Prospects of application of water preparation of electrochemical technology in copper-zinc ores flotation

Chanturiya, E. L.; Chanturia, V. A.; Zhuravleva, E. S.

doi:10.17580/tsm.2016.01.02

Cited by 2 publications

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“…Nowadays, it is commonly accepted that lead dixanthate is the hydrophobic entity on the galena surface, ensuring xanthate-facilitated flotation. As a semiconductor, galena allows electron transfer in the solid phase [138,140,169]. Thus, formation of lead dixanthate is possible via reaction (29) [19,70,114,117,173,174] or via oxidation of the mineral, followed by ion exchange with the collector [19] (Equation ( 43 Other reactions, namely the ones described by Equations ( 28) and (30), are also possible [70].…”

Section: Ph-eh Diagrams In Galena Flotation Separationmentioning

confidence: 99%

“…Changing Eh and pH, similarly to the reagents' addition, achieved by using an external voltage source with electrodes inserted in the pulp [4,99,119,169,170] with the anticipation that mineral particles in the pulp will attain the potential of the control electrode and the measuring electrodes will receive the potential of the particles [28], or by using water that was previously subjected to electrolysis as the pulp preparation water [171].…”

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Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Panayotova

2023

Minerals

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Studies on the dependence of the technological results of non-ferrous sulfide ore (copper—arsenic-bearing and non-arsenic-bearing—lead–zinc, and polymetallic) flotation on the pulp potential Eh are reviewed. Findings on the relation of Eh and collectorless flotation are presented. Changes in the pulp potential due to different gas applications and various reagent additions are considered. The influence of the grinding medium on the pulp Eh and hence on the flotation results is presented through various examples. The relation between the oxidation–reduction potential and reagent effects is exhibited and explained. pH–Eh ranges of different minerals’ flotation, as recorded in various studies, are summarized and visualized jointly for all mentioned ores. It is concluded that the pulp Eh value, considered together with the pH value, is a useful means for flotation selection controlling and deserves further research, especially under industrial conditions. Some problems and difficulties in using pulp Eh for flotation control are discussed.

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Section: Ph-eh Diagrams In Galena Flotation Separationmentioning

confidence: 99%

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confidence: 99%

Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Panayotova

2023

Minerals

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“…Finally, non-polar solvent molecules accumulate in the torus, insulate and seal the membrane edge area decreasing the electrical leakage. 14 All the above membrane effects of the solvent significantly modulate electrical signals induced by ion carriers. 11,15 The goal of the present study was to re-evaluate ionophoretic properties of ferutinin in solvent-containing bilayer lipid membranes.…”

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confidence: 99%

Ferutinin as a Ca²⁺complexone: lipid bilayers, conductometry, FT-IR, NMR studies and DFT-B3LYP calculations

et al. 2015

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Calcium ionophoretic properties of ferutinin were re-evaluated in solvent-containing bilayer lipid membranes. The slopes of conductance-concentration curves suggest that in the presence of a solvent in the membrane the majority of complexes appear to consist of a single terpenoid molecule bound to one Ca ion. By contrast, the stoichiometry of ferutinin-Ca(2+) complexes in acetone determined using the conductometric method was 2 : 1. While the cation-cation selectivity of ferutinin did not change, the cation-anion selectivity slightly decreased in solvent containing membranes. FT-IR and NMR data together with DFT calculations at the B3LYP/6-31G(d) level of theory indicate that in the absence of Ca ions ferutinin molecules are hydrogen-bonded at the phenol hydroxyl groups. The variations of absorption assigned to -OH and -C-O stretching mode suggest that ferutinin interacts strongly with Ca ions via the hydroxyl group of ferutinol and carboxyl oxygen of the complex ether bond. The coordination through the carbonyl group of ferutinin was demonstrated by theoretical calculations. Taken together, ferutinin molecules form H-bonded dimers, while complexation of Ca(2+) by ferutinin ruptures this hydrogen bond due to spatial re-orientation of the ferutinin molecules from parallel to antiparallel alignment.

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Prospects of application of water preparation of electrochemical technology in copper-zinc ores flotation

Cited by 2 publications

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Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Ferutinin as a Ca²⁺complexone: lipid bilayers, conductometry, FT-IR, NMR studies and DFT-B3LYP calculations

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Prospects of application of water preparation of electrochemical technology in copper-zinc ores flotation

Cited by 2 publications

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Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Control of Non-Ferrous Metal-Sulfide Minerals’ Flotation via Pulp Potential

Ferutinin as a Ca2+complexone: lipid bilayers, conductometry, FT-IR, NMR studies and DFT-B3LYP calculations

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Ferutinin as a Ca²⁺complexone: lipid bilayers, conductometry, FT-IR, NMR studies and DFT-B3LYP calculations