Some electrical properties of bubbles and their role in the flotation of quartz

Dibbs, H P; Sirois, L. L.; Bredin, R.

doi:10.1179/cmq.1974.13.2.395

Cited by 24 publications

(3 citation statements)

References 13 publications

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“…The bubbles themselves are always charged [see Dibbs et al (1974), Huddleston and Smith (1976), and Collins et al (1978)], whether in pure water, in solutions of inorganic electrolytes, or in solutions of surfactants. Owing to a preferential adsorption of OH-, there is a definite pH dependence of their charge, whether in water or in nonionic surfactant solutions.…”

Section: Flotation Frothers: Their Requirements and Mechanisms Of Thementioning

confidence: 99%

Surface Chemistry of Froth Flotation

Leja¹

1981

263

147

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Section: Flotation Frothers: Their Requirements and Mechanisms Of Thementioning

confidence: 99%

Surface Chemistry of Froth Flotation

Leja¹

1981

263

147

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“…Based on the simple physical considerations, Flint and Howarth (1971) showed that the major kinetic factor, which defines the efficiency of flotation of the fine and consequently light and low inertia particles, by a rising bubble, relates to the ratio in their dimensions. Later these findings were experimentally proven in the studies made by many researchers (Anfruns and Kitchener, 1977;Bleier et al, 1977;Collins and Jameson, 1977;Dibbs et al, 1974;Ratcliff, 1973, 1975). Thus professionals in the flotation technology started to explore possibilities of applying smaller bubbles.…”

Section: Introductionmentioning

confidence: 83%

Turbulent microflotation of ultrafine minerals

Rulyov¹

2008

Mineral Processing and Extractive Metallurgy

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The present paper discusses the theoretical principles and also presents substantiating experimental data on the effectiveness of the turbulent microflotation for ultrafine mineral treatment. It is shown that it is quite feasible to achieve .80% recovery in 30-70 s when treating multiphase mixture in the turbulent flow if bubbles ,50 mm in diameter are used, and also the stages of introduction of microbubbles into the suspension and the recovery of the froth concentrate are separated in space and time from the pulp in the tubular static mixer.

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“…The zeta potential is sensitive to some extent to changes in ionic strength of the suspending medium. The presence of cations can also affect the zeta potential of bubbles, although these measurements are more difficult to achieve (Dibbs et al, 1974;Okada and Akagi, 1987). The presence of cations can also affect the zeta potential of bubbles, although these measurements are more difficult to achieve (Dibbs et al, 1974;Okada and Akagi, 1987).…”

Section: Theorymentioning

confidence: 99%

Cell and surfactant separation by column flotation

1994

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The separation of rehydrated Saccharomyces cerevisiae and an alkyl polyglycoside surfactant by column flotation was studied as a function of wash water flow and cation concentration. Separation of cells and surfactant was measured under steady-state conditions. Surfactant recovery in the foam concentrate was in the range of 86-95%. Yeast cells were enriched in the foam concentration by a factor of up to 1 I , but the recovery only reached 55 %. The use of wash water was very effective for removing the cells from the foam, giving a good separation between the cells and the surfactant. Addition of chloride salts of Na, K, Ca, and Mg at concentrations in the range of 0.05-0.1 moUL increased both the enrichment and the recovery of yeast in the foam. The most effective salt levels for cell flotation, less than 0.1 moliL, were in the same range of concentration as the minimum electrophoretic mobility of the cells. Les separation de Sasccharomyces cerevisiae rkhydratk et d'un surfactant de polyglycoside alkyl par flottation en colonne a ttC 6tudiCe en fonction de 1'6coulement de I'eau de lavage et de la concentration cationique. La skparation des cellules et du surfactant a kt6 mesur6e en rkgime permanent. La rkcupkration du surfactant dans le concentre mousseux se situe entre 86 et 95 % . Les cellules de levure ont Ctt enrichies dans la concentration de mousse par un facteur allant jusqu'a 11, mais seule la rkcupiration atteint 5 5 % . L'utilisation de I'eau de lavage est trks efficace pour retirer les cellules de la mousse et donne une bonne separation entre les cellules et le surfactant. L'ajout de sels de chlorure de Na, k, Ca et Mg a des concentrations entre 0,05 et 0,1 mol/L augmente h la fois I'enrichissement et la rtcuptration de la levure dans la mousse. Les teneurs en sel les plus efficaces pour la flottation des cellules, infkrieures a 0,l mol/L, sont dans la m&me gamme de concentration que la mobilitk Clectrophorktique minimale des cellules.

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Some electrical properties of bubbles and their role in the flotation of quartz

Cited by 24 publications

References 13 publications

Surface Chemistry of Froth Flotation

Surface Chemistry of Froth Flotation

Turbulent microflotation of ultrafine minerals

Cell and surfactant separation by column flotation

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