotation concentrate using ferric chloride leaching has been investigated. The concentrate from the Horseshoe Lights Mine near Meekatharra, Western Australia, contained mainly digenite, pyrite and talc minerals. Over 95 per cent of the copper was dissolved in an acidified ferric chloride solution in one hour at 70°C and ambient...

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Lead leaching and faucet corrosion in PVC home plumbing

Jun 02, 2008 · Scientists in ia are reporting that home plumbing systems constructed with polyvinyl chloride (PVC) plastic pipes may be more susceptible to leaching of lead and copper .

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Chalcopyrite Leaching in Acidic Chloride Solution without ...

sulphate, [13], where the amount of copper recovered with 0.1 M ferrous sulphate (pH 1) is five times greater than that ob-tained with ferric sulphate. The objective of the present research is to contribute new knowledge on copper leaching from chalcopyrite ore, in a chlo - rinated acid medium without sulphate, under weakly oxidizing

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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). Additional work has been done to improve the recovery of sulfur ...

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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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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.

Pyrite Leaching Behaviour under CESL Process Conditions

specific to CESL's mixed sulphate-chloride system operating at 150ºC. The CESL Copper Process typically comprises the steps of concentrate regrinding, the oxidation of sulphide concentrates at elevated pressure and temperature in the presence of catalytic chloride ions, leach residue

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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.

  • Published in: International Journal of Network Management · 2012Authors: Ali AhmadiAffiliation: Isfahan University of TechnologyAbout: Leaching · Copper extraction techniques · FERRIC IRON[PDF]Get Price

Leaching of Copper Sulphides - saimm

copper sulphide leaching options as alternatives to the more conventional pyrometallurgical processing route of copper sulphides. Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy

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Leaching and recovery of platinum group metals from UG .

Leaching and recovery of platinum group metals from UG-2 concentrates yields were not good (less than 40 per cent). Platinum leaching was particularly poor with cyanide (ambient temperature). A HCl/chlorine leach on untreated material had the same effect as a cyanide leach with a nitric acid pre-leach,

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Recovery of metals from chloride leach solutions of waste ...

Quinet, Proost &Van Lierde (2005) tested ion exchange, activated carbon adsorption and cementation (Cu and Al) methods for the recovery of palladium, silver, gold and copper from chloride leach solutions (HCl-H2O2) of WPCB of cell phones.

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Ferric and Cupric Chloride Leaching of Valuable Metals ...

For copper, the extractions were higher in chloride leaching (75 – 100 %) whereas cyanide could dissolve 50 % of copper. Extraction of nickel and zinc were slightly higher in ferric chloride leaching compared to cupric chloride leaching, but cobalt extraction was similar in both chloride leaching .

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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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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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Leaching of Trace Amounts of Metals from Flotation ...

Oct 25, 2018 · With decreasing ore grades, the tailings of mining operations are becoming of increasing interest as metal-containing secondary raw materials. The objective of the current work was to investigate chloride leaching of gold, copper, cobalt, nickel, and zinc present in the flotation tailings.

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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.

Get Price

Oxygen Leaching of Copper-Lead Matte in Acidic Chloride ...

A hydrometallurgical process was developed for recovery of copper from copper-lead matte formed as an intermediate product at the BHAS lead smelter at Port Pirie. A plant utilizing this process was commissioned in 1984. The leach step involves oxidation of the copper-lead matte in an oxygenated acidic chloride-sulphate leachant. The results of laboratory scale testwork...

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Leaching of Copper from Metal Powders Mechanically ...

The low copper extraction within experimental conditions may be attributed to the facts that the metal copper was dissolved in the presence of oxygen of acidic chloride leaching solutions14. With the addition of H 2O 2 into leaching solutions, the copper extraction increased significantly to 60.8% in 90 min with the presence of 0.05 mol/L H 2O

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Heap leaching - Wikipedia

In 2011 leaching, both heap leaching and in-situ leaching, produced 3.4 million metric tons of copper, 22 percent of world production. The largest copper heap leach operations are in Chile, Peru, and the southwestern United States. Although heap leaching is a low cost-process, it .

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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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