copper sulphide leaching process
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Leaching of Copper Sulphides - SAIMM
2016-6-8 for copper sulphides. Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. Ferric sulphate leaching and copper chloride leaching are carried out at atmospheric pressure while total pressure oxidation takes place at elevated pressures.
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Leaching of copper(I) sulphide by sulphuric acid
2003-7-1 Sullivan (1933) studied the leaching processes of copper sulphides by acidified ferric sulphate solutions. He showed that chalcocite (Cu 2 S) dissolves in a two-stage process with covellite (CuS) as the solid product formed at the end of the first stage. In the second stage, the process occurs through the formation of elemental sulphur.
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Leaching of copper(I) sulphide by sulphuric acid
Finely grained samples of copper (I) sulphide were leached by H2 SO 4 solution with added NaNO 3. The occurrence probability of chemical reactions was analysed based on literature data and products which were formed during the process and the overall leaching reaction was defined. The effect of temperature, concentration of NaNO 3 and H 2 SO 4, ...
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Leaching of Primary Copper Sulfide Ore in Chloride
2018-7-25 through to other leaching processes, such as the bacterial leaching of gold sulfide concentrates, where ferric iron promotes the dissolution of pyrite and arsenopyrite. In addition, numerous studies showed that leaching of chalcopyrite in chloride media results in higher copper extractions than in sulfate media [16,23,24].
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(PDF) LEACHING OF A ROASTED COPPER SULFIDE
LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.
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Leaching process for copper concentrates - The
A method of leaching copper from copper sulphide-containing concentrates, such as chalcopyrite, includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface, the process being carried out under conditions whereby the pyrite is not materially oxidized, for example by maintaining the operating solution potential at a suitable level.
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Sulphide Leaching - 911 Metallurgist
2015-6-24 Mixtures of hypochlorous and hydrochloric acid (the former a very powerful oxidizing agent) help leach sulphide ores, the overall reaction being: MS + Cl(aq) ^ MCl2 (aq) + S The technique can be used for Lead (PbS), copper (Cu 2 S and CuS), Iron
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TECK’S CESL COPPER PROCESS: A COMMERCIAL READY
2015-11-20 implement Teck’s CESL Copper Process. The CESL Copper Process is as a medium temperature pressure leach for sulphide concentrates in the presence of chloride catalytic ions (12 g/L). In most cases a light re-grind of the mill concentrate is necessary to reduce particle size. Grinding the concentrate increases the
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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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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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Leaching of copper(I) sulphide by sulphuric acid
Finely grained samples of copper(I) sulphide were leached by H 2 SO 4 solution with added NaNO 3.The occurrence probability of chemical reactions was analysed based on literature data and products which were formed during the process and the overall leaching reaction was defined.
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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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(PDF) LEACHING OF A ROASTED COPPER SULFIDE
LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.
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Leaching process for copper concentrates - The
A method of leaching copper from copper sulphide-containing concentrates, such as chalcopyrite, includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface, the process being carried out under conditions whereby the pyrite is not materially oxidized, for example by maintaining the operating solution potential at a suitable level.
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(PDF) A comprehensive model for copper sulphide
A model of the dump leaching process that incorporates column is generally good especially for copper recovery. All of the oxygen balance, heat balance, and air convection. Metall. Trans. B 6B, 617–624. main features of the PLS are captured even if exact values vary for Croft, T.N., Pericleous, K., Cross, M., 1995.
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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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Cu Leaching Using Regenerated Ferric Sulphate
Secondary copper sulphide minerals such as chalcocite (Cu. 2. S) or covellite (CuS), although not as abundant as chalcopyrite, represent a non-negligible source of copper. The enrichment zone of porphyry copper deposits (e.g. Morenci), or the sulphidic zones of Central African copper deposits, are examples of secondary copper minerals deposits.
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The cuprex metal extraction process: Recovering
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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CESL COPPER PROCESS – AN ECONOMIC ALTERNATIVE
2015-11-20 As the process matured into a viable alternative to traditional pyrometallurgy, CESL began customized testing of the process to treat an assortment of concentrate grades and mineralogies. Testwork was performed on copper–zinc and copper-nickel-cobalt concentrates at the pilot plant in 1996 and again in 2001-2002. In 2002 through 2005, pilot-
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How Sherritt Refines Nickel
2010-10-1 solid copper sulphide. The slurry is passed through a lamella thickener and polish filters to recover the copper sulphide solids. The clarified solution then proceeds to nickel recovery. The solids in the thickener underflow are filtered, washed and sold as feed to a copper smelter. How Sherritt Refines Nickel . Nickel Recovery
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A-Z of Copper Ore Leaching
2021-3-26 Leaching of copper sulphide concentrates - Background - Processes applied commercially - Processes operated at demonstration plant scale - Processes operated at pilot plant scale - Other process developments - Trends Break Agitated leaching of oxide ores - Background - Typical commercial operations - Typical flowsheets ...
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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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(PDF) Copper leaching from primary sulfides: Options
Copper leaching from primary sulfides: Options for biological and chemical extraction of copper. Download. Related Papers. Extractive Metallurgy of Copper. By Marlene Sarahi Cano. Manganese metallurgy review. Part I: Leaching of ores/secondary materials and recovery of electrolytic/chemical manganese dioxide.
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Leaching process for copper concentrates - The
A method of leaching copper from copper sulphide-containing concentrates, such as chalcopyrite, includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface, the process being carried out under conditions whereby the pyrite is not materially oxidized, for example by maintaining the operating solution potential at a suitable level.
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Advances in high-temperature heap leaching of refractory ...
2012-12-13 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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TECK’S CESL COPPER PROCESS: A COMMERCIAL READY
2015-11-20 implement Teck’s CESL Copper Process. The CESL Copper Process is as a medium temperature pressure leach for sulphide concentrates in the presence of chloride catalytic ions (12 g/L). In most cases a light re-grind of the mill concentrate is necessary to reduce particle size. Grinding the concentrate increases the
دردشة على الإنترنت Read More -
-
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.
دردشة على الإنترنت Read More -
-
Cu Leaching Using Regenerated Ferric Sulphate
Secondary copper sulphide minerals such as chalcocite (Cu. 2. S) or covellite (CuS), although not as abundant as chalcopyrite, represent a non-negligible source of copper. The enrichment zone of porphyry copper deposits (e.g. Morenci), or the sulphidic zones of Central African copper deposits, are examples of secondary copper minerals deposits.
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Hydromet Group - Hydrometallurgy at the University
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
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How Sherritt Refines Nickel
2010-10-1 solid copper sulphide. The slurry is passed through a lamella thickener and polish filters to recover the copper sulphide solids. The clarified solution then proceeds to nickel recovery. The solids in the thickener underflow are filtered, washed and sold as feed to a copper smelter. How Sherritt Refines Nickel . Nickel Recovery
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