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Zinc flotation pyrite problem

  • Depression of pyrite in the flotation of high pyrite low
    Depression of pyrite in the flotation of high pyrite low

    Jan 01, 2010 The pyrite flotation rate constant decreased significantly when A. ferrooxidans interacted with the flotation pulp for 20 min. 7. Validation experiments with different frothing times showed that in the presence of A. ferrooxidans , 74% of sphalerite was floated and the Zn grade surged to 26.21%, while the recovery of pyrite was only 15.82%

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  • Pyrite depression by dextrin in flotation with xanthates
    Pyrite depression by dextrin in flotation with xanthates

    2004). Pyrite depression with dextrin occurs around pH 8 so using dextrin could lower the pH in flotation processes operating at high pH such as the flotation of copper in porphyry ores and flotation of zinc in polymetallic base-metal sulfide ores. Furthermore, dextrin could be

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  • CHAPTER 7 FLOTATION OF SULPHIDE MINERALS
    CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

    This cyanide complex depresses pyrite from about pH 6 to pH 11. Above pH 11 the stable species on pyrite surface is Fe(OH)3. 3. 2Sulphite as depressant (SO 3 -) Since dixanthogen is the species responsible for pyrite flotation -X 2 + 2e 2X-E 0 = -0.06 volt

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  • Critical importance of pH and ... - Scientific Reports
    Critical importance of pH and ... - Scientific Reports

    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

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  • Flotation data for the design of process plants Part 2
    Flotation data for the design of process plants Part 2

    and zinc flotation circuit (the Hellyer Project) The Hellyer Project was developed by Aberfoyle Limited and proceeded from discovery in 1983 to production in 6 years.1 The 156 106 t orebody consisted of ne grained massive sulphide containing copper, lead, zinc and silver minerals with gold in a predominantly pyrite matrix

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  • Zinc Process And Ore Flotation
    Zinc Process And Ore Flotation

    Zinc Process And Ore Flotation. The Problem Of Treating Oxidized Leadzinc Ores For The Production Of Highgrade Lead Zinc Concentrates Is A Complex Problem Due To The Nature Of The Ores And To The Soft Sliming Characteristics Of The Lead And Zinc Minerals The Ore For Treatment Is A Leadzinc Carbonate Ore In A

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  • Preferential Flotation of a Refractory Cu-Pb-Zn
    Preferential Flotation of a Refractory Cu-Pb-Zn

    Zinc of goethite spinel Na0.47 7.18 Zinc oxide 0.24 3.66 Other 0.11 1.68 Total 6.55 100.00 Disseminated Characteristics of the Main Minerals in the Ore. Chalcopyrite, mainly in the form of irregular monomineral, is disseminated in the crystal and broken cracks of granular minerals ,such as quartz, pyrite and calcite

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  • THE EFFECT OF SULPHITE ON THE XANTHATE-INDUCED
    THE EFFECT OF SULPHITE ON THE XANTHATE-INDUCED

    Froth flotation is widely used for separating sulphide minerals in complex ores. Typical examples in sequential separation of sulphides include sphalerite and pyrite depression during galena and/or chalcopyrite flotation. A common problem for copper-zinc-iron mineral selectivity is related to the unintentional activation of pyrite

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  • FINE SULFIDES IN THEIR FLOTATION P. Somasundaran
    FINE SULFIDES IN THEIR FLOTATION P. Somasundaran

    stenau and Misra observed similar flotation for pyrite and chalcopyrite and, to a lesser extent, for sphalerite. While such observations and counter-observations contin-ued without resolution of the actual problem, a note-worthy contribution came in 1977 from Heyes and Trahar

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  • Lead-Zinc ores - Danafloat
    Lead-Zinc ores - Danafloat

    The zinc concentrate is actually the tails from this bulk separation step. The flotation tailing is the zinc concentrate. If the silver is associated with the galena, the silver reports to the lead concentrate. While pyrite is fairly easy to depress with lime, pyrrhotite is more difficult to depress

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  • Selective separation of galena and sphalerite from
    Selective separation of galena and sphalerite from

    pyrite, dolomite, calcite, are the main gangue minerals. In addition, carbonates are present among the gangue minerals [1]. The presence of high amounts of pyrite and carbonaceous matters are detrimental to the concentration of lead and

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  • DE-ZINCING OF LEAD-COPPER SULPHIDE MINERALS
    DE-ZINCING OF LEAD-COPPER SULPHIDE MINERALS

    the flotation separation is difficult when lead, cop-per and zinc need to justify concentration into three perfect separate products. Flotation problems in general are due to geological origin; hence, the ore have controlling influence on flotation practice. More specifically, the resultant copper or lead ions

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  • Flotation experiment research on a polymetallic sulfide
    Flotation experiment research on a polymetallic sulfide

    In addition, the pyrite content varies among ores. The concentrate products of copper, lead, and zinc can be obtained via flotation separation. The concentrate products of sulfur can be obtained only when the ore’s pyrite content is high. Gold and silver can be recovered from the concentrates of copper, lead, and zinc or from the products of

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  • Effects of Pyrite Texture on Flotation Performance of
    Effects of Pyrite Texture on Flotation Performance of

    Oct 18, 2021 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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  • Chalcopyrite (Cu) Sphalerite (Zn) Separation by
    Chalcopyrite (Cu) Sphalerite (Zn) Separation by

    Apr 14, 2016 The Problem with separating Copper from Zinc by flotation. The treatment of heavy sulphide ores of copper containing zinc and pyrite is often extremely difficult particularly if soluble copper and sulphates are present. This is usually the case in ore deposits near the surface or in tropical countries where the annual rainfall is quite high

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  • Improvement of zinc bioleaching from a zinc
    Improvement of zinc bioleaching from a zinc

    Mar 15, 2021 Zinc sulphide concentrates are conventionally treated by roasting-leaching-electrowinning technology which has some environmental and technical problems especially for pyritic concentrates. Processing of complex zinc ores using bioleaching technology has been increased in order to respond to the considerable demand for zinc metal ( Haghshenas et al

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  • Technical Note Cyanide elimination from lead-zinc
    Technical Note Cyanide elimination from lead-zinc

    Cyanide elimination from lead-zinc flotation N. Magdalinovic1,M. Trumic1,*, Z. Petkovic2, V. Rajic2 1 University of Belgrade, ... process was introduced using the cyanide as depressant for the sphalerite and pyrite. The cyanide was ... Since it is much simpler and more economical to solve pollution problems by removing the causes or by

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  • Method of floatation of copper-zinc-pyrite ore (versions)
    Method of floatation of copper-zinc-pyrite ore (versions)

    The invention achieves the following effect: low floatability of pyrite in all technological operations; high and selective recovery of sulphides of copper and zinc in the production of marketable concentrates; the allocation of a significant part of zinc concentrate (more than 70% of the total mass) in the ore flotation after conducting collective copper-zinc flotation, which reduces the

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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

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  • Stabilization of lead and Zinc Flotation Circuits - SGS
    Stabilization of lead and Zinc Flotation Circuits - SGS

    process control equipment needs in conjunction with extension of zinc flotation cell residence time. This paper will describe the metallurgy of the Galmoy operation. Reasons for the poor metallurgy experienced in . 2002 will be described, as well as the solutions identified to overcome these problems. By the second quarter of

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  • (PDF) Evaluation of lead zinc ore tailings by flotation
    (PDF) Evaluation of lead zinc ore tailings by flotation

    Evaluation of tailings from processing plants is always an important issue. Lead-Zinc ore tailings containing 3.12% Zn, 3.43% Pb, 0.71 g/t Au and 74 g/t Ag was subject to this study. Flotation

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  • FINE SULFIDES IN THEIR FLOTATION P
    FINE SULFIDES IN THEIR FLOTATION P

    loss in the flotation of the 85% minus 44 ~ feed is in the minus 5 p.'t1 size fraction (1). The problem of loss of finely disseminated values during sulfides processing has been illustrated best by Arbiter recently in his discussion of the processing of New Brunswick zinc-lead-copper ores

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  • How to Process Lead-Zinc Ore by Gravity and Froth
    How to Process Lead-Zinc Ore by Gravity and Froth

    Jul 12, 2021 In the beneficiation of lead-zinc ore, flotation is an important process. Mixing in mixing tank: After the ground pulp is classified by the classifier, it enters the mixing tank for mixing. Control the slurry concentration at 25-35%, then add flotation agent to control the slurry pH value 9-11 and stir it for 6-15 min

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