A novel method for measuring film thickness of oily bubbles and its effect on attachment time in oily-bubble flotation

Oily-bubble flotation technology has been proven to be an effective separation method for low rank/oxidized coals, and difficult-to-float minerals, in which oily bubbles as a carrier replacing air bubbles are the key. This study proposed a novel method for measuring the film thickness of oily bubble...

Full description

Saved in:
Bibliographic Details
Published in:Fuel (Guildford) 2019-04, Vol.241, p.985-988
Main Authors: Chen, Songjiang, Tao, Xiuxiang, Cheng, Gan, Zhu, Xiangnan, Gui, Dongjiao
Format: Article
Language:English
Subjects:
Air bubbles
Attachment
Attachment time
Bubbles
Film thickness
Flotation
Interference
Light effects
Mineralization
Oily bubbles
Thickness measurement
Thin film
Ultraviolet light spectrophotometer
Ultraviolet radiation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Oily-bubble flotation technology has been proven to be an effective separation method for low rank/oxidized coals, and difficult-to-float minerals, in which oily bubbles as a carrier replacing air bubbles are the key. This study proposed a novel method for measuring the film thickness of oily bubbles, which is based on the light interference combining with an ultraviolet light spectrophotometer. Moreover, the effect of oil film thickness on the mineralization was investigated with an induction time instrument. The results indicated that the increase in oil film thickness caused the decrease in attachment time, and was thereby conducive to the attachment of the coal particles on oily bubbles. This work may enrich the knowledge in the branch of coal flotation.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2018.12.114