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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F13%3A43895931%21RIV14-GA0-22340___
rdf:type
n11:Vysledek skos:Concept
dcterms:description
The attachment of bubbles onto a collecting surface plays a critical role in numerous practical processes. While mineral flotation deals with fine particles and larger bubbles, this work is focused on the opposite case of an interaction of a single rising bubble with a larger spherical particle, which falls down through a stagnant liquid. The collision is studied theoretically and experimentally. The theoretical model, based on an analysis of forces acting on the bubble, leads to a differential equation for the bubble motion. Both the mobile and immobile bubble surface is considered. The experimental bubble trajectory and velocity evolution are in good agreement with the theoretical model. The horizontal deflection of the bubble trajectory caused by the particle motion is dependent on the ratio of bubble terminal velocity and particle settling velocity. The influence of buoyancy, interception and inertial mechanisms on the collision efficiency is also examined. It is concluded that the buoyancy is the most significant mechanism for the interaction of small bubbles with large particles. The attachment of bubbles onto a collecting surface plays a critical role in numerous practical processes. While mineral flotation deals with fine particles and larger bubbles, this work is focused on the opposite case of an interaction of a single rising bubble with a larger spherical particle, which falls down through a stagnant liquid. The collision is studied theoretically and experimentally. The theoretical model, based on an analysis of forces acting on the bubble, leads to a differential equation for the bubble motion. Both the mobile and immobile bubble surface is considered. The experimental bubble trajectory and velocity evolution are in good agreement with the theoretical model. The horizontal deflection of the bubble trajectory caused by the particle motion is dependent on the ratio of bubble terminal velocity and particle settling velocity. The influence of buoyancy, interception and inertial mechanisms on the collision efficiency is also examined. It is concluded that the buoyancy is the most significant mechanism for the interaction of small bubbles with large particles.
dcterms:title
Efficiency of bubble-particle interaction Efficiency of bubble-particle interaction
skos:prefLabel
Efficiency of bubble-particle interaction Efficiency of bubble-particle interaction
skos:notation
RIV/60461373:22340/13:43895931!RIV14-GA0-22340___
n11:predkladatel
n12:orjk%3A22340
n3:aktivita
n15:P
n3:aktivity
P(GAP101/11/0806), P(LD13025)
n3:dodaniDat
n20:2014
n3:domaciTvurceVysledku
n8:6478700 n8:4568915
n3:druhVysledku
n21:D
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
72036
n3:idVysledku
RIV/60461373:22340/13:43895931
n3:jazykVysledku
n19:eng
n3:klicovaSlova
flotation; force analysis; collision efficiency; collision process; Bubble-particle interaction
n3:klicoveSlovo
n4:collision%20efficiency n4:collision%20process n4:Bubble-particle%20interaction n4:flotation n4:force%20analysis
n3:kontrolniKodProRIV
[A2A12C33C282]
n3:mistoKonaniAkce
Tatranské Matliare
n3:mistoVydani
Bratislava
n3:nazevZdroje
Proceedings of the 40th International Conference of Slovak Society of Chemical Engineering
n3:obor
n22:CI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n6:GAP101%2F11%2F0806 n6:LD13025
n3:rokUplatneniVysledku
n20:2013
n3:tvurceVysledku
Basařová, Pavlína Hubička, Martin
n3:typAkce
n17:WRD
n3:zahajeniAkce
2013-05-27+02:00
s:numberOfPages
5
n16:hasPublisher
Slovak Society of Chemical Engineering
n18:isbn
978-80-89475-09-4
n14:organizacniJednotka
22340