Effect of Physisorption of Collecting Agent on Flotation of Pyrite in the Presence of Fe2+ and Fe3+ Ions

Flotation of pyrite is examined as function of pH and ferrous ion concentration. To explain depression of pyrite flotation in the neutral pH range and at high concentration of ferrous ions, the mechanism of physisorption of a collecting agent is used. It is experimentally determined that interaction...

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Bibliographic Details
Published inJournal of mining science Vol. 58; no. 1; pp. 105 - 114
Main Authors Kondrat’ev, S. A., Konovalov, I. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2022
Springer Nature B.V
Subjects
Earth and Environmental Science
Earth Sciences
Ferrous ions
Flotation
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Interlayers
Ion concentration
Ions
Iron
Mineral Dressing
Mineral Resources
pH effects
Pyrite
flotation suppression
medium pH
physisorbed collector
pyrite flotation
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Summary:Flotation of pyrite is examined as function of pH and ferrous ion concentration. To explain depression of pyrite flotation in the neutral pH range and at high concentration of ferrous ions, the mechanism of physisorption of a collecting agent is used. It is experimentally determined that interaction products of xanthate and ferrous ions possess different velocities of spreading over the gas–water interface depending on their concentrations and on the solution pH. Furthermore, they have different influence on the velocity of liquid removal from the interlayer between mineral particle and gas bubble. The mechanism of physisorption of a collecting agent discloses the causes of suppressed flotation of pyrite in the neutral pH zone and increased pyrite flotation in the alkaline medium.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739122010136