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selective flotation of pyrite from

Flotation of Pyrite

Table of ContentsDescription of SamplesPreparation of SamplesFactors Affecting Flotation of PyriteKind and Physical Condition of MineralSize of Mineral GrainsMethod ...

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Minerals | Free Full-Text | Selective Flotation of Pyrite ...

The micro-flotation experiments results indicated that plasma pre-treatment can achieve selective flotation of arsenopyrite from pyrite. The XPS analysis results indicated that the oxidation degree of plasma-modification arsenopyrite surface is much higher than that of pyrite.

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Technical Note The selective flotation of arsenopyrite from pyrite

Keywords: Flotation depressants; Flotation reagents 1. Introduction Separation of pyrite and arsenopyrite by flotation using xanthates presents difficulties due to the fact that xanthates adsorb onto both these minerals as dixanth-ogen, which is not cation selective. Therefore, a num-ber of separation techniques have been employed by a

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WO2013169141A1 - Method and apparatus for separation of ...

A method and an apparatus for the separation of the mineral components of a pyrite containing copper- molybdenum ore by flotation. The method comprises grinding the ore in the presence of soda ash in an open circuit to produce an aqueous ore slurry; subjecting the slurry to a collective flash flotation step (10) in the presence of soda ash and sodium sulphide to recover a first part of metal ...

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selective depression of pyrite with polyacrylamide

Selective depression of pyrite with polyacrylamide. The effects of carboxyl, sulfonate, hydroxyl or thiourea functional groups attached to the polymers on the flotation recoveries of sphalerite and pyrite were studied as a function of polymer concentration and order of reagent addition.

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Technical Note The selective flotation of arsenopyrite from pyrite

Keywords: Flotation depressants; Flotation reagents 1. Introduction Separation of pyrite and arsenopyrite by flotation using xanthates presents difficulties due to the fact that xanthates adsorb onto both these minerals as dixanth-ogen, which is not cation selective. Therefore, a num-ber of separation techniques have been employed by a

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

The depression of pyrite flotation by polysaccharides is due to the selective adsorption of polysaccharides polymers on pyrite surface. Bulut et al. (2011) investigated the depression effect of starch on pyrite flotation and found that starch was effective at a low dosage (1.7 mg L 1) and more pronounced at alkaline pH (10) than natural pH (6.5). This confirms the adsorption of starch on mineral surfaces through the interaction with metal-hydroxylated species.

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Selective separation of galena and sphalerite from pyrite ...

In this research, the selective flotation of galena and sphalerite was evaluated in a pyrite-rich sample of the Kooshk mine. Organic and inorganic pyrite depressants and also specific collectors were used in the appropriate combination using the mixture design method. After

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A study on selective flotation in low and high pyritic copper ...

A study on selective flotation in low and high pyritic copper sulphide ores Ahmad Hassanzadeha and Mohammad Hasanzadehb ... impact of pyrite on copper flotation. [2730] It has been

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Selective flotation of gold from pyrite under oxidizing ...

Bench-scale flotation tests confirmed the feasibility of selective separation of gold from pyrite by using hydrogen peroxide as an oxidizing agent and amyl xanthate as collector. At values of pH 8 depression of pyrite increased significantly, while the high recovery of gold remained practically unchanged.

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(PDF) Dextrin as a Regulator for the Selective Flotation of ...

The main reason for this is that pyrite from different mineral deposits shows different flotation performance due to the inhomogeneous surface structure and lattice defects of pyrite (Wang et al ...

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Selective Flotation of Pyrite from Galena Using Chitosan with ...

Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, i.e., 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g/t terpineol, while chitosan with other molecular weights cannot. Furthermore, the results of the zeta potential and

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Flotation Behavior of Arsenopyrite and Pyrite, and Their ...

Different from the flotation behavior of single minerals, the results showed that the recovery of arsenopyrite was lower than that of pyrite, and the selectivity index of arsenopyrite and pyrite was the highest when the PEX concentration was the lowest.

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(PDF) Selective flotation of chalcopyrite from pyrite using ...

Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, i.e., 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g ...

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Selective separation of galena and sphalerite from pyrite ...

In this research, the selective flotation of galena and sphalerite was evaluated in a pyrite-rich sample of the Kooshk mine. Organic and inorganic pyrite depressants and also specific collectors were used in the appropriate combination using the mixture design method. After

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(PDF) Selective flotation of chalcopyrite from pyrite using ...

Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, i.e., 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g ...

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Flotation Behavior of Arsenopyrite and Pyrite, and Their ...

Different from the flotation behavior of single minerals, the results showed that the recovery of arsenopyrite was lower than that of pyrite, and the selectivity index of arsenopyrite and pyrite was the highest when the PEX concentration was the lowest.

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Selective adsorption mechanism of salicylic acid on pyrite ...

In the flotation process of copper sulfide, traditional inorganic depressants used for pyrite often cause environmental problems and difficulty in treatment of the tailings and waste water. Therefore, it is necessary to explore non-polluting and efficient flotation reagents to make mineral processing environmentally friendly and sustainable.

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(PDF) A study on selective flotation in low and high pyritic ...

It was also concluded that for [15] Hassanzadeh, A.; and Azizi, A. (2015) Flotation circuit the evaluation of selective separation of copper-pyrite efficiency enhancement regarding increase of rougher ores, attending to the grade-recovery or S.E. results is cells throughput. 24th International Mining Congress not sufficient and the estimated SI ...

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Selective separation of pyrite and chalcopyrite by ...

Selective separation of pyrite from other associated ferrous sulphides at acidic and neutral pH has been a challenging problem. This paper discusses the utility of Acidithiobacillus ferrooxidans for the selective flotation of chalcopyrite from pyrite. Consequent to interaction with bacterial cells,

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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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EFFECTS OF EDTA ON SELECTIVE FLOTATION OF SULPHIDE MINERALS

EFFECTS OF EDTA ON SELECTIVE FLOTATION OF SULPHIDE MINERALS Received Aprl 21, 2004; reviewed; accepted June 21, 2004 Unwanted activation of sphalerite and pyrite by copper ions dissolved from copper minerals (mainly chalcopyrite) hampers flotation selectivity. Galvanic

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