copper sulphide leaching process

Leaching of Copper Sulphides - SAIMM

2016-6-8  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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(PDF) Leaching of Copper Sulphides - researchgate

leaching of all copper sulphide minerals, such a s chalcopyrite, bornite, c halcocite, covell ite and digenite ( Valkama, 2013 ). These leach conditions have delivered high recoveries of

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Process for leaching copper from copper sulfide using ...

1997-9-24  The invention is directed to a process for leaching copper by a bacteria leaching process using ores containing copper sulfide, wherein copper is leached with an acid leaching solution having a redox potential of from 550 to 750 mV, based on a silver/silver chloride electrode as a standard.

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What is the best method for sulfide copper leaching?

Copper sulphides normally concentrates obtained by flotation, were leached with acidic ferric chloride solutions at temperatures above 90 o C maintaining molar ratio for the time varying

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Covellinisation of copper sulphide minerals under pressure ...

2013-5-1  The formation of copper sulphide (covellite) appeared to be a significant step in the examined pressure leaching process. Copper present in the flotation concentrate was observed to be solubilised in the leaching solution only after the conversion of all copper sulphide minerals into the covellite phase.

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Pressure leaching of copper sulphide from nickel refining ...

2021-5-1  Most refineries that process nickel matte in sulphuric acid solution selectively leach nickel over copper producing a small quantity of copper sulphide rich leach residue. During hydrometallurgical nickel processing, one of the targets is to purify the solution to remove copper.

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Sulphide Leaching - Mineral Processing Metallurgy

2015-6-24  Concentrated sulphuric acid: Most sulphides are oxidized to sulphate. From the sulphated ore, all of the zinc, copper and iron can be leached with water while lead, silver, gold and antimony will remain in the insoluble residue. Leaching of an Arsenical Copper Sulfide

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Acid leaching of oxide–sulfide copper ore prior the ...

2015-11-26  Direct leaching process of copper oxides or complex ores attracts considerable scientific and engineering attention, which plays an important role in the sus-tainable development of copper industry. Sulphuric, hydrochloric and nitric acid, as well as the ammonia are usually used as the leaching agents in a various copper ore leaching processes [2–12]. Copper oxides easily react with sulphuric acid solutions at the room tempe-rature producing Cu2+ in the aqueous phase. Energy consumption can also become an important factor of economy when the leaching process occurs, consider-ing the heating and agitation of the input suspension. The kinetics of copper minerals leaching was recently published by several authors, for example Sokić at al. kinetics of copper leaching from chalcopyrite, Bingol and Canbazoglu kinetics of copper leaching from mala-chite [10,11], while Quast has published the kinetics of copper leaching from atacamite. Also some res-earchers studied the processing of copper

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Direct Leaching of sulfides: Chemistry and applications ...

The sulfide minerals associated with copper, nickel, zinc, lead, and molybdenum concentrates are described according to their thermodynamic stability zones on Eh-pH diagrams. From these zones, the chemistry associated with various thermodynamically feasible decomposition paths is discussed, and process developments associated with the most favorable decomposition paths are briefly reviewed.

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Hydromet Group - Hydrometallurgy at the University of ...

Sherritt process for nickel and cobalt sulphide pressure leaching. This technology was developed as an alternative to smelting for the Lyn Lake, Manitoba deposit by Dr. Frank Forward in collaboration with Sherritt Gordon Mines Ltd. It was the first commercial application of pressure leaching for nickel sulphide concentrates.

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Process for leaching copper from copper sulfide using ...

1997-9-24  The invention is directed to a process for leaching copper by a bacteria leaching process using ores containing copper sulfide, wherein copper is leached with an acid leaching solution having a redox potential of from 550 to 750 mV, based on a silver/silver chloride electrode as a standard.

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INVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN

2019-11-19  process for treating a lead-refining by-product, copper–lead sulphide matte, using an oxygenated acid solution containing both sulphate and chloride ions. The leaching process with oxygen takes place at 85oC, while copper dissolves and lead remains in the solid residue as lead sulphate together with elemental sulphur. The cupric ions are

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What is the best method for sulfide copper leaching?

Bacteria Heap Leaching and Oxidative bacterial heap leaching two methods that apply for low grade copper sulfide leaching. Is the better you done and detailed search in Geo Coat processes and etc ...

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

2016-10-7  process uses copper(II) chloride in strong brine (4.3 mol.dm-3 NaCl) to leach chalcopyrite concentrates at pH 1.5-2.5 and near boiling point of water (Lundstrom et al., 2005). New process flowsheets have been developed for chalcopyrite concentrates which include leaching in acidic calcium chloride solutions (~2 mol.dm-3 Cl-) followed

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(PDF) A comprehensive model for copper sulphide heap ...

A comprehensive model for copper sulphide heap leaching. Download. Related Papers. Computational modeling of reactive multi-phase flows in porous media: Applications to metals extraction and environmental recovery processes. By Mark Cross

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Leaching of copper concentrates - University of Arizona

2020-4-2  copper oxides have been in common use for some time. Prior to the development of the Sherritt-Gordon process for nickel and cobalt in which copper is recovered as high grade copper sulfide, copper sulfides were economically recovered in a hydrometallurgical process only during the leaching of waste dumps. . Need for Hydrometallurgical Processes

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Recovery of Copper from Copper Sulfide Concentrate by ...

2015-2-16  fides and copper sulfide for med copper sulfate, whereas iron sulfide converted mostly to hematite at 500˚C [9]. In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydro-metallurgical methods has been used for the recovery of copper from a copper sulfide

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The cuprex metal extraction process: Recovering copper ...

The Cuprex™ metal extraction process produces cathode-grade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel steps to overcome the major problems associated with earlier chloride-based processes, including mild leaching conditions using ferric chloride as leachant and solvent extraction of copper usinga ...

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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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Hydromet Group - Hydrometallurgy at the University of ...

Sherritt process for nickel and cobalt sulphide pressure leaching. This technology was developed as an alternative to smelting for the Lyn Lake, Manitoba deposit by Dr. Frank Forward in collaboration with Sherritt Gordon Mines Ltd. It was the first commercial application of pressure leaching for nickel sulphide concentrates.

More

Process for leaching copper from copper sulfide using ...

1997-9-24  The invention is directed to a process for leaching copper by a bacteria leaching process using ores containing copper sulfide, wherein copper is leached with an acid leaching solution having a redox potential of from 550 to 750 mV, based on a silver/silver chloride electrode as a standard.

More

INVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN

2019-11-19  process for treating a lead-refining by-product, copper–lead sulphide matte, using an oxygenated acid solution containing both sulphate and chloride ions. The leaching process with oxygen takes place at 85oC, while copper dissolves and lead remains in the solid residue as lead sulphate together with elemental sulphur. The cupric ions are

More

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

2016-10-7  process uses copper(II) chloride in strong brine (4.3 mol.dm-3 NaCl) to leach chalcopyrite concentrates at pH 1.5-2.5 and near boiling point of water (Lundstrom et al., 2005). New process flowsheets have been developed for chalcopyrite concentrates which include leaching in acidic calcium chloride solutions (~2 mol.dm-3 Cl-) followed

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First Chalcopyrite Copper Concentrate Leaching using ...

2018-7-20  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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The method of underground leaching copper sulfide ores

To ensure the required completeness and rate of leaching of copper and zinc from sulfide mineral raw materials we recommended to maintain the concentration of Fe 3+ in the range of 0.5-30 g/l, preferably 5-15 g/L. it is possible to provide an almost complete recovery of copper from bornite and chalcocite in a relatively short time process. When ...

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Advances in high-temperature heap leaching of refractory ...

2013-1-21  Advances in high-temperature heap leaching of refractory copper sulphide ores by S.W. Robertson*, P.J. van Staden*, and A. Seyedbagheri* Synopsis Acid heap leaching has been extensively applied to the processing of copper oxide ores, with recovery of copper by solvent extraction and electrowinning. Heap leaching has also been extended to the

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Recovery of Copper from Copper Sulfide Concentrate by ...

2015-2-16  fides and copper sulfide for med copper sulfate, whereas iron sulfide converted mostly to hematite at 500˚C [9]. In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydro-metallurgical methods has been used for the recovery of copper from a copper sulfide

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SART for copper control in cyanide heap leaching

2013-1-21  sulphide precipitation such as the sulphidization, acidification, recycling, and thickening (SART) process. SART involves acidifi-cation with addition of soluble sulphide, separation of the resulting copper sulphide precipitate, and addition of lime to re-establish alkalinity prior to returning the solution to the leaching process,

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Application of SART to Heap Leaching of Gold-Copper

cyanide soluble copper as a relatively pure copper sulphide. The process also allows effective recovery and recycle of cyanide back to the heap leach operation. This paper reviews the SART process chemistry and presents a summary of SART bench-scale and pilot plant . testwork completed by Kinross.

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The Case for Glycine Heap Leaching -

2020-12-11  GlyLeach offers the opportunity to co-leach copper and gold using a combined alkaline glycine-cyanide solution. Metal recovery is by conventional SX for copper and carbon adsorpt ion for gold. Project Target 4 – Primary copper sulphide. Slow leaching minerals such as chalcopyrite present a further opportunity. There has never been an efficient

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