pyrite flotation

Pyrite Depression in Copper Flotation

The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant's pH up to the other side (right side) of the PYRITE curve. The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite depression. You also need to insure your pyrite ...

pyrite flotation process iron ore - barkboats.cz

Pyrite ore beneficiation process equipment for sale Cyprus ZME, flotation is a process in which valuable the pulp and also reduce the flotation of iron pyrite. sbm high efficiency pyrite flotation with iso approvedHigh Efficient 8cbm Flotation Machine For Pyrite Ore, pyrite flotationsf series high efficiency ore iron flotation, gold ore ...

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

Pyrite Mining | Processing Equipment | Flow Chart | Cases ...

Flotation Separation As flotation also can be used for pyrite ore separation, though flotation separation has deficiency with considerable large investment in equipment, higher mining cost, while better efficiency and index in mining with simple flotation reagents, so flotation methods can be used for low grade pyrite …

THE SEPARATION OF PYRITE AND ARSENOPYRITE BY FLOTATION ...

The aim of the research programme is to investigate the potential of flotation for the separation of arsenopyrite and pyrite minerals. The efficient separation of pyrite and arsenopyrite by a cheap process such as flotation has long been recognized as a desirable technological goal …

Pyrite-Gold Recovery in Copper Rougher Flotation Tailings

unintentional pyrite flotation is undesirable in a Cu-Au ore flotation circuit due to the detrimental effect on Cu final grade. Therefore, in order to improve final concentrate grade, pyrite depression strategies (e.g. aeration, sulphite, cyanide addition, etc.) have been used over the years to minimise pyrite …

Electrochemical properties of pyrite, pyrrhotite, and ...

flotation circuits, and the application of this information in the field of electrochemistry15. One of the most important separation stages in flotation circuits is the separation of pyrite and pyrrhotite from other sulphide minerals. Understanding of activation and depression of sulphide minerals, such as pyrite

Pyrite Tailings Recovery by Flotation

Metallurgical ContentThe Pyrite Tailings Flotation Circuit FlowsheetFINE TAILINGSCOARSE TAILINGSCONDITIONINGFLOTATIONTHICKENING AND FILTERINGLABORATORY TESTS Pyrite ...

Role of dixanthogen on pyrite flotation: solubility ...

May 01, 2002· The xanthate adsorption mechanism on pyrite was investigated with an emphasis on solubility studies. Additionally, adsorption studies, Eh and infrared spectrophotometer measurements were performed. Pyrite floats at pH levels between 3 and 6 using ethyl and amyl xanthafes with a maximum at pH 4. The solubility of pyrite in the absence and presence of xanthate was investigated …

Flotation of sphalerite and pyrite in the presence of ...

8 min of flotation of 88% in the absence and 73% in the presence of 10 mol dm. y3 3 sodium sulfite. The effect of sodium sulfite on pyrite flotation is more pronounced than on sphalerite flotation with flotation recoveries being reduced by half at a sodium sulfite concentration of 2=10 y4 mol dm 3. However, at higher sodium sulfite concentrations,

Collectorless Flotation of Oxidized Pyrite | Request PDF

The flotation recoveries of pyrite from the sub-bituminous coal and the meta-bituminous coal were over 95%, with pyrite grade of over 95% in the concentrates. View Show abstract

The role of sodium sulfide in the flotation of pyrite ...

Apr 01, 2018· In copper-gold flotation plants, pyrite which is depressed in copper flotation is often floated subsequently with the addition of sodium sulfide (Na 2 S) to recover the associated gold. For the first time, this study investigated the role of Na 2 S responsible for the flotation of pyrite depressed in chalcopyrite flotation through flotation tests and Cyro-XPS (X-ray photoelectron spectroscopy ...

Gold-Pyrite ores - Danafloat

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 …

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 ...

(PDF) Selective flotation of chalcopyrite from pyrite ...

Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation.

Floatation of Ok Tedi Pyrite - AusIMM

Pyrite is a significant gangue sulphide mineral in the Ok Tedi copper ore. Its presence in the flotation concentrate is not entirely desirable since it lowers the grade of the final copper concentrate. Lime depression of the pyrite has been practiced with some success. However, it has been observed that at the pH for pyrite...

(PDF) Pyrite Flotation: A Review - ResearchGate

Oct 06, 2010· Pyrite flotation has been investigated b y many researchers. These works have r evealed out. that pyrite displays variable behaviour in flotation circuits. This behavior mainl y related with.

Removal of Pyrite in Coal Flotation: Mineral Processing ...

Apr 25, 2007· In most operating coal-cleaning plants, a significant amount of pyrite is recovered in the froth during flotation of high-sulfur coal. Reducing the pyrite recovery first requires that the primary recovery mechanism should be identified, as different measures are required for reducing entrainment, locked-particle flotation, or true hydrophobic flotation.

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

activated pyrite flotation. They demonstrated that the pulp oxidation potential is one of the important factors controlling the copper-activated pyrite flotation so that it can determine the different proportions of hydrophobic and hydrophilic species on the pyrite surface (He et al., 2005).

Effects of type and dosages of organic depressants on ...

Dec 01, 2018· Pyrite flotation conditions include: Aerophine 3418A, 40 mg/dm 3, MIBC, 10 mg/dm 3, collector and frother condition time for 3 min, and flotation time of 5 min. After the tests, it was shown that the concentration of starch does not have much effect on the recovery of pyrite, and the effect of depressant increases or decreases with pH change [22] .

The effect of galvanic interaction between chalcopyrite ...

Aug 11, 2020· An investigation on the surface properties and collector adsorption was conducted after the galvanic interaction of chalcopyrite and pyrite in the flo…

WO1993010904A1 - 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 ...

INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF …

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. The flotation plant design was based on extensive benchscale testwork (including locked

The Adsorption of Cu Species onto Pyrite Surface and Its ...

The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO 4 only at alkaline pH, while being depressed at acidic and neutral pH.

The Application of Xanthate in Froth Flotation Process ...

Pyrite can use xanthate as the collector in acidic, neutral and weak alkali slurries. The acid-treated pyrite has good floatability (the optimum pH for the use of xanthate is 4.5). For the flotation of pyrite, the ability of xanthate to collect is better than that of dithiophosphate. 2. Xanthate Application in Sphalerite Froth Flotation

Subject: "pyrite" - PubAg Search Results

In this work, the flotation recovery of sphalerite and pyrite from an old high zinc grade tailing was studied. In particular, the effect of different flotation reagents such as collector, auxiliary collector, depressant, activators, and frother on the flotation performance were investigated. The synergic effect of the collector blends, as well ...

The effect of saline water on copper activation of pyrite ...

Jan 15, 2019· Pyrite flotation was conducted in fresh water and seawater and results are shown in Fig. 3. In the absence of copper ions, pyrite recovery was 32.7% and 12.8% in seawater and fresh water, respectively. The addition of copper ions with dosages ranging from 100 g/t to 500 g/t ...

Surface chemistry of activation of lime-depressed pyrite ...

The depression of pyrite by lime is attributed to the surface formation of Ca(OH)2, CaSO4 and Fe(OH)3 as determined by XPS analysis. Xanthate flotation tests show that oxalic acid and other ...

Interaction of copper(II) ions with pyrite and its ...

Xumeng Chen, Yongjun Peng, Dee Bradshaw, Effect of regrinding conditions on pyrite flotation in the presence of copper ions, International Journal of Mineral Processing, 10.1016/j.minpro.2013.08.007, 125, (129-136), (2013).

Minerals | Free Full-Text | Selective Flotation of Pyrite ...

Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this study, the flotation experiments of a single mineral and mixed minerals were performed using chitosan with different molecular weights (MW = 2−3, 3−6, 10 and 100 kDa) as a depressant, ethyl ...

The effect of lizardite surface characteristics on pyrite ...

Oct 15, 2012· In Fig. 2, the flotation recovery of pyrite can be observed as a function of pH in the absence and presence of lizardite mineral.The flotation recovery of pyrite in the absence of lizardite is very high (>85%) under acidic and neutral conditions. As the pH was increased, pyrite recovery decreased due to formation of hydrophilic iron oxy-hydroxy species on the surface .

ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION

concentrate would be necessary and flotation could possibly be the process used. the fact that the pyrite was a xanthate-floated concentrate was also considered; however, this pyrite is stock piled (sulphuric acid plants now tend to obtain sulphur from the oil industry) and

Flotation of Pyrite - 911metallurgist.com

Table of ContentsDescription of SamplesPreparation of SamplesFactors Affecting Flotation of PyriteKind and Physical Condition of MineralSize of Mineral GrainsMethod ...