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Ferric Chloride Leaching Of Copper From Chalcopyrite

Economic evaluation of a process for ferric chloride

Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate [Washington] U S Dept of Interior Bureau of Mines 1976 (OCoLC)609238269 Online version Phillips Thomas A Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate [Washington] U S Dept of Interior Bureau of Get price

NAVER 학술정보 Ferric chloride leaching of chalcopyrite

Abstract This work presents a study of the leaching of chalcopyrite in acidic ferric chloride Two chalcopyrite samples (natural chalcopyrite crystal and chalcopyrite concentrate) were leached under different conditions The effects of stirring speed and temperature were investigated It was found that agitation had a negative effect on copper recovery from chalcopyrite during the leaching Get price

Ferric Chloride Leaching Of Copper From Chalcopyrite

Chemical leaching of chalcopyrite with ferric ionThe 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 solution Get price

The kinetics of the dissolution of chalcopyrite in

Chalcopyrite from different sources appears to dissolve at approximately the same rate which is largely independent of the iron and copper ion concentrations the acidity and chloride ion concentration but depends in some cases on the presence of additives such as fine pyrite or silver ions ud ud Based on the results of these leaching experiments and detailed mineralogical analyses of the Get price

ferric chloride leaching of copper from chalcopyrite mini

The effect of agitation on the leaching of chalcopyrite concentrate in ferric chloride in presence and absence of cupric chloride (C FeCl3 0 5 M T = 90 C 25 m) Similarly the amount sulphate sulphur measured in the leaching solution was found to have the same trend as for the copper recovered as shown in Fig 10 Get price

The Leaching of Chalcopyrite in Ferric Chloride and Ferric

Ferric chloride produced a porous elemental sulfur layer whereas ferric sulfate resulted in the formation and peeling-off of an aggregate of plate-like crystals of elemental sulfur Ferric chloride is a more effective reagent and this is attributable to the morphological characteristics of chalcopyrite leaching Get price

US3957602A

Copper is recovered from chalcopyrite by means of a pollution-free hydrometallurgical process which entails leaching and converting the chalcopyrite with copper sulfate in order to produce an insoluble copper sulfide a soluble iron sulfate and sulfuric acid A secondary leach is then conducted in order to react the copper sulfide with oxygen in the presence of a jarosite-forming cation to Get price

Recovery of copper iron and sulfur from chalcopyrite

Smelting of copper concentrates results in the discharge of millions of tons so2 to the atmosphere each year Because of increasing concern with air pollution the Bureau of Mines has developed a hydrometallurgical procedure to obtain elemental sulfur from chalcopyrite by means of the following reaction cufes2 + 3fecl3 - cucl + 4fecl2 + 2s Get price

Acid

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 C Tsogtkhankhai et al [34] studied the kinetics of leaching copper with nitric acid and with the estimation of the activation energy determined Get price

Ferric chloride leaching of sulphidized chalcopyrite

Previous work [8--12] with leachants other than ferric chloride has shown that copper leaching rates and selectivity for copper extraction over iron can be increased by preheating chalcopyrite with sulphur giving products iden- tified as mixtures of pyrite and covellite and/or idaite and/or bornite depend- ing on the temperature reaction time and concentrate to sulphur ratio Get price

Recovering Elemental Sulfur from Nonferrous Minerals

Recovering Elemental Sulfur from Nonferrous Minerals Ferric Chloride Leaching of Chalcopyrite Concentrate Authors 99 6 percent of the copper and 71 6 percent of the iron were extracted in 2 hours from a typical mill concentrate containing 75 percent cufes2 and 15 percent pyrite (fes2) Get price

Chloride leaching for chalcopyrite

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 Both models were designed to address the common chloride hydromet problem of product impurity and they differ with respect to iron deportment Get price

Chalcopyrite concentrating mill

The ground chalcopyrite is then divided into a first stream and a second stream The first stream is leached in a leach solution containing at least about 100 gpl sulfuric acid and about 10-30 gpl ferric iron to produce a copper ferric chloride leaching of copper from chalcopyrite Get price

Ultrasonic

Ultrasonic-assisted leaching kinetics for the recovery of copper from poorly soluble chalcopyrite 1749 Korean J Chem Eng (Vol 34 No 6) 1 Basic Leaching In the basic leaching process copper is reacted with FeCl 3 as the reactant in an aqueous solution of HCl The reaction is repre-sented by Eq (1) The solid sulfur (So) produced from the Get price

(PDF) Improving of copper extraction from chalcopyrite by

This result supports the idea that copper extraction All leaching experiments were performed yields can be increased by using chloride ions under the atmospheric conditions by using a together with APS for leaching of chalcopyrite magnetic multi stirrer (Velp Scientifica MultiStirrer Firstly effect of the NaCl concentration in the 24 J Cent South Univ (2018) 25 21–28 range of 0–0 25 Get price

Full text of Economic Evaluation of a Process for Ferric

Such a process the ferric chloride leaching of chalcopyrite concentrate has been developed by the Bureau of Mines Reno Metallurgy Research Center The process is hydrometallurgical and since no roasting or smelting of the concentrate takes place no sulfur dioxide is produced Get price

The leaching of chalcopyrite with ferric chloride

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 Get price

Chloride leaching of chalcopyrite

Chloride leaching of chalcopyrite 1 Introduction Currently commercial hydrometallurgical processes for copper largely feature 2 Experimental methods The copper concentrates tested originated from Antamina in northern Peru 3 Excel mass balance outputs for hematite and goethite process Get price

US8070851B2

(d) a patent to CYPRUS which describes the reaction of copper sulphate with chalcopyrite concentrate at elevated temperatures to form insoluble copper sulphide soluble iron sulphate and sulphuric acid and the leaching of copper sulphide with oxygen in an acid medium or with ferric or cupric chloride or in an ammoniacal solution and Get price

Copper leaching from nanoparticles of chalcopyrite

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 Copper leaching from nanoparticles of chalcopyrite concentrate | Springer for Research Development Get price

Passivation of chalcopyrite during its chemical leaching

evidences on the passivation of chalcopyrite during its chemical leaching with ferric sulphate at 68 C That leaching process seems to be greatly affected by the formation of a layer of jarosite on the chalcopyrite surface Thus the copper dissolution rate could be indirectly affected by pH because of iron hydrolysis In this study 0 10 20 30 Get price

Pressure Leaching of Copper Concentrates

Chalcopyrite Concentrate Pressure Leaching Options Atmospheric sulfate media Attrition grind ferric leach Silver-catalyzed ferric leach Biological ferric leach Pressure sulfate High temperature (200oC) Medium temperature (100 oC 200 C) Chloride-assisted Halide system Chloride Chloride Get price

ferric chloride leaching of copper from chalcopyrite mini

(PDF) Leaching of chalcopyrite with ferric ion Part I

The main Chalcopyrite theories related with chalcopyrite passivation point to the formation of a diffusion layer surrounding the Leaching chalcopyrite during dissolution consisting of bimetallic sulphide copper polysulphide with a deﬁcit of iron Ferric iron Mechanism with respect to chalcopyrite Get price

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF

relation to galvanic interactions Leaching at 90C in the presence of 0 1 M ferric ions in 0 1 M sulphuric acid provided the best results with 90% copper extraction from the mixtures in 6 hours Observed copper extractions suggested increased copper extraction from chalcopyrite with this approach Get price

Copper Silver Recovery from a Complex Sulfide

The acid-oxygen leaching technique is more selective but high metal extraction is not common Also some of the iron is extracted into solution and additional processing steps are required to remove it More recently Haver and Wong developed a ferric chloride leaching technique for treating chalcopyrite and galena concentrates Get price

NAVER 학술정보 Ferric chloride leaching of chalcopyrite

Ferric chloride leaching of chalcopyrite Synergetic

Ferric chloride leaching of chalcopyrite Synergetic effect of CuCl2 1 Introduction Chalcopyrite is one of the most important copper minerals in terms of scale 2 Materials and methods Two different samples of chalcopyrite were used in this study 3 Results and discussion The effect of Get price

Ultrasonic

CA2651516C

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 Get price

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF

The kinetics of the dissolution of chalcopyrite in

Ferric chloride leaching of chalcopyrite Synergetic

This work presents a study of the leaching of chalcopyrite in acidic ferric chloride Two chalcopyrite samples (natural chalcopyrite crystal and chalcopyrite concentrate) were leached under different conditions The effects of stirring speed and temperature were investigated It was found that agitation had a negative effect on copper recovery Get price

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