The surface properties of pyrite coupled with gold in the presence of oxygen

Huai, Yangyang; Plackowski, Chris; Peng, Yongjun

doi:10.1016/j.mineng.2017.06.013

Cited by 38 publications

(9 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the past decades, the electrochemistry of pyrite has been studied extensively. [28][29][30][31] As the most abundant copper mineral, chalcopyrite (CuFeS 2 ) is the most economically important copper resource and is always found in association with pyrite. The selective separation of chalcopyrite from pyrite is very difficult because of several electrochemical interactions that occur at the surface of minerals during grinding.…”

Section: Introductionmentioning

confidence: 99%

Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

et al. 2018

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

et al. 2018

View full text Add to dashboard Cite

show abstract

“…A higher rate of adsorption was observed with Sample A, which could be attributed to its higher electrochemical activity and Au content (Ertekin et al, 2016). It has been shown that Au-containing pyrite particles have better collector adsorption and flotation performance than that of barren pyrite (Dunne, 2005;Huai et al, 2017;Monte et al,1997;Huai et al 2019;Klimpel, 1999).…”

Section: The Relationship Between Mineral Composition and Adsorption Of Depressantsmentioning

confidence: 95%

Application of EIS technique to investigate the adsorption of different types of depressants on pyrite

Ertekin¹,

Pekmez²,

Kappes³

et al. 2021

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

“…The doublet at a lower binding energy range (161.5-162.0 eV) corresponded to the surface-most sulfur atom, S2 2− [45]. The peak around 164.0 eV was attributed to polysulfide and elemental sulfur Sn 2− /S8 [46,47]. An energy loss (EL) feature has been fitted at 164.5 eV.…”

Section: Xps Characterizationmentioning

confidence: 96%

Contributions of Microbial “Contact Leaching” to Pyrite Oxidation under Different Controlled Redox Potentials

et al. 2020

View full text Add to dashboard Cite

The function of microbial contact leaching to pyrite oxidation was investigated by analyzing the differences of residue morphologies, leaching rates, surface products, and microbial consortia under different conditions in this study. This was achieved by novel equipment that can control the redox potential of the solution and isolate pyrite from microbial contact oxidation. The morphology of residues showed that the corrosions were a little bit severer in the presence of attached microbes under 750 mV and 850 mV (vs. SHE). At 650 mV, the oxidation of pyrite was undetectable even in the presence of attached microbes. The pyrite dissolution rate was higher with attached microbes than that without attached microbes at 750 mV and 850 mV. The elemental sulfur on the surface of pyrite residues with sessile microorganisms was much less than that without attached microbes at 750 mV and 850 mV, showing that sessile acidophiles may accelerate pyrite leaching by reducing the elemental sulfur inhibition. Many more sulfur-oxidizers were found in the sessile microbial consortium which also supported the idea. The results suggest that the microbial “contact leaching” to pyrite oxidation is limited and relies on the elimination of elemental sulfur passivation by attached sulfur-oxidizing microbes rather than the contact oxidation by EPS-Fe.

show abstract

The surface properties of pyrite coupled with gold in the presence of oxygen

Cited by 38 publications

References 41 publications

Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

Application of EIS technique to investigate the adsorption of different types of depressants on pyrite

Contributions of Microbial “Contact Leaching” to Pyrite Oxidation under Different Controlled Redox Potentials

Contact Info

Product

Resources

About