Ferric chloride leaching of chalcopyrite: Synergetic
The effect of agitation on the copper recovery from chalcopyrite crystals when leached in ferric chloride was studied at a temperature of 90 °C in 05 M FeCl3–05 M HCl The results are shown in Fig 2 Unexpectedly, agitation had a negative effect on the amount of copper extracted Copper leaching from chalcopyrite concentrate in ferric and cupric chloride system was investigated using a twostage 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 extractionCopper leaching from chalcopyrite concentrate in Cu(II)/Fe Chemical leaching of chalcopyrite with ferric ion The leaching of copper from sulphide ore bodies occurs naturally, releasing copper and iron In ancient times, copper was recovered by cementation with metal iron and iron in the form of ferrous sulphate by evaporation of the solutionLeaching of chalcopyrite with ferric ion Part I: General Leaching of Primary Copper Sulfide Ore in Chloride Ferrous , Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate sulfuric acid [9], hydrochloric acid [10], and sodium chloride sulfuric acid [11], among others [10] The slow copper from chalcopyrite dissolution has been attributed to ,ferric chloride leaching of copper from chalcopyriteReactions (1) to (3) represent the reaction between chalcopyrite and ferric chloride in an acid environment the initial formation of copper chloride complex by an intermediate oxidation results in the initial formation of a sulphur layer that covers the surface of the chalcopyrite, the entire oxidation involves a second stage of interaction between the sulphur formed and the remain ferric oxidant to Kinetic Study of Chalcopyrite Leaching with Iron (III
Chloride leaching of chalcopyrite ScienceDirect
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 electrowinning circuit The leaching of chalcopyrite with ferric chloride Tetsuji Hirato 1, Makoto Kinoshita 2, Yasuhiro Awakura 1 Hiroshi Majima 1 Metallurgical Transactions B volume 17, pages 19 – 28 (1986)Cite this article 199 Accesses 38 Citations 3 Altmetric Metrics details Abstract A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to elucidate the leaching The leaching of chalcopyrite with ferric chloride Although the leaching efficiency of chalcopyrite was very low at ambient temperature, the percentages of copper dissolved in the presence of hydrogen peroxide (H2O2) and ferric sulfate (Fe2(SO4)3 (PDF) Copper Leaching from Nanoparticles of Chalcopyrite Leaching Chalcopyrite is the holy grail for hydrometallurgists (Leachers), difficult to leach as the sulfur forms a layer over the mineral and makes the leaching slow Having said that, it is not 100% not leachable, not unusual for ore dumps (low grade) containing chalcopyrite to be placed under leach but report low recovery +/30% TCu over several years and the rate is around 051% per month Chalcopyrite Leaching Metallurgist Mineral Processing In order to leach chalcopyrite and chalcocite under atmospheric or high pressure leaching conditions in sulfate or chloride medium, ferric and copper ions, bacteria, oxygen and other oxidizers can Ferric chloride leaching of chalcopyrite: Synergetic
ferric chloride leaching of copper from chalcopyrite
Leaching of Primary Copper Sulfide Ore in Chloride Ferrous , Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate sulfuric acid [9], hydrochloric acid [10], and sodium chloride sulfuric acid [11], among others [10] The slow copper from chalcopyrite dissolution has been attributed to ,Ferric Chloride Leaching Because of the demonstrated efficacy of FeCl3 as a leachant for CuFeS2, the most stable of the copper sulfides (because of its facecentered tetragonal structure), FeCl3 was a likely candidate to selectively remove Cu from the simple sulfides produced as reaction products during the sulfidization of CuFeS2 concentrate Recover Copper by Leaching SulfidationPartitioned Two tests were performed under conditions of pH = 1 and ozone, ferric chloride with ultrasound with an average ORP of 550, obtaining an improvement of 1633% in the extraction of copper, higher than the leaching with pH = 1, ORP of 490, ozone and ferric chloride without the use of ultrasound The lowest extraction result of this process, which serves as a reference for comparison between the Determining the Chalcopyrite Leaching Method Using Ozone The leaching of chalcopyrite with ferric chloride Tetsuji Hirato 1, Makoto Kinoshita 2, Yasuhiro Awakura 1 Hiroshi Majima 1 Metallurgical Transactions B volume 17, pages 19 – 28 (1986)Cite this article 199 Accesses 38 Citations 3 Altmetric Metrics details Abstract A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to elucidate the leaching The leaching of chalcopyrite with ferric chloride In this research, the effect of mechanical activation, via ball milling, of copper sulfide concentrate on the efficiency and mechanism of copper leaching in an acidic ferric chloride solution was investigated Copper concentrate, containing chalcopyrite as the main constituent, was supplied from Sarcheshme mine, located in the central part of Iran By 24 hours of ball milling, the size of the Copper leaching from nanoparticles of chalcopyrite
Oxidative Leaching of Chalcopyrite by Cupric Ion in
Request PDF Oxidative Leaching of Chalcopyrite by Cupric Ion in Chloride Media In this study, chalcopyrite concentrate produced in Sarcheshmeh copper plant was subjected to oxidative leaching Ferric chloride is a more effective reagent and this is attributable to the morphological characteristics of chalcopyrite leaching The kinetics with both leachant solutions were found to be linear over an extended period, followed by an acceleration stage, as a result of an increase in reaction surface area A comparison of the results obtained in a kinetic study of ferric chloride leaching The Leaching of Chalcopyrite in Ferric Chloride and Ferric Although the leaching efficiency of chalcopyrite was very low at ambient temperature, the percentages of copper dissolved in the presence of hydrogen peroxide (H2O2) and ferric sulfate (Fe2(SO4)3 (PDF) Copper Leaching from Nanoparticles of Chalcopyrite Chalcopyrite Leaching in Acidic Chloride Solution without Sulphates knowledge on copper leaching from chalcopyrite ore, in a chlo rinated acid medium without sulphate, under weakly oxidizing conditions, with the coexistence of ferrous/cupric ions Given that the precursors of the passivating layer and its formation, in the absence of sulphates, have not been previously established, this Chalcopyrite Leaching in Acidic Chloride Solution without Leaching of Primary Copper Sulfide Ore in Chloride Ferrous , Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate [4–7], ferric chloride [7,8], sodium nitrate sulfuric acid [9], hydrochloric acid [10], and sodium chloride sulfuric acid [11], among others [10] The slow copper from chalcopyrite dissolution has been attributed to ,ferric chloride leaching of copper from chalcopyrite
Determining the Chalcopyrite Leaching Method Using Ozone
Two tests were performed under conditions of pH = 1 and ozone, ferric chloride with ultrasound with an average ORP of 550, obtaining an improvement of 1633% in the extraction of copper, higher than the leaching with pH = 1, ORP of 490, ozone and ferric chloride without the use of ultrasound The lowest extraction result of this process, which serves as a reference for comparison between the The leaching of chalcopyrite with ferric chloride Tetsuji Hirato 1, Makoto Kinoshita 2, Yasuhiro Awakura 1 Hiroshi Majima 1 Metallurgical Transactions B volume 17, pages 19 – 28 (1986)Cite this article 199 Accesses 38 Citations 3 Altmetric Metrics details Abstract A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to elucidate the leaching The leaching of chalcopyrite with ferric chloride In this research, the effect of mechanical activation, via ball milling, of copper sulfide concentrate on the efficiency and mechanism of copper leaching in an acidic ferric chloride solution was investigated Copper concentrate, containing chalcopyrite as the main constituent, was supplied from Sarcheshme mine, located in the central part of Iran By 24 hours of ball milling, the size of the Copper leaching from nanoparticles of chalcopyrite Ferric chloride is a more effective reagent and this is attributable to the morphological characteristics of chalcopyrite leaching The kinetics with both leachant solutions were found to be linear over an extended period, followed by an acceleration stage, as a result of an increase in reaction surface area A comparison of the results obtained in a kinetic study of ferric chloride leaching The Leaching of Chalcopyrite in Ferric Chloride and Ferric Recovery of Copper, Iron, and Sulfur from Chalcopyrite Concentrate using a Ferric Chloride Leach F P Haver 1 M M Wong 1 JOM volume 23, pages 25 – 29 (1971)Cite this article 35 Accesses 4 Citations 6 Altmetric Metrics details Abstract Smelting of copper concentrates results in the discharge of millions of tons of SO, to the atmosphere each year Because of increasing concern Recovery of Copper, Iron, and Sulfur from Chalcopyrite
Chloride leaching for chalcopyrite UBC Library Open
Chloride leaching for chalcopyrite: Creator: Liddicoat, Jenni Anne: Publisher: University of British Columbia: Date Issued: 2003: Description: Two new process flowsheets have been developed which combine chloride leaching for chalcopyrite with solvent extraction, to selectively transfer copper to a conventional sulfate electrowinning circuit Chalcopyrite Leaching in Acidic Chloride Solution without Sulphates knowledge on copper leaching from chalcopyrite ore, in a chlo rinated acid medium without sulphate, under weakly oxidizing conditions, with the coexistence of ferrous/cupric ions Given that the precursors of the passivating layer and its formation, in the absence of sulphates, have not been previously established, this Chalcopyrite Leaching in Acidic Chloride Solution without The leaching kinetics of natural chalcopyrite crystals with ferric sulfate was studied The morphology of the leached chalcopyrite and the electrochemical properties of chalcopyrite electrodes also were investigated The leaching of chalcopyrite showed paraboliclike kinetics initially and then showed linear kinetics In the initial stage, a dense sulfur layer formed on the chalcopyrite The leaching of chalcopyrite with ferric sulfate ferric chloride leaching of copper from chalcopyrite The Bureau of Mines presents an economic evaluation of its process for the ferric chloride leaching of chalcopyrite extraction of copper from chalcopyrite Get Price Direct selective leaching of chalcopyrite concentrate Direct selective leaching of chalcopyrite concentrate copper extraction yield was obtained at about 72 Turan Direct extraction of copper from chalcopyrite
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