recovery of copper sulphide ores

recovery of copper sulphide ores

"The Recovery of Copper in Sulphide Ores by Roasting ...

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. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast. Copper sulphate is soluble in water, so acid will be saved in the leaching process if ...

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AN INVESTIGATION OF COPPER RECOVERY FROM A

Current copper deposits contain significant amounts of secondary non-sulphide minerals and newly discovered deposits are increasingly complex. As a result, research into the improvement of sulphide-oxide copper ores processing through the use of mixed collector systems has surged.

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Oct 01, 2014  In such case, only further reduction of rock fragments size will ensure fuller liberation/surface exposure of valuable sulphide minerals. In the case of copper ore, the typical grain size of copper minerals is often in the range of 0.1–0.3 mm. Difficulties in liberation are further highlighted by the modest grade of many major copper deposits ...

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Optimization of parameters affecting recovery of copper ...

recovery of copper from low-grade sulfide ores such as temperature, pH, and bacterial population during bioleaching. The copper content of the sample was 0.25%, and about 65% of the copper minerals was sulfide minerals. Gangue minerals in the sample were mostly of silica type. Shaking flask experiments were carried out to achieve the

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Copper Sulfide Flotation - Mineral Processing Metallurgy

Apr 13, 2016  Sulphide copper ores generally occur with pyrite, pyrrhotite, arsenopyrite and molybdenite, and with gold and silver. A complete copper-iron separation may not always be essential for the maximum economic recovery and often is tied to the distribution of the gold and silver values. Flowsheet for treatment of Copper Sulfide ores rich in

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Mar 01, 2017  The mixed ore contains oxide, supergene oxide and hypogene sulphide copper species respectively with the greater part of the deposit being made up of sulphide and mixed ores. The oxide ore has a much higher grade than the mixed and sulphide ores but contributes less to the resource (Broughton et al., 2002).

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Copper Mining and Extraction Sulfide Ores

The main ores of copper are sulfides and oxides. From their chemical formulas you can calculate the percentage of copper in each mineral. However this is not the same as the percentage of copper in the ore as that also contains unwanted silicates and other minerals, called gangue, that will have to

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Flotation of a copper sulphide ore from Okiep using thiol ...

Flotation of a copper sulphide ore from Okiep using thiol collectors and their mixtures The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 NON-REFEREED PAPER MARCH 2005 201 Figure 1—The final cumulative copper recovery vs. collector dosage obtained with C2-X, di-C2-DTP and di-C2-DTC in the flotation of the Okiep copper ore

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Leaching of Copper Sulphides - SAIMM

copper sulphide leaching options as alternatives to the more conventional ... The recovery of other valuable metals such as gold and silver can be carried out economically. ... Ferric sulphate leaching of secondary sulphide ores has been successfully commercialised at the Cobre Las Cruces (CLC) and Sepon copper plants. ...

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COPPER RECOVERY FROM LEAN SULFIDE ORES - STEEL CORP,US

Copper is recovered from ores containing about 10-15 percent copper in the form of a sulfide in the presence of significant amounts of iron and nickel, by sulfatizing roasting the ore in an atmosphere including 5-15 percent SO 2 at a temperature of from about 580°C to about 625°C and leaching soluble copper salt therefrom with water.

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Recovery of Copper from Copper Sulfide Concentrate by ...

Jan 17, 2015  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 concentrate. The reactions

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Direct recovery of metals from sulphide ores by leaching ...

What we claim as our invention is 1. A process for the direct recovery of copper from its ores and concentrates which comprises agitating a slurry of finely ground copper sulfide-containing ore or concentrate in a solution of ferric chloride and hydrochloric acid in the anode compartment of an electrolytic cell, said cell having first and second cathode compartments and an anode compartment ...

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Gold recovery from massive sulphide copper gold ores ...

Gold recovery from massive sulphide copper gold ores isusually much lower than from CHEMISTRY 1004 at University of Malaya

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Leaching of Copper Sulphides - SAIMM

copper sulphide leaching options as alternatives to the more conventional ... The recovery of other valuable metals such as gold and silver can be carried out economically. ... Ferric sulphate leaching of secondary sulphide ores has been successfully commercialised at the Cobre Las Cruces (CLC) and Sepon copper plants. ...

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Characterization of a low-grade copper-sulphide ore to ...

Copper-oxide ores are suitable for heap leach and ISR processing, secondary copper-sulphide ores are suitable for heap leaching. Examples can be found in the reviews of Watling (Reference Watling 2006) and Sinclair and Thompson (Reference Sinclair and Thompson 2015). More work is required to understand the suitability of primary and secondary ...

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INVESTIGATION OF EFFECTIVE PARAMETERS FOR

Investigation of effective parameters for molybdenite recovery from porphyry copper ores 479 subjects the bulk copper-molybdenum sulphide concentrate to a selective flotation technique to separate molybdenite from copper sulphide. Reagents Reagent programs applied for the treatment of porphyry copper and copper-molybdenite ores are ...

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supergene sulphide enrichment process

Nov 23, 2015  an investigation of copper recovery from a sulphide oxide ore with a .improvement of sulphide-oxide copper ores processing through the use of mixed collector . secondary enrichment zone and at the top, there exists an oxidized and a . generally void of economic minerals due to leaching by supergene that.focus on the use of soils for geochemical bination these processes may result in ...

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CN100485059C - Method for recovering gold from sulphide ...

The invention relates to a method for recovering gold from a sulphidic concentrate, particularly one containing arsenopyrite and/or pyrite, hydro- metallurgically. The concentrate is first subjected to leaching with a concentrated solution of alkali chloride and copper (II) chloride, by means of which the copper minerals and some of the gold in the concentrate are made to dissolve.

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(PDF) A Review of the Flotation of Copper Minerals

Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of. these base metal sulphide minerals is predominantl y through the froth flotation ...

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A Review of the Cyanidation Treatment of Copper-Gold Ores ...

Table 1. Main sulfide minerals for copper ores [2]. ... Recently, new processes have been developed to treat the main issues previously mentioned about processing complex copper ores for gold recovery. One of these processes is the SART process. SGS Lakefield Group and Teck Corporation developed the SART process in the 1990s [26].

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Recovery of Silver, Gold, and Lead From a Complex Sulfide ...

RECOVERY OF SILVER, GOLD, AND LEAD FROM A COMPLEX SULFIDE ORE USING FERRIC CHLORIDE, THIOUREA, AND BRINE LEACH SOLUTIONS By R. G. Sandberg 1 and J. L. Huiatt 2 ABSTRACT The Bureau of Mines investigated a hydrometallurgical procedure to re­ cover gold, silver, and byproduct lead from a complex lead-zinc sulfide ore.

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(PDF) Copper and Cyanide Recovery in Cyanidation Effluents ...

Sulphide precipitation of metals is a viable alternative process for copper recovery from the barren The copper cyanide complex does not break down cyanide solutions because of the possible high degree of completely, even in strong acid solution, unless there is metal removal over a broad pH range.

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Enhancing flotation separation of chalcopyrite and ...

Mar 18, 2021  Results of copper sulphide ore beneficiation test. The flotation results of copper sulfide ore are shown in Table 7. At pH 9.2, PAAS and GA were used

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

453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

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Direct recovery of metals from sulphide ores by leaching ...

What we claim as our invention is 1. A process for the direct recovery of copper from its ores and concentrates which comprises agitating a slurry of finely ground copper sulfide-containing ore or concentrate in a solution of ferric chloride and hydrochloric acid in the anode compartment of an electrolytic cell, said cell having first and second cathode compartments and an anode compartment ...

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LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY

The changes in copper content in the ore with the time of exploitation at the RTB mines [9] Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper

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supergene sulphide enrichment process

Nov 23, 2015  an investigation of copper recovery from a sulphide oxide ore with a .improvement of sulphide-oxide copper ores processing through the use of mixed collector . secondary enrichment zone and at the top, there exists an oxidized and a . generally void of economic minerals due to leaching by supergene that.focus on the use of soils for geochemical bination these processes may result in ...

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INVESTIGATING THE POTENTIAL OF HYDROFLOAT COARSE

TECHNIQUES ON COPPER SULPHIDE ORES *P.J. Mehrfert1 1ALS Metallurgy 2957 Bowers Place Kamloops, Canada, V1S 1W5 (*Corresponding author: [email protected]) ABSTRACT Recovery of mineralized coarse particles is notoriously low in conventional concentrators that treat copper porphyry ores.

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Recovery of Silver, Gold, and Lead From a Complex Sulfide ...

RECOVERY OF SILVER, GOLD, AND LEAD FROM A COMPLEX SULFIDE ORE USING FERRIC CHLORIDE, THIOUREA, AND BRINE LEACH SOLUTIONS By R. G. Sandberg 1 and J. L. Huiatt 2 ABSTRACT The Bureau of Mines investigated a hydrometallurgical procedure to re­ cover gold, silver, and byproduct lead from a complex lead-zinc sulfide ore.

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CN1348505A - Sulphidisation of sulphide ores for ...

The invention relates to a method for the extraction of metals from copper sulphide and/or copper iron sulphide ores with microbiological- and chemical-type leaching steps for dissolution of the metals, which comprises the following steps: 1) In a conversion step, prior to the leaching steps, the ores are converted to covellite, pyrites and admixed sulphides by the addition of sulphur, and 2 ...

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(PDF) Leaching of Copper Sulphides

The copper recovery ratio of the OKTO P ® 5000 series reactors provided a new atmospheric direct leachi ng process. To ensure high yields, low operating costs and

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A Comparative Study of Copper Recovery from Different ...

Jan 01, 2019  No reaction products were visible on conventional leaching samples, even at the ore surfaces. INTRODUCTION Hydrometallurgical copper leaching (heap leaching or dump leaching) has been used extensively for copper recovery from oxide and secondary-sulfide ores, but not for primary copper sulfides, which contain mainly chalcopyrite as copper minerals.

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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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Recovery of copper and cobalt in the comparative flotation ...

determine grades of copper and cobalt, as well as recovery yields. 1) Variations for copper Figs. 3 and 4 show results of recovery and grade of copper vs time at different pH values. By comparison with the results of Fig. 3 and 4, we note that at natural pH, copper recovery

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A Review of the Cyanidation Treatment of Copper-Gold Ores ...

Table 1. Main sulfide minerals for copper ores [2]. ... Recently, new processes have been developed to treat the main issues previously mentioned about processing complex copper ores for gold recovery. One of these processes is the SART process. SGS Lakefield Group and Teck Corporation developed the SART process in the 1990s [26].

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Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH. The effects of these parameters at three different levels on the recovery of Ni, Cu and Co were investigated using an L 9 Taguchi orthogonal array.

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Innovations in Copper: Mining Extraction: Producing ...

Capital costs at this level of operation were to be US$0.08/lb of copper and operating costs, as shown in Table 2, were estimated at US$0.34/lb of copper. 28 The average ore grade is 0.59% copper and the estimated recovery is 78.2%. The operation was upgraded to 180,000 tons per year before it was completed and to 250,000 tons per year in 2001.

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