ferric chloride leaching of copper from chalcopyrite

The Leaching of Chalcopyrite in Ferric Chloride and FerricKnow More

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...

Chloride leaching for chalcopyriteKnow More

Title 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...

For oxidative leaching of chalcopyrite with dissolvedKnow More

Corpus ID 30795911 For oxidative leaching of chalcopyrite with dissolved oxygen and ferric ions in sulfate media inproceedings Lu2016ForOL title= For oxidative leaching of chalcopyrite with dissolved oxygen and ferric ions in sulfate media author= Diankun Lu and W Wang and Y Chang and Feng Xie and Kaixi Jiang year= 2016...

The leaching of chalcopyrite with ferric chlorideKnow More

A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to elucidate the leaching mechanism of chalcopyrite with FeCl 3 The leaching rate of chalcopyrite exhibits a half order dependency on the FeCl 3 concentration whereas it is independent of the FeCl 2 concentration The mixed potential of chalcopyrite exhibits a 72 mV decade...

Leaching of Primary Copper Sulfide Ore in ChlorideKnow More

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta Chile was investigated after leaching with a chloride-ferrous media at two temperatur The study focused on whether this chemical leaching system could be applied at an industrial scale Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore the...

Leaching of copper concentratesKnow More

and sulfate ions Ferric ion results from the acidic leaching of any iron-containing material It may be a minor problem as in leaching high grade chalcocite or a very major problem as in leaching chalcopyrite While ferric ion is not a major problem in basic leaching the inability of...

Minerals Free FullKnow More

Shiers et al studied leaching chalcopyrite using different oxidants hypochlorous acid sodium chlorate and sodium nitrate with the addition of ferric ions ferric sulfate ferric nitrate and ferric chloride and obtained a copper extraction of 92 in chloride-nitrate-ferric mixture which proved favorable for chalcopyrite leaching at 50 176 C...

Redox potential dependence of chalcopyrite leaching inKnow More

chalcopyrite leaching in chloride acid solutions is not fully understood and it triggers difficult to predict the value of E op under given conditions The aim of the present study is to establish the mechanism of chalcopyrite leaching in acidic ferric chloride solutions and...

PDF Leaching of chalcopyrite in cupric chloride solutionKnow More

The leaching of natural chalcopyrite was studied in both ferric sulfate and ferric chloride solutions The chemistry of the two reactions is quite different with substantial sulfur oxidation...

Recovery of Copper Iron and Sulfur from ChalcopyriteKnow More

Dec 28 2015 0183 32 The leach was highly selective gangue minerals including pyrite were not attacked thus accounting for the relatively low recoveries of iron and sulfur Recovery of Copper Iron and Sulfur from Chalcopyrite Concentrate using a Ferric Chloride Leach SpringerLink...

Chalcopyrite LeachingKnow More

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 05-1 per month...

Cupric and Chloride Ions Leaching of ChalcopyriteKnow More

This makes the dissolution more beneficial in cupric chloride solutions compared to ferric chloride solutions 43 44 45 It has also been revealed that the addition of cupric chloride to ferric chloride leaching helps chalcopyrite dissolution The capability of chloride ions to form complexes is crucial...

US4115221AKnow More

A process for hydrometallurgically recovering copper from concentrates of chalcopyrite and other sulfide and mixed sulfide ores utilizes the pretreatment step of fine grinding of the concentrates coupled with subsequent leaching steps As a pretreatment for the copper-containing concentrates the concentrates are ground preferrably with an attritor-type grinding device to reduce the particle...

A review of chloride assisted copper sulfide leaching byKnow More

2007 Elemental sulfur formed during the leaching of chalcopyrite with ferric chloride is also more porous than that formed with ferric sulfate thus the leaching rate is an order of magnitude larger in the former Majima et al 1985 Peters 1976a reported that chalcopyrite the...

Ferric chloride leaching of chalcopyrite SynergeticKnow More

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...

Leaching of Copper SulphidesKnow More

POX in a copper heap leach circuit Figure 2 Simplified ferric leaching flowsheet Figure 3 Copper chloride leach process Leaching Chemistry As outlined earlier the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the...

Recover Copper by Leaching SulfidationKnow More

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 face-centered 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...

Obtaining copper I chloride from ores with acetonitrileKnow More

FIG 4 depicts the percent copper extracted by a two stage ferric chloride leach of chalcopyrite FIG 5 is a flow diagram of an overall chalcopyrite leach process The solubility of copper I chloride in water containing various proportions of acetonitrile at pH 1-2 at 25 176 C was measured and is shown in FIG 1 of the accompanying drawings...

Determining the Chalcopyrite Leaching Method Using OzoneKnow More

In the ozone and ferric chloride test the recovery did not produce better results they were similar to the best chlorine test The test in which only ozone was used as an oxidizing agent for chalcopyrite showed better results compared to the chloride leaching with more than 4796 extraction...

PDF A Review on Novel Techniques for Chalcopyrite OreKnow More

copper chloride is then sent to the electrolysis sectio n as catholyte which is fed to the cathode compartm ent of an leaching of chalcopyrite with ferric sulfate Fe 2 SO 4 3...

Chloride leaching of chalcopyriteKnow More

Dec 01 2007 0183 32 The leach conditions chosen for the 2 stage countercurrent leach experiments were based on literature investigations that indicated an atmospheric leach near boiling point at low pH using relatively fine particles and high concentrations of chloride and copper II oxidant are important for effective and efficient leaching of chalcopyrite...

Effect of pH and Fe III ions on chalcopyrite bioleachingKnow More

leaching chalcopyrite than the two pure cultures separately The same behavior was observed by Zhang et al 2008 Moreover particle sizewhich influences the specific surface area is an important factor in determining the kinetics of the leaching reactions Ahonen and Tuovinen 1995 In most bioleaching works the authors chalcopyrite...

WO2007134343A2Know More

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...

The leaching of chalcopyrite with ferric sulfateKnow More

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 parabolic-like...

Leaching of chalcopyrite in cupric chloride solutionKnow More

In general the leaching of chalcopyrite is more effective in chloride solutions with cupric ions as the oxidant than in sulfate solutions with ferric ions as the oxidant This is possibly due to kinetic rather than thermodynamic considerations eg the higher rates of electron transfer in chloride...

Solvometallurgical process for extraction of copper fromKnow More

In sulfate media the leaching kinetics are generally slow several months and the leaching of copper is difficult to be complete due to the formation of passivation layers on the surface of chalcopyrite such as solid sulfur and iron precipitate eg jarosite 1 In chloride media the leaching rate is faster than that in sulfate media due...

ChalcopyriteKnow More

This again renders the extraction of copper uneconomical by this process Other leaching systems that have been studied over the years for the extraction of copper from chalcopyrite on laboratory or pilot scale include systems employing concentrated solutions of ferric chloride or...

Kinetic Study of Chalcopyrite Leaching with Iron IIIKnow More

For the final reaction 16 mol of ferric chloride are necessary for an entire oxidation of one mol of chalcopyrite this means that for 1 gr of chalcopyrite 1414 g of FeCl 3 are required nevertheless due to the final products of the leaching process in the present and other previous studies Majima Awakura et al 1985 Havlík Škrobian et...

Full text of Economic Evaluation of a Process for FerricKnow More

- estimated annual operating cost ferric chloride leach process annual cost cost per pound anode copper direct cost raw materials chalcopyrite concentrate at 00 per ton hydrochloric acid 20 dec baume at 2700 per ton ammonium sulfide at 9400 per ton...

Study of integrated leaching and electrowinning of copperKnow More

Results showed that high hydrochloric acid and cupric ion concentration assisted leaching on the other hand electrowinning of copper from chalcopyrite ore leaching solution using chloride media is much feasible when acid and cupric ion concentrations are low 005 M/l and 001 M/l respectively...