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Influence of grinding media, pyrite mineralogy and water ...

2019-5-15  (2019). Influence of grinding media, pyrite mineralogy and water chemistry on the galvanic interaction between grinding media and pyrite. Canadian Metallurgical Quarterly: Vol. 58, No. 4, pp. 427-437.

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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 combinations ...

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Galvanic interaction of grinding media with pyrite and its ...

When pyrite is exposed to grinding media during grinding, a galvanic interaction occurs between them with electrons flowing from the more active material (grinding media) to the more noble ...

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Pyrite-pyrrhotite grinding media interactions and their ...

OSTI.GOV Journal Article: Pyrite-pyrrhotite grinding media interactions and their effects on media wear and flotation

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The interaction of grinding media and collector in pyrite ...

When forged steel was used as the grinding media, a high dosage of MBS was required to depress pyrite, but a low dosage of MBS could almost completely depressed pyrite when high chrome steel ...

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Influence of grinding media and water quality on flotation ...

2017-10-1  Apart from chemical species dissolved in the process water, the grinding media might also affect the grinding environment and thus the floatability of pyrite. The selection of media for grinding of pyrite ores may be dependent on whether or not Cu 2+ (activator) is added prior to the grinding stage (Peng and Grano, 2010, Chen et al., 2013).

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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 ...

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Effect of Pyrite and Pyrrhotite on the Corrosive Wear of ...

2018-2-12  However, the rest potential of pyrite was unstable and drifted toward nobler direction over time. The curve, labeled Py (porcelain), shows an example after 15 min. of equilibration. This passivation-like behavior became evident under anodic polarization. During grinding, abraded steel-debris are generated by the abrasive wear of grinding media.

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EFFECT OF REGRINDING CONDITIONS ON THE

flotation recovery of pyrite is much lower than with stainless steel grinding media, and it is more difficult to restore by adding more collector. This means, regrinding with mild steel grinding ...

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

2018-6-27  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 photoelectron spectroscopy (XPS) were considered (Owusu et al., 2011).

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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

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Electrochemical properties of pyrite, pyrrhotite, and ...

2012-10-26  pyrite and pyrrhotite from other sulphide minerals. Understanding of activation and depression of sulphide minerals, such as pyrite and pyrrhotite, as well as grinding media such as steel balls, under both acidic and alkaline conditions, is necessary to improve recovery and to design process strategies for cost reduction. These parameters can ...

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A potential ceramic ball grinding medium for optimizing ...

2021-7-13  Ceramic ball (CB) and cast iron ball (CIB) media were used in the grinding of chalcopyrite and pyrite (1:1) to investigate the influence of grinding media on flotation separation. The selectivity indexe values were 2.65 (CB) and 1.58 (CIB) under the optimal ...

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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 combinations ...

Read More
Galvanic interaction of grinding media with pyrite and its ...

When pyrite is exposed to grinding media during grinding, a galvanic interaction occurs between them with electrons flowing from the more active material (grinding media) to the more noble ...

Read More
Pyrite-pyrrhotite grinding media interactions and their ...

OSTI.GOV Journal Article: Pyrite-pyrrhotite grinding media interactions and their effects on media wear and flotation

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The interaction of grinding media and collector in pyrite ...

2021-5-7  A significant proportion of invisible gold is hosted by pyrite and the successful recovery of this gold requires a high recovery of pyrite in flotation. In the industry, the flotation of gold-bearing pyrite is operated in a broad range of pH and collector concentration with different types of grinding media. Following the previous study at pH 5.0 and 7.0, the current study investigated the ...

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The effect of grinding media on pyrite flotation

2021-3-27  The University of Queensland's institutional repository, UQ eSpace, aims to create global visibility and accessibility of UQ’s scholarly research.

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Effect of Pyrite and Pyrrhotite on the Corrosive Wear of ...

2018-2-12  However, the rest potential of pyrite was unstable and drifted toward nobler direction over time. The curve, labeled Py (porcelain), shows an example after 15 min. of equilibration. This passivation-like behavior became evident under anodic polarization. During grinding, abraded steel-debris are generated by the abrasive wear of grinding media.

Read More
The interaction of grinding media and collector in pyrite ...

The interaction of grinding media and collector in pyrite flotation at alkaline pH. Highlights•Pyrite recovery with forged steel was higher than that with chrome steel at pH 8.5.•An increase in PAX dosage did not improve pyrite recovery with chrome steel.•At pH 8.5, pyrite oxidation preceded prior to xanthate oxidation.•Low Eh generated ...

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Electrochemical properties of pyrite, pyrrhotite, and ...

2012-10-26  pyrite and pyrrhotite from other sulphide minerals. Understanding of activation and depression of sulphide minerals, such as pyrite and pyrrhotite, as well as grinding media such as steel balls, under both acidic and alkaline conditions, is necessary to improve recovery and to design process strategies for cost reduction. These parameters can ...

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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 particles, thereby ...

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University of Cape Town Centre for Minerals Research

2020-12-8  media (ceramic) under dry grinding. This might be due to cleaner pyrite surfaces created during dry grinding, since the prevention of media corrosion may lead to improved recoveries. During wet grinding, iron hydroxide is generated and reduces the flotation response of pyrite. Dry grinding

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Review of the effect of grinding media on flotation of ...

No clear trend has been revealed by testwork into the effects of grinding media on pyrite flotation. Many workers have found that pyrite tends to float faster in the presence of collectors following mild steel grinding (Table 4). Learmont and Iwasaki [41], Martin [28], Bruce [3]

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Galvanic interaction of grinding media with arsenopyrite ...

Galvanic interaction of grinding media with arsenopyrite and pyrite and its effect on gold cyanide leaching A. Rabieh, J.J. Eksteen⁎, B. Albijanic Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, GPO Box U1987, Perth, WA 6845, Australia ARTICLE INFO Keywords: Grinding media

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(PDF) Electrochemical properties of pyrite, pyrrhotite ...

PENG, Y. and GRANO, S. Effect of grinding media on the activation of pyrite hydrophobic, and in the case of steel, the oxidation causes it flotation. Minerals Engineering, vol. 23, 2010. pp. 600–605. to

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The interaction of grinding media and collector in pyrite ...

2021-5-7  A significant proportion of invisible gold is hosted by pyrite and the successful recovery of this gold requires a high recovery of pyrite in flotation. In the industry, the flotation of gold-bearing pyrite is operated in a broad range of pH and collector concentration with different types of grinding media. Following the previous study at pH 5.0 and 7.0, the current study investigated the ...

Read More
The effect of grinding media on pyrite flotation

2021-3-27  The University of Queensland's institutional repository, UQ eSpace, aims to create global visibility and accessibility of UQ’s scholarly research.

Read More
The interaction of grinding media and collector in pyrite ...

The interaction of grinding media and collector in pyrite flotation at alkaline pH. Highlights•Pyrite recovery with forged steel was higher than that with chrome steel at pH 8.5.•An increase in PAX dosage did not improve pyrite recovery with chrome steel.•At pH 8.5, pyrite oxidation preceded prior to xanthate oxidation.•Low Eh generated ...

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The interaction between grinding media and collector in ...

2021-7-7  Gold often coexists with pyrite as micron and submicron-inclusions and pyrite is therefore floated to maximize gold recovery in gold processing plants. In practice, different types of grinding media and a great range of pH and collector concentrations are used for pyrite flotation without scientific guidance. In this study, the effect of three different types of grinding media including forged ...

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Galvanic interaction of grinding media with arsenopyrite ...

Galvanic interaction of grinding media with arsenopyrite and pyrite and its effect on gold cyanide leaching A. Rabieh, J.J. Eksteen⁎, B. Albijanic Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, GPO Box U1987, Perth, WA 6845, Australia ARTICLE INFO Keywords: Grinding media

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

Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): hdl.handle/2440/686... (external link)

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Review of the effect of grinding media on flotation of ...

No clear trend has been revealed by testwork into the effects of grinding media on pyrite flotation. Many workers have found that pyrite tends to float faster in the presence of collectors following mild steel grinding (Table 4). Learmont and Iwasaki [41], Martin [28], Bruce [3]

Read More
Electrochemical properties of pyrite, pyrrhotite, and ...

2012-10-26  pyrite and pyrrhotite from other sulphide minerals. Understanding of activation and depression of sulphide minerals, such as pyrite and pyrrhotite, as well as grinding media such as steel balls, under both acidic and alkaline conditions, is necessary to improve recovery and to design process strategies for cost reduction. These parameters can ...

Read More
Pyrite surface characterization and control for advanced ...

1991-1-1  The surface chemical studies and the studies of floatability of coal-pyrite and the effect of various parameters such as grinding media and environment, aging under different atmospheres, etc. on thereof, are directed at identifying the causes and possible solutions of the pyrite rejection problems in coal cleaning.}, doi = {10.2172/6086225 ...

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吴彩斌-新经济管理学院

2021-7-19  Effect of grinding media on grinding-flotation behavior of chalcopyrite and pyrite. Frontiers in Materials. 2020,7(6):176 6.Bensheng Li, Caibin Wu, Die Hu, Jindong Xu, Tao Zhang, Jiaqi Tong, Xin Fang. Copper extraction from the ammonia leach liquor of spent

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Autogeneous Grinding VS Steel Grinding Media in Flotation

2018-6-8  The specific mineral system studied in some detail was a chalcopyrite/pyrite ore of 1.37% Cu and 9.82% pyrite. In all of the data to be reported in this paper, the one-point target grind was 15.0% +65 mesh U. S. (210 microns). The steel grinding media

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A review of the effects of grinding media and chemical ...

The nature of pyrite itself (finely disseminated reactive pyrite vs. low reactivity) also plays a role in its surface reactivity. This paper reviews the experimental studies examining the interactions between grinding media, gold bearing pyrites and process water occurring during grinding of refractory gold ores and the effect of these ...

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Galvanic Interaction between Chalcopyrite and Pyrite with ...

(ii) Grinding media was anodic relative to pyrite and chalcopyrite, and therefore the electrons flowed from the media to the minerals. Pyrite or chalcopyrite with a higher rest potential acted as the cathode, whilst the grinding media with a lower rest potential acted as the anode, when they were electrochemically contacted in single mineral ...

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