Collision of a small rising bubble with a large falling particle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F13%3A43895933" target="_blank" >RIV/60461373:22340/13:43895933 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/13:00392128

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.minpro.2013.02.013" target="_blank" >http://dx.doi.org/10.1016/j.minpro.2013.02.013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.minpro.2013.02.013" target="_blank" >10.1016/j.minpro.2013.02.013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Collision of a small rising bubble with a large falling particle

Popis výsledku v původním jazyce

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 theoreticalmodel, based on an analysis of forces acting on the bubble, leads to a differential equation for the bubblemotion. Both themobile and immobile bubble surfaces are 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. Theinfluence 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.

Název v anglickém jazyce

Collision of a small rising bubble with a large falling particle

Popis výsledku anglicky

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 theoreticalmodel, based on an analysis of forces acting on the bubble, leads to a differential equation for the bubblemotion. Both themobile and immobile bubble surfaces are 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. Theinfluence 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GAP101%2F11%2F0806" target="_blank" >GAP101/11/0806: Vliv povrchově aktivních látek na proudění ve vícefázových systémech</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Mineral Processing

ISSN

0301-7516

e-ISSN

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Svazek periodika

121

Číslo periodika v rámci svazku

10 June 2013

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

21-30

Kód UT WoS článku

000324296400022

EID výsledku v databázi Scopus

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