flotation iron pyrite

  • Collectorless flotation of oxidized pyrite ScienceDirect

    Collectorless flotation of oxidized pyrite ScienceDirect

    In conventional flotation, the bubbles are formed using air, which results in lower flotation recoveries for pyrite/arsenopyrite, due to oxidation of the pyrite surfaces. However, the N 2 TEC flotation technology, developed by Newmont in 1997, enables higher flotation recovery and more selectivity, by creating an inert atmosphere using nitrogen gas [ 36 ].

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  • GoldPyrite ores Danafloat Home

    GoldPyrite ores Danafloat Home

    GoldPyrite ores. Natural pH is recommended for gold flotation. Alternatively using soda ash for pH adjustment can reduce gold depression. Where gold is associated with pyrite in base metal ores where iron sulphides are depressed and report to the tailings, a separate tailings pyrite flotation concentrate should be considered.

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  • Pyrite Depressant Froth Flotation (Sulphide amp; Oxide

    Pyrite Depressant Froth Flotation (Sulphide amp; Oxide

    Flotation of copper at different alkaline pH from 7upto 10 and using different Xanthates as collector vs. recovery of copper may give some clue. Minimum Pyrite obtained in copper concentrate is the starting point for further flotation test work. Depressing Pyrite is always a tricky matter.

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  • Pyrite an overview ScienceDirect Topics

    Pyrite an overview ScienceDirect Topics

    7.3 Flotation of GoldCarrying Iron Sulfides. Pyrite is known to be oleophilic when the surface is free of oxidation products (Kocabag et al., 1990), but it is nevertheless necessary to use a collector to float pyrite.

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  • Copper and Pyrite Separation by Selective and Sequential

    Copper and Pyrite Separation by Selective and Sequential

    Flotation process of CopperPyrite minerals. The filtered pyrite concentrates are treated by roasting for acid production from the expelled sulphur and to produce a calcine for cyanidation. The filtered pyrite concentrate, if low in gold and silver, is marketed for its sulphur content in making sulphuric acid or sulphur dioxide gas.

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  • How to Separate Gold from Pyrite

    How to Separate Gold from Pyrite

    Upon the ordinary auriferous sulphide of iron, or arsenical pyrites, the solution of potassium cyanide acts readily, not by dissolving the sulphuret, but by attacking the gold upon its exposed edges, and eating its way into the cubes by a slow advance, dissolving out the gold as it goes.

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  • Iron Pyrite Meaning, Properties and Powers The Complete

    Iron Pyrite Meaning, Properties and Powers The Complete

    Apr 10, 20190183;32;Iron Pyrite Properties. Iron pyrite is one of the most common sulfide minerals in the world thats more popularly known as Fools Gold. It got its name because it looks just like gold to people who dont know what real gold looks like

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  • Pyrite an overview ScienceDirect Topics

    Pyrite an overview ScienceDirect Topics

    Arsenopyrite has very similar properties to pyrite, and the flotation conditions for its recovery are similar to pyrite. Arsenopyrite is susceptible to the formation of oxidation products on its surface. Under oxidizing conditions, a high concentration of PAX is required to achieve high arsenopyrite recovery (Monte et al., 2002).

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  • Pyrite Flotation A Review ResearchGate

    Pyrite Flotation A Review ResearchGate

    determines the electronic and flotation behavior of pyrite since they are often present within the mineral lattice at levels up to several percent (Abraitis et al., 2004).

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  • US5171428A Flotation separation of arsenopyrite from

    US5171428A Flotation separation of arsenopyrite from

    On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite. 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.

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  • Rcovery of gold in pyritic ores mineengineer

    Rcovery of gold in pyritic ores mineengineer

    That appears to leave froth flotation as still the best method of recovering the gold from pyritic ores. Sulfide ores, such as chalcopyrite, sphaelerite, galena, and pyrrhotite, and mixtures of these ores have historically been found with micron size gold particles included in them.

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  • GoldPyrite ores Danafloat Home

    GoldPyrite ores Danafloat Home

    GoldPyrite ores. Natural pH is recommended for gold flotation. Alternatively using soda ash for pH adjustment can reduce gold depression. Where gold is associated with pyrite in base metal ores where iron sulphides are depressed and report to the tailings, a separate tailings pyrite flotation concentrate should be considered.

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  • INFLUENCE OF PYRITE CONTENT ON THE FLOTATION OF

    INFLUENCE OF PYRITE CONTENT ON THE FLOTATION OF

    interactions occurring between pyrite and chalcopyrite surfaces during grinding and conditioning, prior to flotation, lead to chalcopyrite oxidation and copper activation of the former. This also results in the formation of hydrophilic surface coatings of iron hydroxide species that inhibit chalcopyrite flotation.

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  • Pyrite flotation Magma Copper Company's Superior Facility

    Pyrite flotation Magma Copper Company's Superior Facility

    Pyrite Flotation Supertor Mine additiond income for the facility. Because this facility is currently operating the pyrite flotation circuit on an as needed basis to suppiy demand, pyritebearing tailings continue to be discharged to the tailings impoundment. Because the pyrite flotation has not fully eliminated a

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  • Iron Pyrite Meaning, Properties and Powers The Complete

    Iron Pyrite Meaning, Properties and Powers The Complete

    Apr 10, 20190183;32;Iron Pyrite Properties. Iron pyrite is one of the most common sulfide minerals in the world thats more popularly known as Fools Gold. It got its name because it looks just like gold to people who dont know what real gold looks like

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  • How to Separate Gold from Pyrite

    How to Separate Gold from Pyrite

    The ores, which have been met with in various parts of the world, consisting mainly of limonite or hydrated oxide of iron, and in most cases believed to be the result of decomposition of pyritic ores by atmospheric agencies, are also extremely refractory, causing the mercury to sicken rapidly, and yielding only about the same percentage of gold as can be obtained from unoxidised pyrites.

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  • A review on electrochemical behavior of pyrite in the

    A review on electrochemical behavior of pyrite in the

    Metal sulfides are usually semiconductor and cause electrochemical reactions. This phenomenon plays an important role in sulfide flotation. Pyrite as the most abundant sulfide mineral is often associated with valuable sulfide minerals, coal and gold. It is very important to study its electrochemical behavior in the flotation process.

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  • PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR

    PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR

    Pyrite grain size is usually s up to 6mm in diameter. The coarser the grain, the higher the gas velocity must be to maintain the bed in a fluidized state. Even flotation pyrites with a grain size less than 70 181;m can be processed in the fluid bed roaster. Gas velocity in

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  • Recovery of pyrite from copper tailings by flotation

    Recovery of pyrite from copper tailings by flotation

    The pyrite flotation in the recleaner stage is faster than in the cleaner stage. 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

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  • Pyrite Flotation Froth Flotation (Sulphide amp; Oxide

    Pyrite Flotation Froth Flotation (Sulphide amp; Oxide

    Pyrite Flotation (6 replies) 3. The effectiveness of activator (e.g. copper sulphate) can be affected by the pulp chemistry, such as pH and Eh. Therefore, it is important to monitor the pulp chemistry when you testing. 4. Froth stability could also be important, and can be influenced by the collector dosage and also the addition of activator.

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  • Selective flotation of chalcopyrite from pyrite using

    Selective flotation of chalcopyrite from pyrite using

    Aug 15, 20190183;32;In a bid to achieve the separation of chalcopyrite from pyrite, flotation has been employed. Pyrite is easily activated due to the galvanic interactions and the existence of copper ions dissolved during grinding and flotation (Mu et al., 2018, Peng and Grano, 2010, Qin et al., 2015).

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  • Collectorless Flotation of Oxidized Pyrite Request PDF

    Collectorless Flotation of Oxidized Pyrite Request PDF

    Request PDF on ResearchGate Collectorless Flotation of Oxidized Pyrite Pyrite is a chemically active mineral, the surface of which oxidizes when exposed to the atmosphere and to aqueous

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  • Introduction to Mineral Processing cpchem

    Introduction to Mineral Processing cpchem

    Flotation circuits are often operated at a pH range of 7.5 to 11.5. The exact range at any given plant is optimized for the ore at that site. Lime is often used to raise the pH of the pulp and also reduce the flotation of iron pyrite.

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  • Selective Flotation of Pyrite from Arsenopyrite by Low

    Selective Flotation of Pyrite from Arsenopyrite by Low

    In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals. The microflotation experiments results indicated that plasma pretreatment can achieve selective flotation of arsenopyrite from pyrite. The XPS analysis results indicated that the oxidation

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  • Pyrite depression by dextrin in flotation with xanthates

    Pyrite depression by dextrin in flotation with xanthates

    flotation processes operating at high pH such as the flotation of copper in porphyry ores and flotation of zinc in polymetallic basemetal sulfide ores. Furthermore, dextrin could be used as a pyrite depressant in copper flotation plants using sea water where high pH is unpractical because of the high

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  • Flotation of Pyrite Metallurgist amp; Mineral Processing

    Flotation of Pyrite Metallurgist amp; Mineral Processing

    Flotation of Pyrite. This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the University of California. The purpose of the tests here recorded is to determine the action of standard oils, oil mixtures, and addition agents on the flotation of pyrites.

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  • INFLUENCE OF PYRITE CONTENT ON THE FLOTATION OF

    INFLUENCE OF PYRITE CONTENT ON THE FLOTATION OF

    INFLUENCE OF PYRITE CONTENT ON THE FLOTATION OF CHALCOPYRITE AFTER REGRINDING WITH ISAMILL Clement Owusu, Max Zanin *, Daniel Fornasiero and Jonas AddaiMensah *Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA 5095, Australia Email [email protected]

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  • pyrite depression in the copper flotation ewags

    pyrite depression in the copper flotation ewags

    Pyrite depression The efficiency of PIONERA BioPolymer versus sodium cyanide in copper recovery PIONERA BioPolymers can offer a significant economic advantage in flotation of iron/sulfur bearing minerals in reducing smelter penalties, increasing grade and recovery of metallic concentrates.

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  • Modelling of pyrite depression process by lime in copper

    Modelling of pyrite depression process by lime in copper

    flotation of pyrrhotite at this conditions were 15,8 and 13,3 and of chalcopyrite16,0 and 14,2 correspondingly. The maximum difference of chalcopyrite floatability and both iron sulphides, and the maximum selectivity of their separation are observed at logK values near 14,3 14,6 (Figure 3, b).

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  • Introduction to Mineral Processing cpchem

    Introduction to Mineral Processing cpchem

    Introduction to Mineral Processing. In ore beneficiation, flotation is a process in which valuable minerals are separated from worthless material or other valuable minerals by inducing them to gather in and on the surface of a froth layer. Sulfide and nonsulfide minerals as

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