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leaching copper chalcopyrite ore book

BACTERIAL LEACHING OF COPPER FROM LOW GRADE

This organism was used for leaching out the copper from low grade chalcopyrite ore which contained 06 per cent copper. The copper contents of the samples of low grade chalcopyrite ore ranged from 02 to O 8 per cent. Sporadic deposits of higher grade copper ores also occur at Ingal­

Solvometallurgical process for extraction of copper from ...

Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl 3 as oxidizing agent and ethylene glycol (EG) as organic solvent).

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

Thus, chalcopyrite, the most common ore of copper, occurs and widely distributed in metallic veins associated with pyrite (FeS 2 ), phyrrhotite (Fe 7 S 8 ), bornites (Cu 5 FeS), cha l-

Chalcopyrite Leaching - Metallurgist Mineral Processing ...

May 05, 2017  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.

US20090241734A1 - Method of leaching copper sulfide ores ...

An object of the present invention is to provide a method of recovering copper from primary copper sulfide ores containing chalcopyrite as a main constituent under versatile conditions for real operation in all efficient and cost-effective manner. A method of leaching copper sulfide ores, wherein the growth of microorganisms present on ore surfaces and in a leaching solution is inhibited and ...

US10563287B2 - Leaching copper-containing ores - Google ...

A method of leaching copper-containing ores, such as chalcopyrite ores, with a leach liquor in the presence of silver and an activation agent that activates silver whereby the silver enhances copper extraction from copper ores.

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

Sep 01, 2020  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

In situ recovery of copper sulfide ores: Alternative ...

Sep 01, 2020  Results confirmed that the kinetics of ferric leaching of the chalcopyrite ore particles was well described according to the following equation (Vargas, 2010): (11) t τ = 1 − 3 1 − X C P 2 3 + 2 1 − X C P in which X CP is the degree of conversion of chalcopyrite, t is leaching time and τ is the leaching time necessary for full ...

LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY

Serbia (the approximate Cu content in the ore ranges from 0.2 - 0.3 % with >10 % copper in the form of oxide minerals). The leaching experiments were performed using sulphuric acid solutions, whereby the kinetics of copper leaching was investigated with respect to acid concentration and solid to liquid ratio. The copper concentration in

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

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 temperatures. 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 ...

(PDF) AN INVESTIGATION OF LEACHING CHALCOPYRITE ORE ...

AN INVESTIGATION OF LEACHING CHALCOPYRITE ORE

BACTERIAL LEACHING OF COPPER FROM LOW GRADE

This organism was used for leaching out the copper from low grade chalcopyrite ore which contained 06 per cent copper. The copper contents of the samples of low grade chalcopyrite ore ranged from 02 to O 8 per cent. Sporadic deposits of higher grade copper ores also occur at Ingal­

Minerals Free Full-Text Leaching of Chalcopyrite in ...

The leaching of copper from industrial copper ore with 4.8 wt % chalcopyrite by acidified nitrate with seawater based media was investigated. Water quality (pure water and seawater), temperature (25–70 °C), reagent concentration, and nitrate type (sodium and potassium) were studied variables. Leaching conditions were: 100 g ore/1 L solution; P80 of 62.5 micro;m; 400 rpm and leaching time ...

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

0.09% dissolution of copper from the ore body per day. The leach liquor was processed through solvent extraction and electrowinning. Extraction of copper from the actual leach liquor was carried out with 1.5% LIX 622N in kerosene with zero co-extraction of iron. The copper-free raffinate was fed back to the leaching unit. Stripping of copper ...

Percolation Leaching of a Chalcopyrite-Bearing Ore at ...

PERCOLATION LEACHING OF A CHALCOPYRITE .BEARING ORE AT AMBIENT AND ELEVATED TEMPERATURES WITH BACTERIA By B. W. Madsen, 1 and R. D. Groves 2 ABSTRACT The Bureau of Mines conducted a large-scale (6.4 t), long-term (2,165 days) test to gain a better understanding of the leaching characteris­

A Column Leaching Model of Low-Grade Chalcopyrite Ore ...

Bioleaching models to examine copper extraction from low-grade chalcopyrite ores were set up to identify the influence of pyrite on leaching efficacy. A combination of scanning electron microscopy and geochemical analysis showed that extraction was marginally enhanced by the addition of pyrite when using a combination of Leptospirillum ferrooxidans, an iron oxidiser, Acidithiobacillus ...

The Study of Copper Leaching from Conichalcite and ...

Request PDF The Study of Copper Leaching from Conichalcite and Chalcopyrite Using Alternative Lixiviants This project investigated alternative lixiviants for leaching copper from chalcopyrite ...

Leaching of Chalcopyrite with Sodium Hypochlorite ...

Leaching variables that affect the rate of copper dissolution from chalcopyrite are agitation speed (300–900 rpm), total pressure (0.8–2.0 MPa), temperature (160–180 °C), and sulfuric acid ...

Extractive Metallurgy of Copper ScienceDirect

Copper is most commonly present in the earth's crust as coppereironesulfide and copper sulfide minerals, such as chalcopyrite (CuFeS 2) and chalcocite (Cu 2 S). The concentration of these minerals in an ore body is low. Typical copper ores contain from 0.5% Cu to 1 or 2% Cu.

Characterization and kinetic study on ammonia leaching of ...

May 01, 2014  Besides copper sulphide, NH 3 /NH 4 + leaching was used for other copper minerals such malachite, low-grade mixed Cu ore, tenorite [17−19]. The reported studies on chalcopyrite leaching in ammonia solutions were based on either high-grade chalcopyrite (26.5% Cu) concentrate [9] or nearly pure (97% CuFeS 2 ) concentrate [15].

Search for a new technology producing copper from chalcopyrite

Two copper concentrates (with a copper content of 8.9 and 9.9 wt.%) with chalcopyrite as the dominant copper mineral have been leached with ferric sulphate at 12 g/L of ferric iron and pH 1.25 in ...

Hydrometallurgy: Principles and Applications - Google Books

Jan 23, 2014  This book is concerned with the theoretical principles of hydrometallurgical processes and engineering aspects. The hydrometallurgical processes of production of copper are discussed and leaching of chalcopyrite as the main sulphide mineral of copper processed in industry is used as an example. The book is suitable as a university textbook for students of metallurgy.Examines the

Solvometallurgical process for extraction of copper from ...

Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl 3 as oxidizing agent and ethylene glycol (EG) as organic solvent).

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

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 nitric acid for ...

BACTERIAL LEACHING OF COPPER FROM LOW GRADE

This organism was used for leaching out the copper from low grade chalcopyrite ore which contained 06 per cent copper. The copper contents of the samples of low grade chalcopyrite ore ranged from 02 to O 8 per cent. Sporadic deposits of higher grade copper ores also occur at Ingal­

Minerals Free Full-Text Leaching of Chalcopyrite in ...

The leaching of copper from industrial copper ore with 4.8 wt % chalcopyrite by acidified nitrate with seawater based media was investigated. Water quality (pure water and seawater), temperature (25–70 °C), reagent concentration, and nitrate type (sodium and potassium) were studied variables. Leaching conditions were: 100 g ore/1 L solution; P80 of 62.5 micro;m; 400 rpm and leaching time ...

(PDF) AN INVESTIGATION OF LEACHING CHALCOPYRITE ORE ...

AN INVESTIGATION OF LEACHING CHALCOPYRITE ORE

The Study of Copper Leaching from Conichalcite and ...

Mar 11, 2018  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.

A Column Leaching Model of Low-Grade Chalcopyrite Ore ...

Bioleaching models to examine copper extraction from low-grade chalcopyrite ores were set up to identify the influence of pyrite on leaching efficacy. A combination of scanning electron microscopy and geochemical analysis showed that extraction was marginally enhanced by the addition of pyrite when using a combination of Leptospirillum ferrooxidans, an iron oxidiser, Acidithiobacillus ...

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

0.09% dissolution of copper from the ore body per day. The leach liquor was processed through solvent extraction and electrowinning. Extraction of copper from the actual leach liquor was carried out with 1.5% LIX 622N in kerosene with zero co-extraction of iron. The copper-free raffinate was fed back to the leaching unit. Stripping of copper ...

The Study of Copper Leaching from Conichalcite and ...

Request PDF The Study of Copper Leaching from Conichalcite and Chalcopyrite Using Alternative Lixiviants This project investigated alternative lixiviants for leaching copper from chalcopyrite ...

Hydrometallurgy: Principles and Applications - Google Books

Jan 23, 2014  This book is concerned with the theoretical principles of hydrometallurgical processes and engineering aspects. The hydrometallurgical processes of production of copper are discussed and leaching of chalcopyrite as the main sulphide mineral of copper processed in industry is used as an example. The book is suitable as a university textbook for students of metallurgy.Examines the

Kinetics of Chalcopyrite Leaching in Novel and Exotic ...

Jan 01, 2019  Chalcopyrite (CuFeS2) is the earth’s most abundant copper ore mineral, but is refractory to leaching with sulfates, chlorides, and other common lixiviants and oxidants. This has led to increasing research into alternative lixiviants for recovering Cu from chalcopyrite.

JP2003328051A - Leaching treatment method of copper ...

PROBLEM TO BE SOLVED: To provide a method for leaching copper sulfide ore containing chalcopyrite which efficiently and economically leaches copper from copper sulfide ore containing chalcopyrite at room temperature. SOLUTION: In the method for leaching copper from copper sulfide ore containing chalcopyrite, an aqueous solution containing at least one of ferrous sulfate and ferric

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

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 nitric acid for ...

Oxygen pressure leaching of copper from primary ...

The leaching of primary porphyry chalcopyrite ore under simulated solution-mining conditions was studied using a packed-bed reactor. A mathematical model incorporating the intrinsic leaching kinetics of chalcopyrite and pyrite grains, the pore diffusion of dissolved oxygen within the ore fragments, liquid-solid mass transfer, and the effect of fluid flow and axial dispersion was formulated and ...

(PDF) Leaching of chalcopyrite with ferric ion. Part II ...

Introduction (Burkin, 1969), copper polysulphide with a deficit of iron with respect to chalcopyrite (Ammou-Chokroum et al., 1977 and Hackl et al., 1995), Chalcopyrite, the most abundant mineral in copper ore bodies, is or elemental sulphur (reaction (1)) (Muñoz et al., 1979; Majima et al., also the most recalcitrant to hydrometallurgical ...

Mineralogical Characterization of Chalcopyrite Bioleaching ...

1. Introduction. Chalcopyrite (CuFeS 2) is the most important copper ore, comprising approximately 70% of copper reserves in the world [1,2].In metallurgical applications, chalcopyrite is mainly subjected to pyrometallurgy treatment after concentration by a flotation process [3,4].The interest in bio-hydrometallurgy has increased recently in order to minimize the sulfur dioxide emissions, and ...