Frother persistence: A measure using gas holdup

Azgomi, F.; Gómez, C.O.; Finch, J.A.

doi:10.1016/j.mineng.2009.03.013

Cited by 18 publications

(11 citation statements)

References 8 publications

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“…The decrease in froth volume with time combined with the much lower concentration of acetone after a steady state froth height was reached pointed towards the evaporation of acetone with time to concentration levels lower than the minimum concentration expected to delay the coalescence of bubble pairs. This result is consistent with the relatively volatile nature of acetone, which was found to be similar to some alcohols as reported by Azgomi et al [3]. The second aspect studied is the contribution of the chemistry of the continuous phase to the foaming properties of the dispersion (Table 1).…”

Section: Effect Of Residual Acetone On Foamingsupporting

confidence: 90%

Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride

Bournival

Ata

2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Effect Of Residual Acetone On Foamingsupporting

confidence: 90%

Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride

Bournival

Ata

2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…et al [9] that addition of frother increased the gas holdup while Azgomi et al [10] showed that increasing gas velocity decreased the persistence of frother and gas hold up. Also Zhou et al [11] indicates that the ratio of gas holdup is lower in the presence of Dowfroth 250 than MIBC.…”

Section: Parameters and Gas Holdup In Column Flotation 49mentioning

confidence: 99%

“…The effect of frother concentration on gas holdup had been studied by some of authors [7][8][9][10]. It was reported by Shukla et al [7], Matiolo et al [8], and Ityokumbul …”

mentioning

confidence: 98%

Investigation of Effective Parameters on the Gas Holdup in Column Flotation of a Coal Tailing Sample

Bahri

Shafaei

Karamoozian

2013

International Journal of Coal Preparation and Utilization

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This study presents the results of gas holdup investigation in a laboratory column flotation cell that was fed by coal tailings. The effect of process variables such as gas flow rate, feed flow rate, wash water flow rates, collector dosage, and frother dosage was investigated on the gas holdup. In this study, the pressure transducers were used to estimate the gas holdup in the column. Gas holdup was found to be strongly dependent on the superficial gas velocity. It was increased with increasing feed rate and frother dosage for a given air rate and also it was found that feed flow rate has a strong effect than frother dosage on the gas holdup in coal tailings processing.

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“…Alcohol frothers produce froths that are relatively shallow and "dry" (i.e. carry less water) [35] and have low persistence [36]. MIBC (methyl isobutyl carbinol) is the best-known frother in this group.…”

Section: Effect Of Frothers On Flotation Sub-processesmentioning

confidence: 99%

The Effects of Frothers and Particles on the Characteristics of Pulp and Froth Properties in Flotation—A Critical Review

Zhang¹

2016

JMMCE

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The pulp and froth zones are the main components of froth flotation as it defines both quality of the end product and overall efficiency. The importance of the properties of the two zones, which include pulp hydrodynamics, froth bubble coalescence rate, water overflow rate, air recovery, etc., is being increasingly recognized. The properties are depending not only on the type and concentration of the frother but also on the nature and amount of the particles present in the flotation system, and as well as the frother-particle interactions and potentially of bubble-particle interactions. To date, there is no specific criterion to quantify pulp and froth properties through the interactions between frothers and particles because the various related mechanisms occurring in the pulp and froth are not fully understood. Linking the properties to the metallurgical performance is also challenged. In order to better understand the effect of these issues in flotation, in this review paper, the past and recently published articles relevant to characterizations of pulp and froth properties are widely reviewed; the findings and the gap of knowledge in this area are highlighted for further research.

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Frother persistence: A measure using gas holdup

Cited by 18 publications

References 8 publications

Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride

Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride

Investigation of Effective Parameters on the Gas Holdup in Column Flotation of a Coal Tailing Sample

The Effects of Frothers and Particles on the Characteristics of Pulp and Froth Properties in Flotation—A Critical Review

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