Electrochemical flotation of sulfides: Chalcocite-ethylxanthate interactions

Richardson, Patricia A.; Stout, J.V.; Proctor, C.L.; Walker, G. W.

doi:10.1016/0301-7516(84)90023-1

Cited by 50 publications

(9 citation statements)

References 11 publications

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“…The presence of hydrogen peroxide, as an intermediate in oxygen reduction, is consistent with reports by Jones _d Woodcock (1978) that hydrogen peroxide reacts with xanthates to form perxanthate (ROCS20") and that perxanthate is present in industrial concentrators. This is also consistent with observations of perxanthate in microflotation cells when sulfide minerals are potentiostated at negative potentials (Richardson et al, 1984).…”

Section: Introductionsupporting

confidence: 91%

Control of pyrite surface chemistry in physical coal cleaning. Twelfth quarterly technical progress report, June 1, 1992--August 31, 1992

Yoon¹,

Richardson²

1992

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Section: Introductionsupporting

confidence: 91%

Control of pyrite surface chemistry in physical coal cleaning. Twelfth quarterly technical progress report, June 1, 1992--August 31, 1992

Yoon¹,

Richardson²

1992

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“…Beigler, Rand and Woods (1975) xanthates to form perxanthate (ROCS20") and that perxanthate is present in industrial concentrators. This is also consistent with observations of perxanthate in microflotation cells when sulfide minerals are potentiostated at negative potentials (Richardson et al, 1984).…”

Section: Introductionsupporting

confidence: 91%

Control of pyrite surface chemistry in physical coal cleaning

Yoon¹,

Richardson²

1992

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“…This is because adsorption simultaneously involves a variety of physical and chemical contributions which cannot be easily separated . Because of this, an understanding of the role of the headgroup of a surfactant in the adsorption process has focused on chemical interactions, for instance, xanthate on sulfides − and oleate on oxides and salt-type minerals. − …”

Section: Introductionmentioning

confidence: 99%

An Electrokinetic Study of the Adsorption of Dodecyl Ammonium Amine Surfactants at the Muscovite Mica−Water Interface

et al. 1999

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The adsorption of dodecyl single chain surfactants with primary, secondary, tertiary, and quaternary ammonium headgroups at the muscovite mica basal plane-water interface has been investigated using a flat plate streaming potential apparatus and atomic force microscopy (AFM). Both a hemi-micelle concentration (HMC) and a point of zeta potential reversal (PZR) were observed as the surfactant adsorbed at the muscovite mica-water interface. The HMC and PZR were shifted to higher surfactant concentration as the headgroup was changed from the primary to the quaternary ammonium group. AFM images of surfactant patches adsorbed at the mica-water interface indicate that the surfactant patch size becomes smaller and distributes more uniformly with change from the primary to quaternary ammonium headgroups. The hydrophobic force contribution of the hydrocarbon chain to the adsorption of the C12 surfactant, estimated by subtracting other contributions from the total adsorption free energy, was calculated to decrease as the headgroup was changed from the primary to the quaternary amine.

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Electrochemical flotation of sulfides: Chalcocite-ethylxanthate interactions

Cited by 50 publications

References 11 publications

Control of pyrite surface chemistry in physical coal cleaning. Twelfth quarterly technical progress report, June 1, 1992--August 31, 1992

Control of pyrite surface chemistry in physical coal cleaning. Twelfth quarterly technical progress report, June 1, 1992--August 31, 1992

Control of pyrite surface chemistry in physical coal cleaning

An Electrokinetic Study of the Adsorption of Dodecyl Ammonium Amine Surfactants at the Muscovite Mica−Water Interface

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