Research progress on the impact of mineral surface roughness on particle-bubble interaction

Mineral surface roughness is an important factor affecting flotation efficiency. Surface roughness can affect the hydrophobicity of minerals, the adsorption of reagents, and the rupture of liquid films between particles and bubbles, resulting in a significant impact on the interaction process betwee...

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Bibliographic Details
Published inMéitàn xuébào Vol. 48; no. 11; pp. 4171 - 4182
Main Authors Xiangning BU, Zheng TONG, Yujin SUN, Guangyuan XIE, Xianshu DONG
Format Journal Article
LanguageChinese
Published Editorial Office of Journal of China Coal Society 01.10.2023
Subjects
contact angle
interaction force
particle-bubble
rough surface
roughness measurement
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Summary:Mineral surface roughness is an important factor affecting flotation efficiency. Surface roughness can affect the hydrophobicity of minerals, the adsorption of reagents, and the rupture of liquid films between particles and bubbles, resulting in a significant impact on the interaction process between particles and bubbles. However, there is currently a lack of systematic review work on the influence of roughness on particle-bubble interaction process. Therefore, the authors firstly reviewed the surface roughening modification techniques and roughness testing methods. Secondly, the influence of roughness on the particle-bubble interaction process was systematically discussed from four aspects: flotation kinetics, contact angle, formation time of triple-phase contact line, and interaction force between particles and bubbles. The concept of roughness scale was proposed for its importance in the research of particle-bubble interactions. Thirdly, based on the coupling mechanism between roughness scale and mineral
ISSN:0253-9993
DOI:10.13225/j.cnki.jccs.2023.0698