Results 31 to 40 of about 87,639 (320)

The effect of quartz on the flotation of pyrite depressed by serpentine

open access: yesJournal of Materials Research and Technology, 2015
The effect of quartz particles on the flotation of pyrite depressed by serpentine has been investigated through flotation tests, adsorption tests, zeta potential measurements and DLVO calculation.
Bo Feng, Yiping Lu, Xianping Luo
doaj   +1 more source

High redox potential promotes oxidation of pyrite under neutral conditions: Implications for optimizing pyrite autotrophic denitrification.

open access: yesJournal of Hazardous Materials, 2021
Pyrite autotrophic denitrification (PAD) represents an important natural attenuation process of nitrate pollution and plays a pivotal role in linking nitrogen, sulfur, and iron cycles in a variety of anoxic environments. However, there are knowledge gaps
Tong Liu   +4 more
semanticscholar   +1 more source

Raman spectroscopy of pyrite in marble from Chillagoe, Queensland [PDF]

open access: yes, 2015
Samples of marble from Chillagoe, North Queensland have been analysed using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) and Raman spectroscopy.
Andrés López   +3 more
core   +1 more source

Chalcopyrite Dissolution at 650 mV and 750 mV in the Presence of Pyrite

open access: yesMetals, 2015
The dissolution of chalcopyrite in association with pyrite in mine waste results in the severe environmental issue of acid and metalliferous drainage (AMD).
Yubiao Li   +3 more
doaj   +1 more source

Experimental Study on the Oxidation Reaction of Coal-Pyrite and Mineral-Pyrite with the Participation of Fe(III) and Bacteria under Acidic Conditions

open access: yesEnergies, 2023
As one of the crucial factors contributing to coal spontaneous combustion, the oxidation of pyrite is a complex process involving multiple reactions, particularly in the presence of oxidants (Fe3+ and O2) and bacteria. However, experimental results based
Mengya Ma   +3 more
doaj   +1 more source

Post-depositional tectonic modifications of VMS deposits in Iberia and its economic significance [PDF]

open access: yes, 2011
The original stratigraphic relationships and structure of VMS deposits are commonly obscured by deformation. This can also affect their economic significance, as shown by several Iberian Pyrite Belt (IPB, SW Iberia) examples.
Castroviejo Bolibar, Ricardo   +2 more
core   +1 more source

The flotation of pyrite using xanthate collecters [PDF]

open access: yes, 1986
Bibliography: leaves 117-123.The flotation properties of pyrite were found to be significantly influenced by variations in the pH. In acidic solutions the pyrite floatability is very high, and recoveries of 95% could be achieved using only a frother.
Dimou, Anna
core   +1 more source

Geochemical and micro-textural fingerprints of boiling in pyrite

open access: yesGeochimica et Cosmochimica Acta, 2019
The chemical composition, textures and mineral associations of pyrite provide key information that help elucidate the evolution of hydrothermal systems.
Nelson Román   +5 more
semanticscholar   +1 more source

Selective flotation of chalcopyrite from pyrite via seawater oxidation pretreatment

open access: yesInternational Journal of Mining Science and Technology, 2023
The flotation separation of chalcopyrite from pyrite has attracted increasing attention due to the consumption of vast water resources and depressants.
Wanqing Li   +4 more
doaj   +1 more source

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