The relationship between flotation and adhesion of galena particles to the air-solution interface

Nishkov, I.; Pugh, R.J.

doi:10.1016/0301-7516(89)90022-7

Cited by 13 publications

(3 citation statements)

References 4 publications

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“…It was also found that the magnitude of the adhesive attachment force reached a limiting value (equivalent to about 50% of the adhesive strength of the individual particles) when 10 particles were present in the aggregate. The theory was later verified by detaching aggregated galena particle from the air/water interface using a centrifuge technique …”

Section: Discussionmentioning

confidence: 93%

“…The theory was later verified by detaching aggregated galena particle from the air/ water interface using a centrifuge technique. 28 In addition to the detachment force, it is also important to consider the dynamics of the capture and attachment of particles dispersed in water by bubbles. This process is governed by the particle inertia and hydrodynamic forces involving a bubbleparticle collision followed by particle-bubble attachment.…”

Section: Discussionmentioning

confidence: 99%

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Foaming in Chemical Surfactant Free Aqueous Dispersions of Anatase (Titanium Dioxide) Particles

Rj¹

2007

Langmuir

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Steady-state dynamic aqueous foams were generated from surfactant-free dispersion of aggregated anatase nanoparticles (in the micrometer size range). In order to tune the particle surfaces, to ensure a critical degree of hydrophobicity (so that they disperse in water and generate foam), the particles were subjected to low-temperature plasma treatment in the presence of a vapor-phase silane coupling agents. From ESCA it was shown that hydrophobization only occurred at a small number of surface sites. Foamability (foam generation) experiments were carried out under well-defined conditions at a range of gas flow rates using the Bikermann Foaming Column.1 The volume of the steady-state foams was determined under constant gas flow conditions, but on removing the gas flow, transient foams with short decay times (<5 s) were observed. The foamability of the steady-state foams was found to be dependent on (a) the time of plasma treatment of the particles (surface hydrophobicity), (b) the particle concentration in the suspension, and (c) the state of dispersion of the particles. High foamability was promoted in the neutral pH regions where the charged particles were highly dispersed. In the low and high pH regions where the particles were coagulated, the foamability was considerably reduced. This behavior was explained by the fact that the large coagula were less easily captured by the bubbles and more easily detached from the interface (during the turbulent foaming conditions) than individual dispersed particles.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Foaming in Chemical Surfactant Free Aqueous Dispersions of Anatase (Titanium Dioxide) Particles

Rj¹

2007

Langmuir

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“…Froth flotation is one of the most important methods of mineral concentration, widely used in the mineral processing industry. It exploits the differences in the electrochemical properties of mineral surfaces, that is, between hydrophobic and hydrophilic surfaces, which either occur naturally or are artificially induced by chemical reagents [12]. It has been reported that efficient flotation of mineral particles occurs for particle diameters in the range of 10-150µm [13,14].…”

Section: Introductionmentioning

confidence: 99%

Liberation Studies of Composite Particles in Iperindo Gold-bearing Rock, Southwest Nigeria

Vincent¹,

Oyelola²,

Omole³

2019

AJN

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The research investigates the liberation size of composite particles in Iperindo lode deposit at Ilesha goldfield in Osun state, Nigeria. The sample of the gold ore was sourced from Iperindo and 3 kilograms of gold ore was prepared by crushing and grinding to 100% passing 710µm sieve. 300 grams of the prepared ore was charged into set of sieves arranged in √2 i.e from 500 µm to-45 µm mounted on automated sieve shaker and operated for 20 minutes. Atomic Absorption Spectrometry (AAS) and X-ray Fluorescence (XRF) were used to determine the elemental and chemical composition of the ore. The chemical analysis of the crude sample via X-ray Fluorescence Spectrometry (XRF) revealed that the crude sample contain high content of Fe, Ti, Mn and K. The traces of K, Ba and Rb, shows that composite particles in Iperindo gold-bearing rock ore was formed as a result of hydrothermal alteration and the characterization of the sieve fractions by Atomic Absorption specteometey shows-63µm +45µm has the highest gold content when compare to other seive fraction. This indicates that the optimum liberation size of gold in Iperindo gold-bearing rock is 45µm. Processing of gold, which is economical viable from the ore deposit using froth flotation is desirable. Hence, efficient flotation of the mineral particle at the optimum liberation size of 45µm which lies favorably within the range of 10-150µm sighted from literature, will lead to good recovery of the gold particle.

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On the modelling of the flotation process

Varbanov¹,

Forssberg²,

Hallin³

1993

International Journal of Mineral Processing

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The relationship between flotation and adhesion of galena particles to the air-solution interface

Cited by 13 publications

References 4 publications

Foaming in Chemical Surfactant Free Aqueous Dispersions of Anatase (Titanium Dioxide) Particles

Foaming in Chemical Surfactant Free Aqueous Dispersions of Anatase (Titanium Dioxide) Particles

Liberation Studies of Composite Particles in Iperindo Gold-bearing Rock, Southwest Nigeria

On the modelling of the flotation process

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