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  • Pyrrhotite - An Important Gangue and a Source for
    Pyrrhotite - An Important Gangue and a Source for

    Pyrrhotite - An Important Gangue and a Source for Environmental Pollution. Pyrrhotite crystallises as either a hexagonal or monoclinic structure, both of which can occur in ore deposits. In general, pyrrhotite is not considered as a valuable mineral unless it contains considerable amounts of other metals like nickel or copper. In fact it causes numerous problems in flotation including intensive oxygen

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  • Pyrrhotite - an overview | ScienceDirect Topics
    Pyrrhotite - an overview | ScienceDirect Topics

    G.V. Rao, in Encyclopedia of Separation Science, 2000 Developments in Flotation Flotation of Nickel Sulfide Minerals Collectorless flotation. It is known that chalcopyrite and pyrrhotite can be floated without collectors at electrode potentials of +400 mV and +50 mV respectively, and pyrite does not float even at +700 mV. The underlying mechanism causing hydrophobicity, although obscure, is

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  • Integrated environmental management of pyrrhotite tailings
    Integrated environmental management of pyrrhotite tailings

    The aim of this project is to assess the efficiency of pyrrhotite rich tailings desulfurization and its capacity to make mine operations more sustainable and respectful to the environment. The Raglan mine ore concentrator produces acid-generating tailings, which contain pyrrhotite, that

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  • Physical Separation of Thermally Upgraded Pyrrhotite
    Physical Separation of Thermally Upgraded Pyrrhotite

    converting pyrrhotite (Fe 1-x S) to a ferronickel alloy (FeNi) and troilite (FeS). This thesis focuses on physically separating the FeNi and FeS phases, by either froth flotation or magnetic separation. The variables studied for froth flotation are pH, particle size, and additive concentrations

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  • Pyrrhotite oxidation and its influence on alkaline amine
    Pyrrhotite oxidation and its influence on alkaline amine

    Feb 01, 2015 Feb 01, 2015 A potential reduction in collector consumption would represent environmental and economic benefits for GCC producers. 6. Conclusions. This study has demonstrated that the recovery of pyrrhotite in the alkaline amine flotation used in GCC production is highly dependent on the degree of surface oxidation

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  • Cyanidation of a pyrrhotite-bearing gold ore
    Cyanidation of a pyrrhotite-bearing gold ore

    Pyrrhotite is in much higher concentration than gold in a gold ore. The oxygen requirement by the pulp will depend on the concentration of pyrrhotite in the ore and the degree of oxidation of its surface. A study on hexagonal pyrrhotite indicated a very low solubility in aerated cyanide solutions (Linge, 1995)

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  • Pyrrhotite Cathodic Decomposition - 911 Metallurgist
    Pyrrhotite Cathodic Decomposition - 911 Metallurgist

    May 18, 2018 May 18, 2018 The micro-flotation tests of pyrrhotite were performed using 10- M KEX with and without cathodic treatment, and the results are presented in Figure 8. It is evident that the pyrrhotite floated well in the presence of the collector without cathodic treatment. However, the floatability of pyrrhotite decreased with cathodic treatment

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  • Flotation of Nickel-Copper Sulphide Ore: Optimisation
    Flotation of Nickel-Copper Sulphide Ore: Optimisation

    2. 2. Flotation Procedure All the flotation test-work was done using the Denver laboratory machine with a 1.5l stainless steel flotation cell. The required mass of nickel-copper sulphide ore material ground to 70% passing 75 m was weighed and placed in the flotation cell. This was followed by the addition of distilled water to about

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  • The Desulfurization of Magnetite Ore by Flotation with a
    The Desulfurization of Magnetite Ore by Flotation with a

    problem in iron ore smelting process. However, the magnetic separation of pyrrhotite from magnetite is problematic, due to their similar magnetic property and magnetic flocculation between pyrrhotite and magnetite [3]. Flotation has been commercially used as a method for removing pyrrhotite from magnetite for high sulfurous iron ores [4]

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  • RISODWLQLIHURXVFRSSHUDQGQLFNHOVXOILGHV
    RISODWLQLIHURXVFRSSHUDQGQLFNHOVXOILGHV

    May 24, 2019 May 24, 2019 directly before being added into the flotation cell instead of adding them as separate components is that this technique avoids additional dissolution procedure. The mineral fractions of pyrrhotite, chalcopyrite and pentlandite were from the Monchegorsk ore and the sample of low-sulfide ore was from the Fedorova Pana deposit in Russia

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  • Effective & Technically Advanced Mining Machines - TUAM
    Effective & Technically Advanced Mining Machines - TUAM

    flotation cell bucket elevator spiral classifier ... high quality environmental ferrosilicon rod mill for sale in jos shaking table english copper steam dryers rotary manufacturer usa stone crusher on sale in california ... high end pyrrhotite briquette making machine sell at a loss in harare

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  • Development of a Combined Flotation and High
    Development of a Combined Flotation and High

    2.2. Flotation Circuit The flotation experiments were performed in a 0.5 L mineral separator (MS) type laboratory flotation cell to upgrade recoveries of Cu and Ni (bulk flotation) from mine tailing. In flotation tests, an appropriate weight of the mine tailing sample was poured into 500 mL of water to prepare slurry/feed with different

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  • Improved Cleaner CIrCuIt performanCe at the degrussa
    Improved Cleaner CIrCuIt performanCe at the degrussa

    flotation cells are listed in able 1.t the rougher/scavenger flotation circuit consistently recovers 91% of the total copper sulphide minerals, with the greatest loss typically being from the 75 m and 7 m size fraction. the enrichment ratio on the rougher/scavenger flotation stage is around 4.5 to 5.0. the

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  • Optimisation of Reagent Addition during Flotation of a
    Optimisation of Reagent Addition during Flotation of a

    Sep 13, 2015 Sep 13, 2015 pyrrhotite recovery. Pyrrhotite, although containing nickel, reduces the concentrate grade and may need to be depressed in the latter stages of flotation to ensure the final concentrate specification is achieved. This is an important observation as any

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