pyrrhotite flotation

  • Pyrrhotite Depressant in Polymetallic Flotation Froth

    In polymetallic ore pyrrhotite does not compete very well for collectors, and the use of starvation dosages is far more effective than trying to depress pyrrhotite once it has been activated. The number two depressant is lime. In general, flotation of pyrrhotite is depressed in

  • A review of pyrrhotite flotation chemistry in the

    1. Introduction. Pyrrhotite is one of the most abundant iron sulfide minerals. It is found in nature to be commonly associated with pentlandite, quartz, ankerite (CaFe(CO 3) 2), pyrite, chalcopyrite, and other sulfide minerals.In many flotation plants, pyrrhotite is rejected to the flotation tailings as a waste product such as in the case of Cu–Ni ores and massive nickel ores (Fornasiero et

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  • CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

    conventional flotation technique, and the possibility of replacing DETA with cheaper polymer depressants in pentlandite pyrrhotite flotation separation. 3.3 EXPERIMENTAL 3.3.1 Mineral Samples A sample from the rod mill feed at the Strathcona concentrator, Falconbridge Ltd., was used for flotation

  • 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

  • The flotation of magnetic and non-magnetic pyrrhotite from

    The non-stoichiometric sulfide mineral pyrrhotite (Fe (1− x) S), common to many nickel ore deposits, occurs in different crystallographic forms and compositions. A series of pyrrhotite samples derived from Canada, South Africa and Botswana whose mineralogy is well characterised, were selected here in order to develop the relationship between mineralogy and flotation performance.

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  • The Effect of Conditioning on the Flotation of Pyrrhotite

    The influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was investigated through flotation tests, sedimentation tests, and X-ray photoelectron spectroscopy (XPS) analysis. The flotation results show that chlorite slimes dramatically impair the flotation of pyrrhotite. Sedimentation and flotation tests reveal that conditioning can effectively remove chlorite

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  • Pyrrhotite an overview ScienceDirect Topics

    Monoclinic pyrrhotite, however, in contrast to hexagonal pyrrhotite, is magnetic and is recovered in magnetic concentrates. Previous research (Cline and Rosas, 1975; Iwasaki, 1999) has shown that flotation can be used to remove pyrrhotite. The Marcona Mine in Peru uses a reverse flotation process to float pyrrhotite from the magnetite.

  • Flotation of pyrrhotite to produce magnetite concentrates

    In practice, therefore, collector is necessary for the flotation of pyrrhotite. Early work on pyrrhotite flotation appeared to have concentrated on the use of a single collector. Chang et al. (1954) stated that xanthate is a good collector for pyrrhotite.

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  • Copper activation option for a pentlandite–pyrrhotite

    The final flotation recoveries of the sulphide minerals in the ore followed the same trend as the decrease in mineral potential due to collector addition viz. chalcopyrite > pentlandite > pyrrhotite.

  • Electrochemical & Magnetic Interactions in Pyrrhotite

    Flotation tests were carried out on the pyrrhotite sample to investigate the effect of galvanic contact with mild steel and stainless steel on floatability. Initially, a series of flotation tests were carried out to determine the concentration of a collector, potassium n-butyl xanthate, needed to attain full recovery of the pyrrhotite.

  • Flotation recovery–by–size comparison of pyrrhotite

    Hexagonal pyrrhotite follows conventional flotation recovery by particle size (highest in intermediate fractions; 10–100 μm) while monoclinic pyrrhotite is mainly recovered in the finest fractions (<10 μm) where entrainment effects have been mitigated (Lawson et al., 2014, Multani and Waters, 2017). This trend has been observed in many

  • The Effect of Oxidation on the Flotation Behaviour of

    and flotation of remaining pyrrhotite and other sulphides. As may be noted from Figure I, the flotation rates of chalcopyrite and pentlandite are much higher than that of pyrrhotite. Thus, with its marginal pyrrhotite content, the primary rougher concentrate constitutes a suitable feed for the copper-nickel

  • (PDF) FLOTATION OF PYRRHOTITE FROM MAGNETITE ORES

    Since the flotation process is based on the surface properties of the sulphide minerals and pyrrhotite is a metallic conductor, it is of interest to characterise the surface properties of

  • Depressants for Pyrrhotite / Flotation depressants

    Flotation results indicate that PIONERA BioPolymers, at each dosage, significantly reduce pyrrhotite more than conventional depressants. Additionally, conventional pyrrhotite depressants such as sodium cyanide, sodium hydro sulfide and Nokes reagent are toxic, highly regulated, difficult to handle and present an overall costly alternative.

  • Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

    One of the more common classes of ores containing gold is when gold is associated with pyrite, pyrrhotite, and arsenopyrite. This is the area of gold recovery that has probably received the most research and plant optimization support especially in light of the long history of South African industrial practice. From a reagent viewpoint, charged water soluble collectors such as xanthates

  • (PDF) Pyrite and pyrrhotite open circuit potentials study

    The prior addition of PGA achieved an improved selective flotation of chalcopyrite from pyrrhotite at pH 8, at which the grade and recovery of chalcopyrite in concentrate were over 80%.

  • The problem with pyrrhotite International Mining

    XPS is an industry leader in understanding and minimizing the effect of pyrrhotite on metallurgical performance. “Ore minerals in base metal sulphide deposits are often mixed with sulphide gangue which must be removed by flotation in order to produce a saleable concentrate.

  • Electrochemistry Flotation Pentlandite & Pyrrhotite

    Ore Flotation. Recoveries for the 15 min. (“coarse”) grind were low: some 42 of the feed being floated. Grinding the ore to the finer size (30 min. grind) significantly increased the flotation response, the chalcopyrite, pentlandite and pyrrhotite recoveries increasing from 27.3-87.9, 13.4-69.3, 4.8-17.2% respectively, using DOW 1263 as a

  • (PDF) A review of pyrrhotite flotation chemistry in the

    The chemistry of pyrrhotite flotation using xanthate collectors is reviewed with respect to the processing of PGM ores and the recent results from captive bubble contact angle measurements at the University of Utah are presented. In some cases a low

  • The Effect of Conditioning on the Flotation of Pyrrhotite

    In this paper, the influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was studied. Furthermore, the interacting mechanisms were also discussed for providing guidance for further study. 2. Materials and Methods 2.1. Samples and Reagents

  • (PDF) Pyrite Flotation: A Review ResearchGate

    A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

  • Effect of chlorite on the flotation of pyrrhotite and its

    The effect of chlorite on the flotation of pyrrhotite was systematically investigated through flotation tests, adsorption studies, optical microscopy experiments, inductively coupled plasma emission spectrometer tests, zeta potential measurements, and X-ray photoelectron spectroscopy analysis.

  • The Effect of Conditioning on the Flotation of Pyrrhotite

    The influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was investigated through flotation tests, sedimentation tests, and X-ray photoelectron spectroscopy (XPS) analysis. The flotation results show that chlorite slimes dramatically impair the flotation of pyrrhotite. Sedimentation and flotation tests reveal that conditioning can effectively remove chlorite

  • Some aspects of the electrochemistry of the flotation of

    The iron sulfide mineral, pyrrhotite (Fe(1-x)S), has long been known to be more difficult to recover by flotation from alkaline slurries than many other base metal sulfide minerals. This paper summarizes the results of an electrochemical study of the surface reactions that occur during the flotation of nickeliferous pyrrhotite in the recovery of nickel and the platinum group metals.

  • (PDF) Pyrite Flotation: A Review ResearchGate

    A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

  • Effect of chlorite on the flotation of pyrrhotite and its

    The effect of chlorite on the flotation of pyrrhotite was systematically investigated through flotation tests, adsorption studies, optical microscopy experiments, inductively coupled plasma emission spectrometer tests, zeta potential measurements, and

  • The Effect of Conditioning on the Flotation of Pyrrhotite

    The influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was investigated through flotation tests, sedimentation tests, and X-ray photoelectron spectroscopy (XPS) analysis. The flotation results show that chlorite slimes dramatically impair the flotation of pyrrhotite. Sedimentation and flotation tests reveal that conditioning can effectively remove

  • Some aspects of the electrochemistry of the flotation of

    The iron sulfide mineral, pyrrhotite (Fe(1-x)S), has long been known to be more difficult to recover by flotation from alkaline slurries than many other base metal sulfide minerals. This paper summarizes the results of an electrochemical study of the surface reactions that occur during the flotation of nickeliferous pyrrhotite in the recovery of nickel and the platinum group

  • US2342277A Separation of pyrite, arsenopyrite, and

    flotation pyrrhotite permanganate Prior art date 1943-02-02 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US474491A Inventor Earl C Herkenhoff

  • Minerals Free Full-Text The Depression and Adsorption

    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 non-hazardous reagent, polyglutamic acid (PGA), on pyrrhotite in the selective flotation of chalcopyrite with xanthate as the collector, making use of various laboratory-scale

  • Method of pyrrhotite-bearing ores flotation

    Activator flotation of pyrrhotite is the presence in the slurry of copper ions [1]. Known ability of pyrrhotite intensively to absorb oxygen from the liquid phase of the pulp caused by the oxidation of the surface of the mineral, as well as to the formation of sludge during grinding.

  • The flotation of magnetic and non-magnetic pyrrhotite from

    The flotation of magnetic and non-magnetic pyrrhotite from selected nickel ore deposits

  • Modelling of pyrite depression process by lime in copper

    complete flotation of the above sulphides was -11,3 (Figure 3, a) in the presence of butyl xanthate and lime. The values of logK for the complete depression and flotation of pyrrhotite at this conditions were -15,8 and 13,3 and of chalcopyrite-16,0 and -14,2 correspondingly. The maximum difference of chalcopyrite floatability

  • An investigation into the flotation behaviour of pyrrhotite

    Download Citation An investigation into the flotation behaviour of pyrrhotite It is well-known that pyrrhotite is a slow floating mineral and there are many studies investigating its

  • The Desulfurization of Magnetite Ore by Flotation with a

    The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from magnetite using collectors of xanthate and dixanthogen. It was found that xanthate or dixanthogen alone could not achieve selective separation between pyrrhotite and magnetite in flotation.

  • Pyrrhotite Definition of Pyrrhotite by Merriam-Webster

    Pyrrhotite definition is a bronze-colored mineral of metallic luster that consists of ferrous sulfide and is attracted by a magnet.

  • Pyrrhotite: Mineral information, data and localities.

    Pyrrhotite is found with pentlandite in basic igneous rocks, veins, and metamorphic rocks. It is also often found with pyrite, marcasite, and magnetite. It has varying magnetic powers, depending on the number of Fe vacancies in the crystal structure. A related species with no vacancies (and therefore non-magnetic), is called troilite and has

  • Flotation performances of polymorphic pyrrhotite

    The floatability of different crystalline structures of pyrrhotite (monoclinic and hexagonal) was studied. It is shown that the floatability of monoclinic and hexagonal has obvious difference, and that the flotation recovery of monoclinic pyrrhotite is larger than that of hexagonal pyrrhotite using different collectors. When butyl dithiophosphate is used as the collector, the recovery is