Copper and Pyrite Separation by Selective and Sequential ...

Oct 21, 2020  The copper tailing is conditioned with sulphuric acid to a near neutral pH in a Super-Agitator and Conditioner, and then subjected to a second stage of flotation for the production of a pyrite concentrate. The cell arrangement for the pyrite is the same as for the copper circuit.

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copper concentrate air pyrite flotation process

copper concentrate flotation process. copper concentrate flotation process. Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process.

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Copper Flotation - Mineral Processing Metallurgy

Mar 19, 2017  The flotation of native copper ores is nearly always preceded by gravity concentration in jigs and tables not only because the combined process is more economical as regards costs, but also because the copper often occurs as large grains which flatten out during grinding and cannot be broken to a size small enough for flotation.

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(PDF) Recovery of pyrite from copper tailings by flotation

Keywords: Copper tailing, Pyrite recovery, Flotation, Split factor Accumulated recoveries as a time function of the rougher, scavenger, cleaner, and recleaner flotation stages.

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(PDF) Improved Flotation Process Control at Newcrest's ...

Mar 19, 2007  copper concentrate; and pyrite flotation to produce a pyrite. ... IMPROVED FLOTATION PROCESS CONTROL AT NEWCREST’S TELFER OPERATION. ... air injected into the flotation cells or by manipulating ...

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Effect of pyrite content of feed and configuration of ...

Mar 01, 2018  Thus, the efficient separation of pyrite from copper sulfide minerals during the flotation process is vital . In copper flotation plants, the general strategy is to maximize the recovery of copper minerals along with floating some pyrite at the rougher stage (non-selective bulk flotation) followed by further rejection of iron sulfides at the ...

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A review on electrochemical behavior of pyrite in the ...

Mar 25, 2017  Based on XPS, IR 7, UV–vis 8 and flotation studies, Shen et al. proposed an electrochemical mechanism for the depression of pyrite involving the formation of copper hydroxide on the copper activated surfaces of pyrite by reduction of oxygen, which leads to a decrease in the solution potential (Reactions and ).

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Pyrite Flotation - Froth Flotation (Sulphide Oxide ...

Can you list the factors affects the floatability of pyrite from refractory low grade ore. I used a Wemco lab flotation cell and aimed on analysing factors like collector dosages (PAX), Activator (Copper sulphate),MIBC , pH and others like pulp density and particle size (70 and 150 microns) .However how these factors affect the floatability of the pyrites from low grade refractory ore.

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Clay and pyrite in copper concentrate VS frother - Froth ...

Hi my dears. I am researchers in Iran Sarcheshmeh Copper Mine. One of the problems concentrator increases the amount of clay minerals and pyrite in flotation concentrates and the final grade will be reduced. What do you suggest for chemicals? What is the

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Telfer Processing Plant Upgrade – The Implementation of ...

fl otation, where copper bearing minerals are recovered to a saleable copper concentrate, followed by re-activation and fl otation of the pyrite, which is leached with cyanide to recover gold. Much of the free gold that is not recovered in the gravity stage during grinding is recovered to the copper concentrate.

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Recovery of pyrite from copper tailings by flotation ...

Sep 01, 2019  The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3.

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(PDF) Improved Flotation Process Control at Newcrest's ...

copper concentrate; and pyrite flotation to produce a pyrite. ... IMPROVED FLOTATION PROCESS CONTROL AT NEWCREST’S TELFER OPERATION. ... air injected into the flotation

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Effect of pyrite content of feed and configuration of ...

Mar 01, 2018  Thus, the efficient separation of pyrite from copper sulfide minerals during the flotation process is vital . In copper flotation plants, the general strategy is to maximize the recovery of copper minerals along with floating some pyrite at the rougher stage (non-selective bulk flotation) followed by further rejection of iron sulfides at the ...

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US20110155651A1 - Separation of copper minerals from ...

US20110155651A1 US12/960,041 US96004110A US2011155651A1 US 20110155651 A1 US20110155651 A1 US 20110155651A1 US 96004110 A US96004110 A US 96004110A US 2011155651 A1 US2011155651 A1 US 2011155651A1 Authority US United States Prior art keywords feed sulfide valuable metal flotation copper Prior art date 2009-12-04 Legal status (The legal status

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(PDF) BULK FLOTATION OF COMPLEX COPPER ORE Khmer Lee ...

2 There are two common options practiced in the treatment of these ores. These are (1) sequential copper flotation from pyrite and other sulfides, the most common practice in the treatment of sulfides ores and (2) bulk or semi-bulk flotation followed by copper– pyrite separation after re-grinding of the bulk concentrate.

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(PDF) UTILIZATION OF FLOTATION IN COPPER EXTRACTION

In flotation, various dosages of collector (PAX) and various pH were tested, at which pyrite was depressed. The recovery of metallic copper in the concentrate increased with the collector dose.

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The Introduction of Flotating Process about Copper-Lead-Zinc

Mar 23, 2016  Finally the result was great(the copper concentrate grade 24.06%, recovery rate 51.70%, and lead concentrate grade of 58.3%, the recovery rate of 89.24%, zinc concentrate grade was 47.08%, the ...

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Separation of chalcopyrite and pyrite from a copper ...

Sep 01, 2018  1. Introduction. Copper tailings generated from engineering process of copper-containing mine constitute a large proportion of mine wastes, which were estimated to be more than 30 million tons produced worldwide .Copper tailings can serve as the source materials for the residual minerals, such as pyrite, chalcopyrite, and chalcocite , , , .Besides, the discarding of copper tailings

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Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

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PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR BURNING

Pyrite roasting and sulphur burning plants are built for the production of sulphuric acid. Whereas the burning of elemental sulphur is the main source for sulphuric acid, the roasting process is an interesting alternative once pyrite concentrate is available. In addition to these two applications, Figure 1 shows a wider variety of sources for the

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Treatment of process water from molybdenum flotation

Process water bleed to the pyrite tailings pond Pyrite concentrate Pulp oxidation N 2 Air or O 2 Pulp polishing by peroxide H 2O Flocculant Peroxide oxidation by Fenton procedure Neutralization by lime addition Figure 1 Proposed flow sheet: Active treatment of process water 2.4. Procedure Pulp of fresh copper concentrate, 30% solids was ...

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US5171428A - Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3 - ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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(PDF) A Study on Selective Flotation in Low and High ...

flotation process it is essential to take the role of pyrite ... between copper-activated pyrite flotation and surface ... function coarsest size dry weight of the concentrate grade of concentrate ...

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Silver Gold Recovery Flotation Process

Mar 17, 2017  Silver Gold Recovery Flotation Process. Silver Gold Recovery Flotation Process. Post navigation. ... that the recovery of the gold involved lowering the grade of a copper concentrate with unwanted pyrite, the fall in the value of the concentrate due to the presence of the pyrite must be more than counterbalanced by its rise in value due to the ...

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Recovery of pyrite from copper tailings by flotation ...

Sep 01, 2019  The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3.

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A study on the effect of active pyrite on flotation of ...

Abstract: Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. Misreported pyrite into copper concentrates decreased the grade and recovery of copper. In this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to ...

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Chapter 7 Electrochemical Control of Pyrite-Activation by ...

flotation plants is to reject pyrite to produce a marketable grade concentrate. More recently, clean air regulations mandate pyrite removal from smelter feeds to reduce the emission of acid rain precursor. Pyrite, like a number of other sulfides, may be activated for more efficient flotation by interaction with dissolved heavy metals ions, e.g ...

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(PDF) BULK FLOTATION OF COMPLEX COPPER ORE Khmer Lee ...

2 There are two common options practiced in the treatment of these ores. These are (1) sequential copper flotation from pyrite and other sulfides, the most common practice in the treatment of sulfides ores and (2) bulk or semi-bulk flotation followed by copper– pyrite separation after re-grinding of the bulk concentrate.

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1 Froth Flotation – Fundamental Principles

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only

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The Introduction of Flotating Process about Copper-Lead-Zinc

Mar 23, 2016  Finally the result was great(the copper concentrate grade 24.06%, recovery rate 51.70%, and lead concentrate grade of 58.3%, the recovery rate of 89.24%, zinc concentrate grade was 47.08%, the ...

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(PDF) A Review of the Flotation of Copper Minerals

ro ugher flotation tests conducted, the highest copper recovery obtained was 78.9% at a concentrate grade of 2.5% TCu using AM28 dosage of 740 g/t and PAX dos age of 20 g/t. w ith one stag e of ...

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60 Centuries of Copper: The Flotation Process

Only the flotation process mentioned above could make this practicable; and even so, it requires large companies with huge plants, continuous working and immense capital. This explains why, in order to smelt 4 million tons of new copper in 1963, nearly 400 million tons

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Treatment of process water from molybdenum flotation

Process water bleed to the pyrite tailings pond Pyrite concentrate Pulp oxidation N 2 Air or O 2 Pulp polishing by peroxide H 2O Flocculant Peroxide oxidation by Fenton procedure Neutralization by lime addition Figure 1 Proposed flow sheet: Active treatment of process water 2.4. Procedure Pulp of fresh copper concentrate, 30% solids was ...

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TACKLING IMPURITIES IN COPPER CONCENTRATES

Table 3 - Chemical Analysis of Mercury-Bearing Copper Concentrates Element Concentrate “A” Concentrate “B” Cu 26 20 Fe 26 27 S 28 38 As + Sb 0.1 4.1 Zn 0.1 5.5 Hg, ppm 200 430 The principal mineralogy of the two concentrates is shown in Table 4.

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INTERPRETATION OF FLOTATION DATA FOR THE DESIGN

characteristics, Hellyer’s sequential flotation circuit versus Cadia’s “simple” copper/gold flotation circuit. They have a common theme in that pyrite forms the principal floatable concentrate diluent. Hellyer ore contains finely disseminated chalcopyrite, sphalerite, galena, and tetrahedrite.

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(PDF) A Study on Selective Flotation in Low and High ...

flotation process it is essential to take the role of pyrite ... between copper-activated pyrite flotation and surface ... function coarsest size dry weight of the concentrate grade of concentrate ...

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12.3 Primary Copper Smelting

copper. A continuous process called floatation, which uses water, various flotation chemicals, and compressed air, separates the ore into fractions. Depending upon the chemicals used, some minerals float to the surface and are removed in a foam of air bubbles, while others sink and are reprocessed. Pine oils, cresylic acid, and long-chain ...

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Improved Flotation Process Control at Newcrest’s Telfer ...

Improved Flotation Process Control at Newcrest’s Telfer ... copper concentrate; and pyrite flotation to produce a pyrite ... The air injection control has one flow controller and three

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A study on the effect of active pyrite on flotation of ...

Abstract: Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. Misreported pyrite into copper concentrates decreased the grade and recovery of copper. In this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to ...

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(PDF) A Study on Selective Flotation in Low and High ...

flotation process it is essential to take the role of pyrite ... between copper-activated pyrite flotation and surface ... function coarsest size dry weight of the concentrate grade of concentrate ...

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Chapter 7 Electrochemical Control of Pyrite-Activation by ...

flotation plants is to reject pyrite to produce a marketable grade concentrate. More recently, clean air regulations mandate pyrite removal from smelter feeds to reduce the emission of acid rain precursor. Pyrite, like a number of other sulfides, may be activated for more efficient flotation by interaction with dissolved heavy metals ions, e.g ...

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Pyrite Leaching Behaviour under CESL Process Conditions

The CESL Copper Process typically comprises the steps of concentrate regrinding, the oxidation of ... pyrite from copper concentrate in the upstream flotation step. However, this may not be practical due to ... (Figure 7) show that the degree of S oxidation is strongly related to the pyrite content of the concentrate .

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12.3 Primary Copper Smelting

copper. A continuous process called floatation, which uses water, various flotation chemicals, and compressed air, separates the ore into fractions. Depending upon the chemicals used, some minerals float to the surface and are removed in a foam of air bubbles, while others sink and are reprocessed. Pine oils, cresylic acid, and long-chain ...

More

INTERPRETATION OF FLOTATION DATA FOR THE DESIGN

characteristics, Hellyer’s sequential flotation circuit versus Cadia’s “simple” copper/gold flotation circuit. They have a common theme in that pyrite forms the principal floatable concentrate diluent. Hellyer ore contains finely disseminated chalcopyrite, sphalerite, galena, and tetrahedrite.

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Copper Flotation

The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees -- a by-product of paper mills) to make bubbles, an alcohol to strengthen the bubbles, and a ...

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60 Centuries of Copper: The Flotation Process

Only the flotation process mentioned above could make this practicable; and even so, it requires large companies with huge plants, continuous working and immense capital. This explains why, in order to smelt 4 million tons of new copper in 1963, nearly 400 million tons

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(PDF) A review on electrochemical behavior of pyrite in ...

Pyrite as the most abundant sulfide mineral on the Earth has little economic value and in flotation processes it is often rejected to tailings, unless it contains significant amounts of valuable metals to be recovered.Over several decades, extensive studies have been conducted on the electrochemical behavior of pyrite in the flotation process ...

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TACKLING IMPURITIES IN COPPER CONCENTRATES

Table 3 - Chemical Analysis of Mercury-Bearing Copper Concentrates Element Concentrate “A” Concentrate “B” Cu 26 20 Fe 26 27 S 28 38 As + Sb 0.1 4.1 Zn 0.1 5.5 Hg, ppm 200 430 The principal mineralogy of the two concentrates is shown in Table 4.

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(PDF) A study on selective flotation in low and high ...

Effect of microwave system location on floatability of chalcopyrite and pyrite in a copper ore processing circuit By Ahmad Hassanzadeh Assessment of flotation kinetics modeling using information criteria; case studies of elevated-pyritic copper sulfide and high-grade carbonaceous sedimentary apatite ores

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ALTA Gold 2012 E-Doc - Albion Process

The gold-pyrite association is dependent on ore grade and textural features of the ore. When present with pyrite, arsenopyrite commonly will have significantly higher gold grades than the pyrite associations. Enargite (and Luzonite) is a common copper-arsenic mineral that can be a significant gold carrier.

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Separation efficiency improvement of a low grade copper ...

configuration is sequential flotation, where copper bearing minerals are recovered to a saleable copper concentrate, followed by re-activation and flotation of the pyrite which is leached with cyanide to recover gold. Both trains produce a copper concentrate with significant quantities of non-sulphide gangue minerals.

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EP0568672B1 - Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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