pyrite flotation depression -

  • Pyrite Depression in Copper Flotation

    08-10-2015 · The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper,

  • 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) Cyanide may depress pyrite flotation by replacing xanthate ions on pyrite surface, similar to hydroxyl ions (Wark and Cox, 1934, Prestidge et al., 1993).

  • The depression of pyrite in selective flotation by ...

    Introduction. Pyrite (FeS 2, iron disulfide), is the most abundant sulfide mineral and commonly associated with valuable minerals such as sphalerite, chalcopyrite, galena, gold as well as coal (Wang and Forssberg, 1991, Wang, 1995, Dimitrijevic et al., 1996, Jiang et al., 1998).Pyrite has very low economic significance and is usually removed from the valuable components by

  • 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

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

    The 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).

  • Pyrite Depression - Froth Flotation (Sulphide & Oxide ...

    Pyrite floats at very low pH or gets entrapped during flotation. Column flotation will give good results for such problems. It has forth washing system where entrapped minerals are separated, to get very clean concentrate. 4 years of R&D in RDM proved to reduce silica from 7 to 3% in Zinc cleaning in column with very low pyrite.

  • The role of sodium metabisulphite in depressing pyrite in ...

    01-10-2019 · Therefore, the depression effect of MBS on pyrite flotation is more likely through the interference of copper activation on pyrite surface, which weakens the interaction between collectors and pyrite surface. 3.1.2. The effect of MBS dosing points on pyrite depression

  • 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

  • (PDF) Diethylenetriamine depression of Cu-activated pyrite ...

    Pyrite depression in copper ore flotation often requires large doses of inorganic depressants that lead to high toxicity, high costs, and low selectivity.

  • (PDF) Pyrite Flotation: A Review - researchgate.net

    Pyrite Flotation: A Review. N. E. Altun and T. Güler. Muğla University, Mining Engineering Depar tment 48000 Muğla, Turkey. Ü. Akdemir. Cumhuriyet University,

  • Depression of pyrite in seawater flotation by guar-gum

    Depression of Pyrite in Seawater Flotation by Guar Gum César I. Castellón 1 , Eder C. Piceros 2 , Norman Toro 3,4 , Pedro Robles 5 ,

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

    The 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).

  • 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.

  • Selective depression of arsenopyrite with in situ ...

    01-11-2021 · In this study, the selective depression of arsenopyrite in pyrite flotation with in-situ generated nanoparticles was studied. Scanning electron microscope and energy dispersive X-ray spectroscopy (SEM/EDS) detection, solution chemistry analysis, fourier transform infrared spectroscopy (FTIR), adsorption tests and contact angle measurement were used to reveal

  • The role of sodium metabisulphite in depressing pyrite in ...

    01-10-2019 · Therefore, the depression effect of MBS on pyrite flotation is more likely through the interference of copper activation on pyrite surface, which weakens the interaction between collectors and pyrite surface. 3.1.2. The effect of MBS dosing points on pyrite depression

  • Pyrite Depression with Pionera Biopolymers - Borregaard

    Initial laboratory flotation experiments and a full-scale plant trial revealed that Pionera F-250 biopolymer could replace cyanide as a pyrite depressant at the Tara mine in Ireland. The use of Pionera F-250 gives flotation recoveries similar to the use of cyanide as a pyrite depressant. For the mine, the replacement of cyanide as a pyrite ...

  • (PDF) The Depression and Adsorption Mechanism of ...

    24-08-2019 · The rejection of pyrrhotite and pyrite has become a long-standing problem in the copper ore industry. This paper describes the first successful depression and adsorption mechanism of a novel and ...

  • 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

  • The chemistry of flotation activation and depression of ...

    Flotation is completely depressed for concentrations ≥10-2M. The principles for rendering the minerals hydrophobic by EDTA and xanthates are also discussed in this thesis. Studies of the activation of sphalerite, arsenopyrite, pyrite and pyrrhotite by Cu(II) ions by using adsorption tests and cyclic voltammetry showed that the activation reactions between the sulphides and

  • Depression of pre-activated Sphalerite (in situ) in ...

    My experience of lead activated sphalerite (Mt Isa, Hilton, Elura, NevesCorvo) is that soda ash (Na2CO3) added into the mill in combination with zinc sulphate and metabisulphite (MBS) to the mill, or before aeration and collector addition, can

  • Depression of pyrite in seawater flotation by guar-gum

    Depression of Pyrite in Seawater Flotation by Guar Gum César I. Castellón 1 , Eder C. Piceros 2 , Norman Toro 3,4 , Pedro Robles 5 ,

  • Depression of pyrite flotation by yeast and bacteria ...

    01-11-1999 · The flotation response of the coal pyrite was completely different from the mineral pyrite. The coal pyrite was most floatable near neutral pH, with the floatability decreasing in acidic or alkaline solutions. Depression of the coal pyrite by yeast was not selective between the pyrite and the associated coal under the experimental conditions.

  • Depression of pyrite in porphyry copper flotation

    Pyrite Recovery [%] Limited depression of pyrite with lime Flotation tests on plant rougher con (60% Cp, 18% Py) (Ore 1) Pyrite is Cu and xanthateactivated 0 20 40 0 4 8 12 16 20 time [min] pH 12 with Lime baseline (pH 10) 0 20 40 0 20 40 60 80 100 Chalcopyrite Recovery [%] pH 12 with Lime baseline (pH 10)

  • (PDF) The Depression and Adsorption Mechanism of ...

    24-08-2019 · The rejection of pyrrhotite and pyrite has become a long-standing problem in the copper ore industry. This paper describes the first successful depression and adsorption mechanism of a novel and ...

  • Pyrite Depression with Pionera Biopolymers - Borregaard

    Initial laboratory flotation experiments and a full-scale plant trial revealed that Pionera F-250 biopolymer could replace cyanide as a pyrite depressant at the Tara mine in Ireland. The use of Pionera F-250 gives flotation recoveries similar to the use of cyanide as a pyrite depressant. For the mine, the replacement of cyanide as a pyrite ...

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

    18-10-2021 · 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.

  • Minerals | Free Full-Text | A Novel Method to Limit the ...

    10-12-2018 · The flotation results showed that coarser serpentine possessed a weaker depression effect on the pyrite flotation process, and the use of KAl(SO4)2·12H2O could efficiently limit the detrimental effect of fine serpentine on pyrite with a maximum increase of pyrite recovery from 14% to 86% at pH 9.0.

  • THE INFLUENCE OF CYANIDE SALTS AND FERROUS SULPHATE ON ...

    depression. Keywords: pyrite, flotation, ferrous sulphate, cyanide salts, depression Introduction Pyrite, which often accompanies nonferrous metal sulphide ores, is routinely depressed at certain stages of selective flotation or extracted into a separated concentrate. In ...

  • The depression of quartz in sulphide flotation

    hence depression of the gangue minerals in the flotation of sulphides from an artificial pyrite-quartz mixture. Flotation . of . any given mineral is intimately bound up with the degree of dispersion or flocculation of that mineral in the pulp and it may be aaid(l4) that flotation is not (14) Wark, I.i. Principles of Flotation.

  • Enhancing flotation separation of chalcopyrite and ...

    18-03-2021 · Using oxalic acid to eliminate the slime coatings of serpentine in pyrite flotation. Miner. Eng. 149, ... C. I. et al. Depression of Pyrite in