Peculiarities of flotation of pyrite of one of copper-zinc ...

The paper describes the behavior and kinetics of different particle size fractions of non-activated in self-aerated cell, and their response to changes in type of sulfydryl collector, collector dosage and pH. The samples of fine –44+0 μm, medium –74+44 μm and coarse –100+74 μm were used as a feed in froth experiments.

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  • Pyrite depression in copper flotation

    Pyrite depression in copper flotation

    Hi all, i just wanted to find out if there are effective and insoluble depressants . The situation is that every time we dose a depressant to our stream, we end up ...

  • of Pyrite in Seawater Flotation by Guar Gum

    of Pyrite in Seawater Flotation by Guar Gum

     Pyrite flotation recovery was correlated with  and  characterization to delineate the pyrite depression mechanisms by the guar gum.

  • Depressants for Pyrite / Flotation depressants ...

    Depressants for Pyrite / Flotation depressants ...

    The efficiency of PIONERA BioPolymer versus sodium cyanide recovery PIONERA BioPolymers can offer a significant economic advantage in of iron/sulfur bearing minerals in reducing smelter penalties, increasing grade and recovery of metallic concentrates.

  • PDF Selective depression of pyrite with polyacrylamide ...

    PDF Selective depression of pyrite with polyacrylamide ...

    activation of is mainly responsible for the high of this mineral in alkaline pH conditions, while its is due to the higher proportion of surface oxidation products inhibiting collector adsorption, orrand a reduced stability of collector such as dixanthogen ŽShen et al., 1998..

  • Pyrite depressant useful in flotation separation ...

    Pyrite depressant useful in flotation separation ...

    While a vast array of reagents for pyrite depression have been proposed and reported, we are unaware of use of 2-S thiouronium ethane sulfonate IESA as a pyrite depressant during both coal and copper sulfide flotation operations, and moreover, we are surprised by the effectiveness thereof in such operations. SUMMARY OF THE INVENTION

  • An Improved Flotation Test Method and Pyrite Depression by ...

    An Improved Flotation Test Method and Pyrite Depression by ...

     · "Flotation of copper-molybdenum sulphide ores in seawater entails critical challenges such as selective recovery of molybdenite, effective pyrite depression, and reducing the lime addition required to reach highly alkaline conditions.

  • v117n5a12 An improved flotation test method and pyrite ...

    v117n5a12 An improved flotation test method and pyrite ...

    metal extraction processes. is usually reached at highly alkaline conditions An improved test method and by an organic reagent during in seawater by R.I. Jeldres*, D. Calisaya*, and L.A. Cisternas* *59,484 of -molybdenum sulphide ores in seawater entails critical

  • Flotation separation of chalcopyrite from galena by sodium ...

    Flotation separation of chalcopyrite from galena by sodium ...

    used for the separation of /lead minerals [2,3], such as with lead and lead with . Some reagents such as sodium cyanide for the of chalcopyrite and sodium dichromate for the of galena are employed [4]. Although only small amount of this kind

  • Pyrite depression by dextrin in flotation with xanthates ...

    Pyrite depression by dextrin in flotation with xanthates ...

    Dextrins are commercially used for of carbonaceous of lead in bulk separation Bulatovic, 2007 and of hematite and apatite in their reverse flotation against siliceous minerals Lin and Burdick, 1988. Dextrin dosages of …

  • PDF Depression of pyrite in the flotation of high pyrite ...

    PDF Depression of pyrite in the flotation of high pyrite ...

    For , it is clear that A. ferrooxidans was as effective Fig. 5 shows that the flotation of sphalerite and follows as sodium cyanide, and recoveries were 25.3% and 23.5% first-order kinetics in the presence and absence of A. ferrooxidans when NaCN and bacteria were used as the depressants, respec- with 140 g/t ...

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

    The depression of pyrite in selective flotation by ...

     · The mechanism underpinning the role of lignosulfonate-based biopolymers on the flotation of un and has been investigated. In the flotation of un-activated pyrite at pH 5, dixanthogen is the main species responsible for pyrite flotation, the formation of which is accompanied by the reduction of oxygen or ferric hydroxides on pyrite surface.

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