Results 161 to 170 of about 1,572 (208)
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Frother Analysis in Industrial Flotation Cells
Canadian Metallurgical Quarterly, 2010AbstractFlotation is a separation process based on the collection of particles on the surface of bubbles. Flotation machines disperse air into bubbles using a variety of techniques. The characteristics of the bubble population are strongly affected by the selection of frother type and concentration.
C O Gómez, J A Finch
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Frothers and frother blends: a structure - function study
, 2012 The presence of frother, either singly or as a blend, is common to most mineral flotation processes. Frothers have two main functions: provide target hydrodynamic conditions and promote froth stability. In the thesis hydrodynamics is measured by bubble size and gas holdup and froth stability by water overflow rate.
Zhang, Wei
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Frother Concentration Measurement With a Benchtop NMR Spectrometer [PDF]
Minerals Engineering, 2022 In the present study, the previously developed frother concentration analysis technique based on the solid phase extraction process and the cryogen-free benchtop NMR is extended.
Liguang Wang +2 more
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Indirect Measurement of Frother Concentration Based on l-CCC Curves [PDF]
Minerals Engineering, 2016 The local critical coalescence concentration l-CCC presents a relationship between frother concentration and the gas flow rate Q(g)' at which coalescence starts to occur at a capillary tube.
Willy Kracht
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Evaluation of Frother Performance in Coal Flotation: A Critical Review of Existing Methodologies
Mineral Processing and Extractive Metallurgy Review, 2008 Separation efficiency in flotation depends, to a considerable extent, on the efficiency of the frother used. A successful frother must achieve a delicate balance between froth stability and non-persistency.
Dey, Shobhana, Bhattacharya, S
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Mineral Processing and Extractive Metallurgy Review, 1989
Abstract This paper summarizes current plant practice involving frothers. Included is a brief review of the several mechanisms proposed for froth formation and particle-bubble attachment and discussion of frother-collector surface complexes, important practical attributes of frothers, the effect of collector on froth properties, the importance of ...
RONALD D. CROZIER, RICHARD R. KLIMPEL
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Abstract This paper summarizes current plant practice involving frothers. Included is a brief review of the several mechanisms proposed for froth formation and particle-bubble attachment and discussion of frother-collector surface complexes, important practical attributes of frothers, the effect of collector on froth properties, the importance of ...
RONALD D. CROZIER, RICHARD R. KLIMPEL
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Floatability of polymer materials modulated by frothers
Waste Management, 2013Flotation tests of 35 polymer materials were carried out to investigate their floatability modulated by frothers. Results of flotation tests demonstrated that polymer resins and soft PVC showed high floatability, floatability of hard PVC plastics was relatively low and was related to the frothers, and there exists significant difference in the ...
Hui, Wang +2 more
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Effect of frothers on bubble size
International Journal of Mineral Processing, 2005Abstract The size of bubbles in flotation cells was measured using the UCT bubble size meter and the HUT bubble size analyser. While both methods provided similar critical coalescence concentration (CCC) values for the three tested frothers, they also revealed important differences.
Rodrigo A. Grau +2 more
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An improved class of flotation frothers
International Journal of Mineral Processing, 2000Abstract Incorporating certain functional groups or atoms into surfactant molecules can have a dramatic impact on the surface activity of the chemicals. This paper summarizes how the introduction of sulfur atom into polyalkylene oxide frother molecules increased metal recovery, both copper and molybdenum, in the flotation of porphyrry ores.
Guy H Harris, Renhe Jia
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Surface tension of collector‐frother mixtures
Journal of Applied Chemistry, 1967AbstractThio‐compound collectors and frothers produce, in aqueous solution, a smaller lowering of surface tension than other collectors. the surface tension of a solution of a collector‐frother mixture is intermediate between those of the individual reagent solutions, when the concentrations of both are in the vicinity of surface saturation, but when ...
M. A. Malati, A. A. Yousef
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