Kernel functions to flotation bubble size distributions

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaKonferenssiesitys

Tutkijat

Organisaatiot

  • Université de Lorraine

Kuvaus

The physical performance of flotation excessively determined by the bubble size distribution (BSD). Although the BSD can be measured the underlying effects of different variables causing changes in dispersion and coalescence rates producing changes in the measured BSD´s is not well understood. The bubble-fluid boundary chemistry affects the coalescence rate but the details of the mechanisms are not clear, as surfactants tend to fall under some distinct types of behaviour.
We discuss the effects of volumetric coalescence rate and its effects on the BSD measured at the quiescent zones of a flotation machine. The local flow conditions, and number concentration of bubbles in an observation volume will dictate the bubble collision probability while the bubble surface curvature and the surface properties will dictate the film drainage time for a successful coalescence. This type of a model allows the separate study of the two major kernel functions (dispersion and coalescence).

Yksityiskohdat

AlkuperäiskieliEnglanti
TilaJulkaistu - 12 marraskuuta 2017
TapahtumaInternational Flotation Conference - Vineyard Hotel, Cape Town, Etelä-Afrikka
Kesto: 13 marraskuuta 201716 marraskuuta 2017
Konferenssinumero: 8

Conference

ConferenceInternational Flotation Conference
LyhennettäFlotation '17
MaaEtelä-Afrikka
KaupunkiCape Town
Ajanjakso13/11/201716/11/2017

ID: 16591386