• Vol 7, No 6 (2016)
  • Mechanical Engineering

Visualization of Angular Particle-Bubble Surface Interaction using a High Speed Video Camera

Warjito , Harinaldi , Manus Setyantono


Publish at : 31 Oct 2016 - 00:00
IJtech : IJtech Vol 7, No 6 (2016)
DOI : https://doi.org/10.14716/ijtech.v7i6.1056

Cite this article as:
Warjito., Harinaldi., & Setyantono, M. 2016. Visualization of Angular Particle-Bubble Surface Interaction using a High Speed Video Camera. International Journal of Technology. Volume 7(6), pp.1045-1053
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Warjito Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Harinaldi Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Manus Setyantono Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
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Abstract

Flotation is an important process in mining industries. This process employs the bubble and hydrophobic properties of a particle to separate valuable mining particles from impurities. The most important phenomenon in determining flotation efficiency is the bubble-particle interaction; therefore, understanding this phenomenon is very important. The aim of this research is to study the mechanism of bubble-particle interactions with and without the addition of a collector. The experimental setup consists of a water container, bubble generator, particle feeding system, and an image capturing system. The water container is made from transparent material of a size large enough so that the wall’s effects on bubbles and particles can be neglected. Air bubbles are generated by a bubble generator which consists of a small nozzle and programmable syringe pump. A high speed video camera and halogen lamp backlighting system are used as image capturing devices. Observation of the images reveals that bubble-particle interaction follows the stages of bubble-particle collision, particle attached to the bubble, and particle detached from the bubble. The addition of a collector to the liquid affects the bubble-particle interactions.

Angular particle; Bubble; Collector; Flotation; Interaction; Mining