A test of the Tate equation to predict bubble size at an orifice in the presence of frother

Hernandez-Aguilar, Jose R.; Cunningham, Ryan; Finch, J.A.

doi:10.1016/j.minpro.2005.12.003

Cited by 29 publications

(18 citation statements)

References 18 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4% decrease from 0 to 144.4 μM for F150 and 2% from 0 to 175.1 μM for DF250). This is consistent with the observation of Hernandez-Aguilar et al 22 They further concluded that the impact of the frother on reducing the bubble size cannot be explained solely by the decrease in equilibrium surface tension, even under quasi-static conditions. One reason may be that equilibrium is still not attained, but there could be others.…”

Section: ■ Discussionsupporting

confidence: 92%

Using Sound To Study the Effect of Frothers on the Breakaway of Air Bubbles at an Underwater Capillary

Chu

Pax²,

et al. 2017

Langmuir

Self Cite

View full text Add to dashboard Cite

Frothers, a class of surfactants, are widely employed in froth flotation to aid the generation of small bubbles. Their action is commonly explained by their ability to hinder coalescence. There are occasional references suggesting that the frother may also play a role in the initial breakup of the injected air mass. This work investigates the possible effect of the frother on breakup by monitoring air bubbles produced quasi-statically at an underwater capillary. Under this condition, breakup is isolated from coalescence and an impact of frothers on the detached bubble can be ascribed to an impact on breakup. The breakaway process was monitored by an acoustic technique along with high-speed cinematography. The results showed that the presence of frothers did influence the breakaway process and that the acoustic technique was able to detect the impact. It was demonstrated that the acoustic frequency and acoustic damping ratio depend upon the frother type and concentration and that they are associated with a liquid jet, which initially excites the bubble and then decays to form a surface wave. The addition of the frother did not influence the formation of the jet but did increase its decay rate, hence, dampening the surface wave. It is postulated that the action of the frother is related to an effect on the magnitude of surface tension gradients.

show abstract

Section: ■ Discussionsupporting

confidence: 92%

Using Sound To Study the Effect of Frothers on the Breakaway of Air Bubbles at an Underwater Capillary

Chu

Pax²,

et al. 2017

Langmuir

Self Cite

View full text Add to dashboard Cite

show abstract

“…Laboratory bubble size from an orifice is controlled by several factors such as orifice diameter, gas flux (Vazquez et al, unpublished data), orientation (Winkel et al 2004), horizontal water velocity (Tsuge et al 1981), and surfactant contamination (Hernandez-Aguilar et al 2006) including bubble oiliness (Leifer and Boles 2005). Φ for the range of capillary tubes used in the present laboratory studies was well described by a Gaussian function.…”

Section: Minor Ventsmentioning

confidence: 83%

Formation of seep bubble plumes in the Coal Oil Point seep field

Leifer

Culling

2010

Geo-Mar Lett

View full text Add to dashboard Cite

The fate of marine seep gases (transport to the atmosphere or dissolution, and either bacterial oxidation or diffusion to the atmosphere) is intimately connected with bubble and bubble-plume processes, which are strongly size-dependent. Based on measurements with a video bubble measurement system in the Coal Oil Point seep field in the Santa Barbara Channel, California, which recorded the bubble-emission size distribution (Φ) for a range of seep vents, three distinct plume types were identified, termed minor, major, and mixed. Minor plumes generally emitted bubbles with a lower emission flux, Q, and had narrow, peaked Φ that were well described by a Gaussian function. Major plumes showed broad Φ spanning very small to very large bubbles, and were well described by a power law function. Mixed plumes showed characteristics of both major and minor plume classes, i.e., they were described by a combination of Gaussian and power law functions, albeit poorly. To understand the underlying formation mechanism, laboratory bubble plumes were created from fixed capillary tubes, and by percolating air through sediment beds of four different grain sizes for a range of Q. Capillary tubes produced a Φ that was Gaussian for low Q. The peak radius of the Gaussian function describing Φ increased with capillary diameter. At high Q, they produced a broad distribution, which was primarily described by a power law. Sediment-bed bubble plumes were mixed plumes for low Q, and major plumes for high Q. For low-Q sedimentbed Φ, the peak radius decreased with increasing grain size. For high Q, sediment-bed Φ exhibited a decreased sensitivity to grain size, and Φ tended toward a power law, similar to that for major seep plumes.

show abstract

“…(11) shows another example for DF-250 produced by two different American and Canadian manufacturers, in term of surface activity. In experience, polyglycol ethers produced from butanol and ethylene oxide are more selective and have better carrying power than similar frothers produced from butanol and caustic soda [7,30].…”

Section: D) Polyglycol Ethersmentioning

confidence: 99%

Flotation Frothers: Review of Their Classifications, Properties and Preparation

Khoshdast¹

2011

TOMPJ

View full text Add to dashboard Cite

Abstract:The importance of frothers in flotation is widely acknowledged, particularly in terms of their role with respect to bubble size, and the stability and mobility of the froth phase. These factors play a significant role in the kinetic viability of the process, and the overall recovery and the grade that can be achieved from a flotation cell or circuit. About 60 years ago, Wrobel [1] presented a comprehensive review of flotation frothers, their action, properties and structures. However, during recent six decades flotation reagent technology has undergone considerable evolutions and innovations. The aim of the present review is to provide an updated, comprehensive database comprising recent developments in flotation frother technology as well as some historical aspects. Different types of flotation frothers are discussed regarding to their classifications, properties, and preparation methods. New classification schemes have been suggested in parallel with introducing new characterization criteria. New classes of frothers are actually conventional frothers modified by incorporating certain functional "group" or "atoms" into their molecular structure. Like particle surface modifiers, frothers are also influenced by biotechnology, leading to introducing a new class of frothers named as "biofrothers".

show abstract

A test of the Tate equation to predict bubble size at an orifice in the presence of frother

Cited by 29 publications

References 18 publications

Using Sound To Study the Effect of Frothers on the Breakaway of Air Bubbles at an Underwater Capillary

Using Sound To Study the Effect of Frothers on the Breakaway of Air Bubbles at an Underwater Capillary

Formation of seep bubble plumes in the Coal Oil Point seep field

Flotation Frothers: Review of Their Classifications, Properties and Preparation

Contact Info

Product

Resources

About