leaching copper chalcopyrite ore book

leaching copper chalcopyrite ore book

The Study of Copper Leaching from Conichalcite and ...

2018-1-10 · This project investigated alternative lixiviants for leaching copper from chalcopyrite and conichalcite, two highly refractory Cu ore minerals. Chalcopyrite (CuFeS 2) is the most abundant of the copper sulfide minerals; conichalcite (CaCuAsO 4 OH) is less well known but contributes to supergene Cu inventory in high-As deposits.

BACTERIAL LEACHING OF COPPER FROM LOW GRADE

This organism was used for leaching out the copper from low grade chalcopyrite ore which contained 0·6 per cent copper. The copper contents of the samples of low grade chalcopyrite ore ranged from 0·2 to O· 8 per cent. Sporadic deposits of higher grade copper ores also occur at Ingal­

Copper leaching from chalcopyrite concentrate in Cu(II)/Fe ...

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media.

Processing of chalcopyrite ore by heap leaching and ...

2017-11-10 · Ore sample description Chalcopyrite ore was obtained from the Quebrada Blanca mine in northern Chile. The ore contained 0.52% copper, with > 95% of that copper being present as chalcopyrite. Prior to use, the ore was crushed to − 13 mm, resulting in a P 80 of 11.4 mm and a fines (− 150 μm) content of 4%.

Investigation of the leaching of chalcopyritic ore in ...

2004-6-1 · Oxidation rate of chalcopyrite in the experimental conditions is low. Probably the reason for that is the impossibility of leaching solution contact and chalcopyrite particles, present inside ore grains. In the initial period of leaching, the chalcopyrite oxidation occurs on surface of ore grains.

Catalytic Heap Leaching of Chalcopyrite Ores Using Jetti’s ...

2019-1-1 · For decades, the mining industry has been focussed to find an efficient and economically attractive process for the leaching of chalcopyrite. Jetti Resources has developed a novel hydrometallurgical alternative to extract metals of value from mineral ores that the mining industry has struggled to process.

Enhanced leaching of copper from chalcopyrite in

2007-6-1 · The first series of leaching experiments involved establishing the effect of ethylene glycol on chalcopyrite dissolution. As shown in Fig. 1, about 15% dissolution was effected in the absence of glycol, while dissolution was enhanced significantly in its presence.Higher ethylene glycol concentrations were used to check the possibility of complete dissolution of chalcopyrite.

Optimization of sulfuric acid leaching of roasted ...

2020-8-26 · Chalcopyrite (CuFeS2) is commonly used ore in production of copper, but leaching of this ore is very slow and inefficient due to “passivation” during leaching at atmospheric conditions. In this study, in order to overcome drawbacks of the passivation layers, the concentrate supplied from Eti Bakır A.Ş. Küre Plant in Turkey was roasted at 600 °C for 1 h and after leached.

Catalytic effect of ethylene thiourea on the leaching of ...

2020-9-1 · Leaching tests were conducted in two columns (diameter = 8.8 cm, height = 21.6 cm) using a low-grade copper ore with a P80 of 0.23 cm. Chalcopyrite was the only copper-bearing phase . Inductively coupled plasma atomic emission spectroscopy showed that the ore's copper

Chalcopyrite Leaching - Metallurgist & Mineral Processing ...

2017-5-5 · 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 0.5-1% per month.

The Study of Copper Leaching from Conichalcite and ...

2018-1-10 · This project investigated alternative lixiviants for leaching copper from chalcopyrite and conichalcite, two highly refractory Cu ore minerals. Chalcopyrite (CuFeS 2) is the most abundant of the copper sulfide minerals; conichalcite (CaCuAsO 4 OH) is less well known but contributes to supergene Cu inventory in high-As deposits. Neither leaches ...

Copper leaching from chalcopyrite concentrate in Cu(II)/Fe ...

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media.

Recovery of copper values from bio-heap leaching of low ...

2010-2-5 · About 45 tons of low-grade chalcopyrite ore procured from Malan-jkhand copper mines was crushed. A representative sample of 122 kg ore was taken and sieved. The low-grade copper ore was ana-lyzed with a high resolution synchrotron based X-ray diffractometer (XRD) and by optical microscopy to display the major and minor minerals.

Leaching of chalcopyrite byThiobacillus thiooxidans and ...

Feasibility for bacterial leaching of two different copper ores from Pakistan was investigated with locally isolated, acidophilic thiobacilli in shake flask culture at 28±2°C. After a lag period of 16 d,Thiobacillus thiooxidans solubilized up to 19% of copper present in chalcopyrite ore in 14 d before entering stationary phase. In oxidized copper ore amended with chalcopyrite ore and ...

LEACHING KINETICS OF COPPER FROM CHALCOPYRITE

2013-9-7 · most convenient method for leaching copper due to concerns over air pollution and regulations regarding the emission of sulfur dioxide that result from smelting. In this study, the leaching recovery-time trajectories of bulk chalcopyrite concentrate obtained from a flotation plant in the Kastamonu region of Turkey are presented.

Enhanced leaching of copper from chalcopyrite in

2007-6-1 · The first series of leaching experiments involved establishing the effect of ethylene glycol on chalcopyrite dissolution. As shown in Fig. 1, about 15% dissolution was effected in the absence of glycol, while dissolution was enhanced significantly in its presence.Higher ethylene glycol concentrations were used to check the possibility of complete dissolution of chalcopyrite.

Optimization of sulfuric acid leaching of roasted ...

2020-8-26 · Chalcopyrite (CuFeS2) is commonly used ore in production of copper, but leaching of this ore is very slow and inefficient due to “passivation” during leaching at atmospheric conditions. In this study, in order to overcome drawbacks of the passivation layers, the concentrate supplied from Eti Bakır A.Ş. Küre Plant in Turkey was roasted at 600 °C for 1 h and after leached.

(PDF) A Review on Novel Techniques for Chalcopyrite Ore ...

In this study, a mineral sample from a copper mining company was used. The copper grade of the sample was 0.79%, and its main contributor was chalcopyrite (84%). The effect of curing time (as ...

Chalcopyrite Leaching - Metallurgist & Mineral Processing ...

2017-5-5 · 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

Leaching of Copper Sulphides - SAIMM

2016-6-8 · bornite and chalcopyrite (Cu 5 FeS 4 and CuFeS 2, respectively) as well as copper sulphides, such as chalcocite, digenite and covellite (Cu 2 S, Cu 9 S 5 and CuS, respectively). LEACHING OPTIONS Three copper sulphide leaching processes are discussed in

Copper leaching from chalcopyrite concentrate in Cu(II)/Fe ...

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media.

Recovery of copper values from bio-heap leaching of low ...

2010-2-5 · About 45 tons of low-grade chalcopyrite ore procured from Malan-jkhand copper mines was crushed. A representative sample of 122 kg ore was taken and sieved. The low-grade copper ore was ana-lyzed with a high resolution synchrotron based X-ray diffractometer (XRD) and by optical microscopy to display the major and minor minerals.

(PDF) Quantitative leaching of a Nigerian chalcopyrite ore ...

Abstract and Figures. Due to increasing uses of copper nitrate, Cu (NO3)2, as catalysts, textile and polishing agents for other metals, experiment on the leaching of a Nigerian chalcopyrite ore by ...

LEACHING KINETICS OF COPPER FROM CHALCOPYRITE

2013-9-7 · most convenient method for leaching copper due to concerns over air pollution and regulations regarding the emission of sulfur dioxide that result from smelting. In this study, the leaching recovery-time trajectories of bulk chalcopyrite concentrate obtained from a flotation plant in the Kastamonu region of Turkey are presented.

New Developments in Hydrometallurgical Copper Ore and ...

2019-1-1 · Biological heap leaching developments for chalcopyrite are also continuing in parallel. These direct leaching technologies are also very attractive for arsenical ores. The atmospheric leaching of copper concentrates is an attractive option along with autoclave processing.

(PDF) A Review on Novel Techniques for Chalcopyrite Ore ...

In this study, a mineral sample from a copper mining company was used. The copper grade of the sample was 0.79%, and its main contributor was chalcopyrite (84%). The effect of curing time (as ...

LEACHING OF LOW-GRADE COPPER ORES: A CASE

2017-6-9 · 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

A Review on Novel Techniques for Chalcopyrite Ore

2012-1-1 · 1.2. Chalcopyrite Ore Production split copper and nickel sulfides and separate them from iron . The sulfide ore minerals including chalcopyrite (CuFeS. 2), sphalerite (ZnS), galena (PbS) provide the major sources of the world’s base metals (Cu, Zn, Pb, respectively), whereas pyrite is virtually ubiquitous as a metalliferous mineral in

Chalcopyrite Leaching - Metallurgist & Mineral Processing ...

2017-5-5 · 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

Leaching of Copper Sulphides - SAIMM

2016-6-8 · bornite and chalcopyrite (Cu 5 FeS 4 and CuFeS 2, respectively) as well as copper sulphides, such as chalcocite, digenite and covellite (Cu 2 S, Cu 9 S 5 and CuS, respectively). LEACHING OPTIONS Three copper sulphide leaching processes are discussed in