Abstract
ABSTRACT In coal flotation, clean coal ash content is controlled by adjusting different operating parameters to meet the requirements for products. However, real-time control is strictly restricted by the traditional ash detection method, which is very time-consuming. Froth phase plays an important role in both transporting and upgrading flotation concentrate. The correlation between clean coal ash content and froth property is of great importance to monitor, predict, and control the flotation process. In this review, 14 important froth features related to the concentrate grade are summarized to comprehensively understand the complicated three-phase froth. Foam structure and foam destabilization mechanisms including foam drainage, bubble coalescence, bubble coarsening, and liquid film rupture are introduced, which help us better understand why the froth properties are related to concentrate grade. However, very coarse or highly hydrophobic coal particles could cause inconsistencies in the correlation between concentrate grade and froth properties compared with that in metal ore flotation. The challenges and suggestions in predicting clean coal ash content based on froth characteristics are finally discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Coal Preparation and Utilization
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
