effect grinding pyrite

Effect of grinding media on the activation of pyrite ...

2010-7-1 · The effect of grinding media on pyrite flotation in the presence of collector was tested in the absence of Pb 2+ or Cu 2+. With either mild steel or 30% chromium medium, pyrite displayed very poor flotation. Around 8% recovery was obtained in 8 min of flotation in the presence of collector DBPhos or DTP.

Effect of grinding on the rate of oxidation of pyrite by ...

1994-11-1 · Solubility of pyrite (FeS 2) ground for different periods was investigated in acid solutions in air.In the initial dissolution, up to 50 h, the dissolution rate, r, was high, due to oxidized species such as FeSO 4 formed by grinding. After 50 h, the surface of pyrite was exposed and the dissolution rate decreased.

EFFECT OF REGRINDING CONDITIONS ON THE REJECTION

In this study, the effect of different regrinding conditions on the depression of fine pyrite at the cleaner stage was investigated. The regrinding condition was

Effect of grinding on the rate of oxidation of pyrite by ...

1994-11-1 · Solubility of pyrite (FeS 2 ) ground for different periods was investigated in acid solutions in air. In the initial dissolution, up to 50 h, the dissolution rate, r, was high, due to oxidized species such as FeSO 4 formed by grinding. After 50 h, the surface of pyrite was exposed and the dissolution rate decreased. The formation and dissolution of oxidized species

Effect of Wet Versus Dry Grinding on Rejection of Pyrite ...

2007-2-8 · The effect of grinding mode on the efficiency of separation of pyrite and non-pyritic minerals from Pittshurgh No. S scam coal hy froth flotation was investigated. In the case of minus 600 micron feed, grinding mode had no effect on the efficiency of separation of cither pyrite or non-pyritic minerals.

Effect of Grinding Media on Grinding-Flotation Behavior of ...

2020-5-13 · Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper investigates the influence of steel ball and nano-ceramic ball ...

A study on the effect of active pyrite on flotation of ...

2018-6-27 · separation chalcopyrite from pyrite by depressing pyrite. 5 The effect of the grinding media conditions were investigated (Peng and Grano, 2010). The grinding media 2010 The grinding media led to a decrease in the amount of floating pyrite. 6 The effects of the amount of pyrite on the chalcopyrite recovery with X-ray

effect grinding pyrite - menuiserie-badoux.fr

Effect of grinding on the rate of oxidation of pyrite by. Electrochemical properties of pyrite, pyrrhotite, and steel: effects on grinding and flotation process Authors: H Moslemi 1, P Shamsi 2, M Alimohammady 3Pyrite and pyrrhotite and mild , Electrochemical Interactions Between Mineral and Grinding Media and , The adverse effect of mineral-grinding media interactions .Effect of

An investigation into the effects of pulp chemistry under ...

Dry grinding generally produces much faster pyrite flotation kinetics than wet grinding because of the generation of particles with high surface energy and that leads to highly activated particles. It was therefore concluded that the grinding environment indeed has an effect on the flotation response of pyrite in the presence of gangue.

Effect of grinding parameters on the rheology of pyrite ...

2007-6-1 · Effect of grinding time on the rheological behavior of slurry at the shear rate of 996.1 s −1 (a) and the median size of pyrite (b). 3.4. Effect of carbon numbers of dispersantTo study the effect of carbon numbers on the grinding of pyrite, the different carbon numbers of organic acids were prepared in the experiment. ...

Effect of grinding on the rate of oxidation of pyrite by ...

Solubility of pyrite (FeS 2) ground for different periods was investigated in acid solutions in air.In the initial dissolution, up to 50 h, the dissolution rate, r, was high, due to oxidized species such as FeSO 4 formed by grinding. After 50 h, the surface of

Effect of grinding media on the activation of pyrite ...

Abstract In previous study, it has been found that the grinding conditions have a great effect on the flotation of chalcopyrite and galena as well as their separation from pyrite ( Peng et al., 2003a , Peng et al., 2003b ). In this study, the effect of the grinding conditions on the activation of pyrite by Cu2+ and Pb2+ were investigated. Based on flotation behaviour, EDTA (ethylene diamine ...

EFFECT OF REGRINDING CONDITIONS ON THE

xanthate on non-activated pyrite. The effect of different grinding media and the electrochemical potential have also been studied by Peng and Grano (2010b) and Peng .

Effect of grinding on the rate of oxidation of pyrite by ...

Solubility of pyrite (FeS 2 ) ground for different periods was investigated in acid solutions in air. In the initial dissolution, up to 50 h, the dissolution rate, r, was high, due to oxidized species such as FeSO 4 formed by grinding. After 50 h, the surface of pyrite was exposed and the dissolution rate decreased. The formation and dissolution of oxidized species were confirmed by X-ray ...

EFFECT OF REGRINDING CONDITIONS ON THE REJECTION

In this study, the effect of different regrinding conditions on the depression of fine pyrite at the cleaner stage was investigated. The regrinding condition was manipulated by different grinding ...

Pyrite-pyrrhotite-grinding media contact and its effect on ...

1990-2-1 · The electrochemical nature of mineral-grinding media interaction in the wet grinding of one and two sulfide mineral ores was investigated with regard to the flotation behaviors of the minerals. Two iron sulfides (pyrite and pyrrhotite) and mild steel were used to represent the sulfide minerals and the grinding media, respectively. Galvanic currents in two- and three-electrode

(PDF) Effect of Grinding Media on Grinding-Flotation ...

PDF | Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface... | Find, read and cite all the research ...

磨矿和浮选过程中黄铁矿电化学行为的研究进展

2020-6-29 · Huang G, Grano S. Galvanic interaction of grinding media with pyrite and its effect on floatation. Miner Eng, 2005, 18(12): 1152 doi: 10.1016/j.mineng.2005.06.005 [46] Corin K C, Song Z G, Wiese J G, et al. Effect of using different grinding media on the flotation

Effect of pyrite and pyrrhotite on the corrosive wear of ...

A previous investigation showed that corrosion currents estimated from polarization curves for the pyrrhotite - grinding media system under abrasion correlated well with corrosion currents estimated from marked ball wear test data by applying Faraday’s law. Freshly abraded metal debris were magnetically attracted to pyrrhotite and lowered the rest potentials of the mineral

Effect of grinding on the rate of oxidation of pyrite by ...

Abstract Solubility of pyrite (FeS2) ground for different periods was investigated in acid solutions in air. In the initial dissolution, up to 50 h, the dissolution rate, r, was high, due to oxidized species such as FeSO4 formed by grinding. After 50 h, the surface of pyrite was exposed and the dissolution rate decreased. The formation and dissolution of oxidized species were confirmed

Effect of grinding media on the activation of pyrite ...

Abstract In previous study, it has been found that the grinding conditions have a great effect on the flotation of chalcopyrite and galena as well as their separation from pyrite ( Peng et al., 2003a , Peng et al., 2003b ). In this study, the effect of the grinding conditions on the activation of pyrite by Cu2+ and Pb2+ were investigated. Based on flotation behaviour, EDTA (ethylene diamine ...

EFFECT OF REGRINDING CONDITIONS ON THE REJECTION

In this study, the effect of different regrinding conditions on the depression of fine pyrite at the cleaner stage was investigated. The regrinding condition was manipulated by different grinding ...

Effect of grinding media on grinding-flotation behavior of ...

Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper investigates the influence of steel ball and nano-ceramic ball grinding on the floatability of chalcopyrite and pyrite. Flotation results, as well scanning electron microscopy (SEM), X-ray ...

An Investigation into the Effects of Grinding Media on ...

ABSTRACT During the grinding of pyrite, the grinding medium affects the properties of the grinding products, which in turn affects its flotation performance. In this study, we investigated the effects of cast iron ball (CIB) and ceramic ball (CB) grinding media on the grinding products characteristics and flotation performance of pyrite using atomic absorption spectrometry,

Pyrite-pyrrhotite-grinding media contact and its effect on ...

1990-2-1 · The electrochemical nature of mineral-grinding media interaction in the wet grinding of one and two sulfide mineral ores was investigated with regard to the flotation behaviors of the minerals. Two iron sulfides (pyrite and pyrrhotite) and mild steel were used to represent the sulfide minerals and the grinding media, respectively. Galvanic currents in two- and three-electrode

An Investigation into the Effects of Grinding Media on ...

A specially designed mill which allowed the control of pH throughout grinding was used to study the effect of grinding conditions on chalcopyrite flotation and chalcopyrite separation from pyrite.

[PDF] Effect of Wet Versus Dry Grinding on Rejection of ...

The effect of grinding mode on the efficiency of separation of pyrite and non-pyritic minerals from Pittshurgh No. S scam coal hy froth flotation was investigated. In the case of minus 600 micron feed, grinding mode had no effect on the efficiency of separation of cither pyrite or non-pyritic minerals. With minus 75 micron feed, however, the selectivity achieved with the wet ground

[PDF] A study on the effect of active pyrite on flotation ...

Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. Misreported pyrite into copper concentrates decreased the grade and recovery of copper. In this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the active pyrite recovery by flotation.

Hydration characteristics investigation of iron tailings ...

2021-10-19 · Effect of grinding atmosphere on the leaching of mechanically activated pyrite and sphalerite Hydrometallurgy , 72 ( 2004 ) , pp. 79 - 86 Article Download PDF View Record in Scopus Google Scholar

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