Corrosive Electrochemistry of Oxidation-Reduction of Sulphide Minerals

Hu, Yuehua; Sun, Wei; Wang, Dianzuo

doi:10.1007/978-3-540-92179-0_7

Cited by 3 publications

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“…Understanding this phenomenon helps in optimizing the operation, which includes the oxidation rate, surface processes, and generated products. The factors that most influence the transfer of electrons from the more anodic to the more cathodic material are the pulp potential [ 5 ], temperature [ 6 , 7 ], pH [ 8 ], and the interactions between the minerals themselves during grinding (galvanic interaction) or conditioning.…”

Section: Chalcopyrite Mineral Oxidationmentioning

confidence: 99%

“…Based on the Pourbaix diagram ( Figure 3 ), it is possible to make a prediction of the mineral’s floatability. This figure also shows that in a broad range of pH and potential, chalcopyrite exhibits the best self-induced floatability, and it has wide lower and upper limits of potential that induce its natural ability to float naturally [ 8 ].…”

Section: Chalcopyrite Mineral Oxidationmentioning

confidence: 99%

“… Eh-pH diagram for chalcopyrite with elemental sulfur as metastable phase (adapted from Hu et al [ 8 ]). …”

Section: Figurementioning

confidence: 99%

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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

et al. 2022

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In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but challenging for the operation due to its ability to capture a portion of collector and float, decreasing the quality of the concentrate, is addressed. This manuscript discusses the main chemical and physical mechanisms involved in the phenomena of reagent adsorption on the mineral surface, the impact of pH and type of alkalizing agent, and the effect of pyrite depressants, some already used in the industry and others under investigation. Modern collector reagents are also described, for which, although not yet implemented on an industrial scale, promising results have been obtained in the laboratory, including better copper recovery and selectivity, and even some green reagents present biodegradable properties that generate a better environmental perspective for mineral processing.

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Section: Chalcopyrite Mineral Oxidationmentioning

confidence: 99%

Section: Chalcopyrite Mineral Oxidationmentioning

confidence: 99%

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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

et al. 2022

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Photocorrosion of copper sulfides: Toward a solar mining industry

2018

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The Mechanism of the Effect of Pre-Magnetized Butyl Xanthate on Chalcopyrite Flotation

et al. 2022

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In this work, we applied the technology of magnetic treatment to the flotation of chalcopyrite. The mechanism of the effect of pre-magnetized butyl xanthate on chalcopyrite flotation was studied using monomineral flotation tests, adsorption tests, conductivity tests, Fourier transform infrared spectroscopy (FTIR), etc. The monomineral flotation test results showed that, after the magnetization pretreatment of butyl xanthate solution, the chalcopyrite flotation recovery was increased by nearly two percentage points, and the dosage was reduced by 4–10 mg/L at the same recovery. The adsorption, FTIR, dissolved oxygen, and conductivity test results all showed that the magnetization pretreatment increased the dissolved oxygen content and promoted the oxidation of butyl xanthate to double xanthate with better selectivity to chalcopyrite. An electrochemical analysis showed that the magnetization pretreatment of butyl xanthate reduced the corrosion potential and corrosion current density of chalcopyrite surface and inhibited the self-corrosion process of chalcopyrite surface. The flotation test results of actual copper sulfide ore showed that pre-magnetized butyl xanthate could increase the copper recovery of copper concentrate by 3.06 percentage points and the sulfur recovery of sulfur concentrate by nearly 3 percentage points, and effectively reduce the mutual content of copper and sulfur concentrates.

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Corrosive Electrochemistry of Oxidation-Reduction of Sulphide Minerals

Cited by 3 publications

References 0 publications

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

Photocorrosion of copper sulfides: Toward a solar mining industry

The Mechanism of the Effect of Pre-Magnetized Butyl Xanthate on Chalcopyrite Flotation

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