chemistry of pyrite depression in flotation

chemistry of pyrite depression in flotation

  • The depression of pyrite in selective flotation by

    01/10/2016· The depression of pyrite flotation by cyanide may result from one or more of the following mechanisms: (1) The surface and solution chemistry of pyrite flotation with xanthate in the presence of iron ions Colloids Surf, A, 136 (1–2) (1998), pp 5162 Article Download PDF View Record in Scopus Google Scholar Kar et al, 2013 B Kar, H Sahoo, SS Rath, B Das Investigations onFlotation of pyrite has long been employed in gold ore processing, and it appears that pyrite flotation from coal may become important in the future (1) It is probably a direct consequence of this relative ease of separation, plus the low economic value of pyrite, that detailed investigations on the chemistry of its flotation and depression are relatively limited Gaudin (2,3,4) and othersThe Chemistry of Pyrite Flotation and Depression

  • Surface chemistry of activation of limedepressed 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 other08/10/2015· The Pyrite Depression in a Copper Only Flotation circuit is simple enough If your froth flotation system only tries to recover chalcopyritecopper, 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 pyritePyrite Depression in Copper Flotation

  • (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 wasChemistry Of Pyrite Depression In Flotation The depression of pyrite by lime is attributed to the surface formation of CaOH 2 CaSO 4 and FeOH 3 as determined by XPS analysis Xanthate flotation tests show that oxalic acid and other organic acids as well as sulphuric acid and other inorganic acids and their salts can restore xanthate flotation of pyrite after depression by limeChemistry Of Pyrite Depression In Flotation

  • Chemistry Of Pyrite Depression In Flotation

    Chemistry Of Pyrite Depression In Flotation Grinding media have significant influence on the flotation of chalcopyrite and pyrite This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite This paper investigates the influence of steel ball and nanoceramic ball grinding on the floatability of chalcopyrite and pyrite Flotation results, aschemistry of pyrite depression in flotation MINING This page primarily focuses on metallurgical mining, though many of the terms, processes, and concepts arechemistry of pyrite depression in flotation

  • chemistry of pyrite depression in flotation

    chemistry of pyrite depression in flotation Effect of redox conditions and copper ions on pyrite Redox conditions and stone reactions involved in depression mechanisms of pyrite by MBS or sodium sulfite in seawater are investigated and discussed based on the acidifying effect of MBS oxidation of sulfite ions by dissolved oxygen and the role of catalyst of some metal cations (e g copperThe application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM)(PDF) Depression of Pyrite in Seawater Flotation by Guar Gum

  • chemistry of pyrite depression in flotation

    chemistry of pyrite depression in flotation; chemistry of pyrite depression in flotation the and of are interpreted in terms of mixedpotential mechanisms previous ai vogeltextbook of practical organic Get Price Relate Product Get Quick Quote If you have any problems or questions about our products or need our support and assistance, please contact us and you will be repliedIn lead flotation, pyrite depression is undertaken with inorganic reagents, namely cyanide, ferricyanide and sulfite salts (Ball and Rickard, 1976; Kydros et al, 1994; Bulatovic and Wyslousil, 1995) While in zinc and porphyry copper flotation high pH, adjusted with lime, is the route to depress pyrite The inorganic reagents and lime prevent xanthate adsorption on the pyrite surface (BallPyrite depression by dextrin in flotation with xanthates

  • Effects of Pyrite Texture on Flotation Performance of

    18/10/2021· An alternative flotation chemistry was applied on Ore B using Na 2 S for surface cleaning and NaMetabisulfite (MBS) for pyrite depression in the copper flotation stage The surface cleaning reduced the rate of oxidation of the framboidal pyrite in Ore B As a result, the copper recovery could be increased to 52% Cu for Ore B, and 65% for the mixed ore sampleFlotation studies demonstrated that freshly ground arsenopyrite and pyrite are nonfloatable in the absence of xanthate as a collector or strong ironcomplexing agent: EDTA (hydrophilic) Good flotation was observed for both minerals with EDTA or ethyl xanthate The floatability depends strongly on the pH value and concentration With EDTA the minerals show good floatabilities in the pH rangeThe chemistry of flotation activation and depression of

  • Selective depression of arsenopyrite with in situ

    01/11/2021· In this study, the selective depression of arsenopyrite in pyrite flotation with insitu generated nanoparticles was studied Scanning electron microscope and energy dispersive Xray spectroscopy (SEM/EDS) detection, solution chemistry analysis, fourier transform infrared spectroscopy (FTIR), adsorption tests and contact angle measurement were used to reveal the correspondingChemistry Of Pyrite Depression In Flotation The depression of pyrite by lime is attributed to the surface formation of CaOH 2 CaSO 4 and FeOH 3 as determined by XPS analysis Xanthate flotation tests show that oxalic acid and other organic acids as well as sulphuric acid and other inorganic acids and their salts can restore xanthate flotation of pyrite after depression by limeChemistry Of Pyrite Depression In Flotation

  • Chemistry Of Pyrite Depression In Flotation

    Chemistry Of Pyrite Depression In Flotation Grinding media have significant influence on the flotation of chalcopyrite and pyrite This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite This paper investigates the influence of steel ball and nanoceramic ball grinding on the floatability of chalcopyrite and pyrite Flotation results, aschemistry of pyrite depression in flotation MINING This page primarily focuses on metallurgical mining, though many of the terms, processes, and concepts arechemistry of pyrite depression in flotation

  • chemistry of pyrite depression in flotation

    chemistry of pyrite depression in flotation; chemistry of pyrite depression in flotation the and of are interpreted in terms of mixedpotential mechanisms previous ai vogeltextbook of practical organic Get Price Relate Product Get Quick Quote If you have any problems or questions about our products or need our support and assistance, please contact us and you will be repliedIn lead flotation, pyrite depression is undertaken with inorganic reagents, namely cyanide, ferricyanide and sulfite salts (Ball and Rickard, 1976; Kydros et al, 1994; Bulatovic and Wyslousil, 1995) While in zinc and porphyry copper flotation high pH, adjusted with lime, is the route to depress pyrite The inorganic reagents and lime prevent xanthate adsorption on the pyrite surface (BallPyrite depression by dextrin in flotation with xanthates

  • chemistry of pyrite depression in flotation

    Depression of sphalerite with cyanide and zinc sulphate 102 Chapter 7 Depression of sphalerite with cyanide and zinc sulphate 71 Introduction Cyanide is the only depressant currently used at the Rosh Pinah Mine to depress sphalerite and pyrite in the lead flotation circuit As explained in Chapter 2 cyanide dosages of 150180 g/tdepression of pyrite increased due to the increase in oxidation of surface copper 11 Using sodium glycerinexanthate (SGX), the floatability of pyrite decreased during flotation of chalcopyrite and using sodium butyl xanthate (SBX) as a collector were investigated (Wang et al, 2015) Sodium glycerinexanthate (SGX) and butyl xanthate (SBX) 2015 By using sodium glycerinexanthate (SGX), theA study on the effect of active pyrite on flotation of

  • The role of sodium sulfide in the flotation of pyrite

    School of Chemical Engineering, The University of Queensland, Brisbane, Australia ARTICLE INFO Keywords: Pyrite Depression Flotation Sodium sulfide Sulfidization Surface oxidation products ABSTRACT In coppergold flotation plants, pyrite which is depressed in copper otation is often oated subsequently with the addition of sodium sulfide (Na 2S) to recover the associated gold For theActivation & depression Flotation of chalcopyrite, galena, sphalerite, pyrite Selective flotation PbZn bulk flotation Sulphide minerals are floated by sulphydryl collectors (thiocomponds) Adsorption of Sulphydryl Collectors: Adsorption of sulphydryl collectors may occur mainly by chemisorption at metal ion sites on a surface, and by electrochemical mechanisms Also physisorption mayCHAPTER 7 FLOTATION OF SULPHIDE MINERALS

  • Flotation behaviors of pyrites with different chemical

    01/05/2004· Chemical analyses and mineralogical examinations showed that these pyrite samples have different impurities and structural properties The flotation characteristics of pyrites using ethyl xanthate were similar Zeta potential measurements were carried out to investigate the effects of pH, conditioning time and collector addition on the flotation of pyrites Electrochemical measurements

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