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Pyrite flotation

The flotation properties of pyrite were found to be significantly influenced by va~iations in the pH. In acidic solutions the pyrite floatability is very high, and recoveries of 95% could be achieved using only a frother. A sharp decrease in floatability was observed in alkaline

  • Depression of pyrite in seawater flotation by guar gum

    Depression of pyrite in seawater flotation by guar gum

    Pyrite flotation recovery was correlated with FBRM and PVM characterization to delineate the pyrite depression mechanisms by the guar gum. The high flotation recovery of pyrite with PAX was significantly lowered by guar gum, indicating that this polysaccharide could be used as an effective depressant in flotation with sea water

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

    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)

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  • Pyrite depression by dextrin in flotation with xanthates

    Pyrite depression by dextrin in flotation with xanthates

    Depression of pyrite flotation with xanthate was determined by the oxidation level of the pyrite surface. Floatability of pyrite with xanthate was highly impaired by dextrin at pH 8 only when the surface density of ferric hydroxide on the pyrite surface was very high. Keywords: pyrite, dextrin, adsorption, flotation, xanthates, polysaccharides 1

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  • (PDF) Depression of Pyrite in Seawater Flotation by Guar

    (PDF) Depression of Pyrite in Seawater Flotation by Guar

    Pyrite flotation recovery was correlated with FBRM and PVM characterization to delineate the pyrite depression mechanisms by the guar gum. The high flotation recovery of pyrite with PAX was

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  • Role of dixanthogen on pyrite flotation: solubility

    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

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  • Surface characterization of molybdenite, bismuthinite, and

    Surface characterization of molybdenite, bismuthinite, and

    Nov 01, 2021 Numerous works have been performed to investigate the phenomena happening on the surface of pyrite during flotation. However, most relevant works were undertaken in extremely acid solution (pH of 0 or 1) or in the moderate alkaline solutions (pH of 8 to 10) [18] , [19] , [20] , with few covering the common range of pH in a systemic manner

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  • pyrite ore flotation process

    pyrite ore flotation process

    Aug 16, 2021 Flotation of Pyrite - 911metallurgist. 2017-5-3 Effect of Size of Mineral Grain on the Flotation of Pyrite. Sample mixture No. 4, used in these tests, was prepared in a manner similar to sample mixtures Nos. 1, 2

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  • Chapter 7 Electrochemical Control of Pyrite-Activation

    Chapter 7 Electrochemical Control of Pyrite-Activation

    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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  • Gold-Pyrite ores - Danafloat

    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

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  • Critical importance of pH and collector type on the

    Critical importance of pH and collector type on the

    Feb 04, 2021 In both lead and zinc circuits, pyrite is the main sulphide gangue mineral. It is critical to decrease the presence of iron (Fe) and Zn in the lead concentrate during the flotation of galena

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  • FLOTATION OF PYRITE FROM COAL - SECRETARY OF THE

    FLOTATION OF PYRITE FROM COAL - SECRETARY OF THE

    About 0.001 to 0.005 weight percent of pyrite flotation collector is then added and the mixture again conditioned for a period of about 5 seconds to 1 minute. The collector consists of a xanthate, of the formula RO-C-SM, where R is an alkyl radical of at least about 3 carbon atoms and M is a metal such as potassium or sodium. Generally, the

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  • The Adsorption of Cu Species onto Pyrite Surface and Its

    The Adsorption of Cu Species onto Pyrite Surface and Its

    Jan 17, 2016 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

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  • Role of Montmorillonite, Kaolinite, or Illite in Pyrite

    Role of Montmorillonite, Kaolinite, or Illite in Pyrite

    Flotation tests suggested that the detrimental effect of clay minerals on the flotation of pyrite increased as follows: montmorillonite kaolinite illite. With the help of rheology measurements, it was found that montmorillonite significantly increased pulp viscosity, which in turn substantially reduced pyrite

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  • Flotation of Pyrite

    Flotation of Pyrite

    May 03, 2017 The finer the material, the greater is the percentage of recovery; the pyrite should pass at least a 170-mesh screen in order to get efficient flotation under the conditions of the tests. Of the many factors affecting flotation, only two—the oil and the other agent used—were made variable

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  • (PDF) Pyrite Flotation: A Review

    (PDF) Pyrite Flotation: A Review

    Pyrite Flotation: A Review. N. E. Altun and T. G ler. Muğla University, Mining Engineering Depar tment 48000 Muğla, Turkey. . Akdemir. Cumhuriyet University, Mining Engineering Dep artment

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  • Pyrite Flotation - Froth Flotation (Sulphide & Oxide

    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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  • The depression of pyrite in selective flotation by

    The depression of pyrite in selective flotation by

    Pyrite is a gangue mineral widely associated with valuable minerals. It is problematic to deal with in differential flotation because it easily reports to flotation concentrates. Pyrite may float due to natural or self-induced hydrophobicity or collector-induced hydrophobicity

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  • Effects of Pyrite Texture on Flotation Performance of

    Effects of Pyrite Texture on Flotation Performance of

    Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to demonstrate influence of pyrite mineralogy on the flotation of copper (sulphidic) ores and develop alternative conditions to improve the performance

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  • Pyrite Recovery Mechanisms in Coal Flotation

    Pyrite Recovery Mechanisms in Coal Flotation

    Jul 27, 2018 Pyrite Recovery Mechanisms in Coal Flotation. In many coal flotation operations, a significant amount of apparently liberated pyrite is seen to report to the froth, thus raising the sulfur content of the clean product and reducing its economic value. Prevention of this unwanted recovery of pyrite is therefore desirable

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  • Thiocarbonate collectors in pyrite flotation

    Thiocarbonate collectors in pyrite flotation

    The bench-scale flotation procedure was carried out with an auriferous pyrite ore from Lone Tree, Nevada (Simmons, 1997), as described elsewhere (Du Plessis, 2002). Platinum group metal (PGM) bench-scale flotation experiments were carried out at Impala Platinum in

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  • Pyrite Depressant - Froth Flotation (Sulphide & Oxide

    Pyrite Depressant - Froth Flotation (Sulphide & 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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