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  • Flotation separation of pyrite from arsenopyrite using

    Flotation separation of pyrite from arsenopyrite using sodium carbonate and sodium humate as depressants. Publication date: Available online 5 March 2020Source: Colloids and Surfaces A: Physicochemical and Engineering AspectsAuthors: Ruizeng Liu, Jialei Li, Yunwei Wang, Dianwen Liu.

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  • US5171428AFlotation separation of arsenopyrite from

    Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings

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  • Flotation separation of pyrite from arsenopyrite using

    Flotation separation of pyrite from arsenopyrite using sodium carbonate and sodium humate as depressants. Publication date: Available online 5 March 2020Source: Colloids and Surfaces A: Physicochemical and Engineering AspectsAuthors: Ruizeng Liu, Jialei Li, Yunwei Wang, Dianwen Liu.

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  • THE SEPARATION OF PYRITE AND ARSENOPYRITE BY FLOTATION

    The efficient separation of pyrite and arsenopyrite by a cheap process such as flotation has long been recognized as a desirable technological goal for ores containing both minerals. A series of novel collectors, based on a different chemistry from conventional xanthates and similar surfactants, has been developed, which might lead to the

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  • Flotation separation of pyrite from arsenopyrite in the

    Four oxidants, NaClO, KMnO 4, K 2 Cr 2 O 7, and H 2 O 2, were used to promote the flotation separation of pyrite FeS 2 from arsenopyrite FeAsS.Ore flotation results indicate that H 2 O 2 has the best selectivity for the AsS separation. When H 2 O 2 is used, the As content in pyrite concentrate decreases from 2.27% without addition of H 2 O 2 to 1.11% with H 2 O 2 dosage of 900 g/t, and

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  • Technical Note The selective otation of arsenopyrite from

    Keywords: Flotation depressants; Flotation reagents 1. Introduction Separation of pyrite and arsenopyrite by otation using xanthates presents diculties due to the fact that xanthates adsorb onto both these minerals as dixanthogen, which is not cation selective. Therefore, a number of separation techniques have been employed by a

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  • SEPARATION OF PYRITE FROM ARSENOPYRITE BY FLOTATION

    A successful separation was seen to be possible employing Fl and by floating pyrite. This was proven by using a mixture of equal amounts of pyrite and arsenopyrite and selectively floating pyrite. Bench and column flotation tests were carried out in order to confirm the results obtained

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  • The flotation separation of pyrite from arsenopyrite using

    The flotation separation of pyrite from arsenopyrite using hexyl thioethylamine as collector.thioethylamine.

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  • PDF Selective separation of pyrite from chalcopyrite and

    Four oxidants, NaClO, KMnO4, K2Cr2O7, and H2O2, were used to promote the flotation separation of pyrite FeS2 from arsenopyrite FeAsS. Ore flotation results indicate that H2O2 has the best

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  • Flotation separation of pyrite from arsenopyrite in the

    Four oxidants, NaClO, KMnO 4, K 2 Cr 2 O 7, and H 2 O 2, were used to promote the flotation separation of pyrite FeS 2 from arsenopyrite FeAsS. Ore flotation results indicate that H 2 O 2 has the best selectivity for the AsS separation.

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  • SEPARATION OF PYRITE FROM ARSENOPYRITE BY

    This thesis reports investigations into the flotation separation of pyrite from arsenopyrite using xanthates and the new collectors Fl, S7 and F2B developed by Dow Chemical Company. The Dow surfactants were classified as chelating collectors by the manufacturer. For

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  • The flotation separation of pyrite from arsenopyrite using

    Dec 01, 2000· The flotation separation of arsenopyrite from pyrite was evaluated by two techniques, i.e. the Hallimond tube and bench flotation tests. The selective flotation of pyrite using the Hallimond tube was tested under a basic set of conditions. In the bench flotation experiments, a synthetic ore sample was prepared.

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  • The flotation separation of pyrite from arsenopyrite using

    Request PDFThe flotation separation of pyrite from arsenopyrite using hexyl thioethylamine as collectorThe floatability of pyrite and arsenopyrite was studied using sodium ethyl xanthate

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  • The selective flotation of arsenopyrite from pyrite

    Separation of arsenopyrite from pyrite is usually achieved by selective depression of arsenopyrite using depressants like cyanide or oxidizing agents e.g., hydrogen peroxide and magnesiaammonia

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  • flotation separation arsenopyriteHitlers Hollywood

    The flotation separation of pyrite from arsenopyrite using. Dec 01 2000 · The flotation separation of pyrite from arsenopyrite using hexyl thioethylamine as collector The experiments were conducted on individual minerals and on the mixtures as a function of pH and collector concentration employing Hallimond tube and bench flotation equipment

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  • The flotation separation of pyrite from arsenopyrite using

    Request PDFThe flotation separation of pyrite from arsenopyrite using hexyl thioethylamine as collectorThe floatability of pyrite and arsenopyrite was studied using sodium ethyl xanthate

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  • EP0568672B1Flotation separation of arsenopyrite from

    Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings

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  • Flotation and depression control of arsenopyrite through

    Separation of arsenopyrite from pyrite is usually achieved by selective depression of arsenopyrite using depressants like cyanide or oxidizing agents e.g., hydrogen peroxide and magnesiaammonia

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  • Depression of Arsenopyrite Flotation and its Separation

    Description. In this paper it is recommended that pyrite is to be separated as froth from arsenopyrite by selective depression of arsenopyrite in strong alkaline medium 1, by oxidation with chlorinated lime II, by couse of chlorinated lime with sodium carbonate III, and by modification with `L reagent knowhow without filtering to get rid of residual copper ions after Cu activation

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  • The Study of Pulp Electrochemical Flotation Separation of

    The studies of pulp electrochemical flotation separation of pyrite and arsenopyrite were made from the thermodynamics, mineral natural oxidation rate, property of mineral surface oxidised material and pulp electrochemical flotation tests. The results showed that although pyrite and arsenopyrite possessed similar thermodynamic stability, significant differences of two minerals were observed in

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  • The flotation separation of pyrite from arsenopyrite using

    Separation tests using HTA were carried out with a Hallimond tube and Denver flotation cell. The selective flotation of pyrite from arsenopyrite was achieved at around pH 11, employing HTA without using any regulators to depress arsenopyrite.

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  • US5171428AFlotation separation of arsenopyrite from

    Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3ions at elevated temperature and pH below about 8 for a period sufficient to

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  • Selective separation of arsenopyrite from pyrite by

    Effective methods for selective separation using flotation or flocculation of arsenopyrite from pyrite by biomodulation using Acidithiobacillus ferrooxidans are presented here. Adhesion of the bacterium to the surface of arsenopyrite was very slow compared to that to pyrite, resulting in a difference in surface modification of the minerals subsequent to interaction with cells.

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  • Flotation Behavior of Arsenopyrite and Pyrite, and Their

    Oct 10, 2020· Park et al. 2015 proposed that, the flotation separation of pyrite from arsenopyrite was possible at high Eh because ferric arsenate; a stable hydrophilic species on arsenopyrite

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  • Selective separation of arsenopyrite from pyrite by

    Effective methods for selective separation using flotation or flocculation of arsenopyrite from pyrite by biomodulation using Acidithiobacillus ferrooxidans are presented here. Adhesion of the bacterium to the surface of arsenopyrite was very slow compared to that to pyrite, resulting in a difference in surface modification of the minerals

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  • Depression of Arsenopyrite Flotation and its Separation

    Description. In this paper it is recommended that pyrite is to be separated as froth from arsenopyrite by selective depression of arsenopyrite in strong alkaline medium 1, by oxidation with chlorinated lime II, by couse of chlorinated lime with sodium carbonate III, and by modification with `L reagent knowhow without filtering to get rid of residual copper ions after Cu activation

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  • Technical Note The selective otation of arsenopyrite from

    Keywords: Flotation depressants; Flotation reagents 1. Introduction Separation of pyrite and arsenopyrite by otation using xanthates presents diculties due to the fact that xanthates adsorb onto both these minerals as dixanthogen, which is not cation selective. Therefore, a number of separation techniques have been employed by a

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  • Enhance flotation separation of arsenopyrite and pyrite by

    Jun 30, 2019· For the bare minerals, the recoveries of arsenopyrite and pyrite reached 92.33% and 99.58%, respectively Figs. 2a and b. It is worth noting that temperature had little effect on the flotation recovery of arsenopyrite and pyrite as well as on the separation efficiency Fig. 2d. A significant difference was observed for the oxidation rates of

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  • PDF Selective Flotation of Pyrite from Arsenopyrite by

    In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals.

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  • Flotation separation of pyrite from arsenopyrite using

    Jun 20, 2020· Using copper sulfate is required in achieving flotation separation under weak alkaline. HA alone could depress the arsenopyrite flotation and show good selectivity towards pyrite. Interestingly, compared to the single depressant of sodium humate, higher pyrite and lower arsenopyrite recoveries were obtained when using the combination.

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  • Electronic and chemical structures of pyrite and arsenopyrite

    Flotation separation of pyrite from arsenopyrite in the presence of oxidants. Separation Science and Technology, p. 1.As atoms could be one of the active sites for the oxidation of arsenopyrite. In addition, separation of arsenopyrite and pyrite could be achieved by utilizing the difference in chemical reactivities of iron in the two

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  • The selective flotation of arsenopyrite from pyrite

    Separation of arsenopyrite from pyrite is usually achieved by selective depression of arsenopyrite using depressants like cyanide or oxidizing agents e.g., hydrogen peroxide and magnesiaammonia

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  • The flotation separation of pyrite from arsenopyrite using

    Four oxidants, NaClO, KMnO4, K2Cr2O7, and H2O2, were used to promote the flotation separation of pyrite FeS2 from arsenopyrite FeAsS.

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  • flotation of gold ores in pyrite and arsenopyriteMC

    WO1993010904A1Flotation separation of arsenopyrite from . Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite.

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  • US2342277ASeparation of pyrite, arsenopyrite, and

    US2342277A US474491A US47449143A US2342277A US 2342277 A US2342277 A US 2342277A US 474491 A US474491 A US 474491A US 47449143 A US47449143 A US 47449143A US 2342277 A US2342277 A US 2342277A Authority US United States Prior art keywords arsenopyrite pyrite flotation pyrrhotite permanganate Prior art date 19430202 Legal status The legal status is an assumption

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  • Selective Flotation of Pyrite from Arsenopyrite by Low

    In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals. The microflotation experiments results indicated that plasma pretreatment can achieve selective flotation of arsenopyrite from pyrite. The XPS analysis results indicated that the oxidation

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