A special nanobubble generation system has been developed for evaluating the effect of nanobubble on froth flotation. In this study, an eight-factor five-level Central Composite Experimental Design was conducted for investigating eight important parameters governing the median size and the volume of nanobubbles. These process parameters included surfactant concentration, dissolved oxygen (O2) content, dissolved carbon dioxide gas (CO2) content, pressure drop in cavitation tube nozzle, <50 nm hydrophobic particle concentration, <50 nm hydrophilic particle concentration, slurry temperature and the time interval after nano- bubble generation. The properties, stability and uniformity of nanobubbles were investigated. The study of the produced nanobubble's effects on the characteristics of microbubble solutions and millimeter scale bubble solutions was performed in a 50.8 mm column.
|Number of pages||19|
|Journal||Mining Science and Technology|
|State||Published - Jan 2010|
Bibliographical noteFunding Information:
The authors wish to acknowledge the Florida Institute of Phosphate Research (FIPR), the Center for Advanced Separation Technologies (CAST) and the National Natural Science Foundation of China (Nos.50921002 and 90510002) for the financial support. Special thanks to the Director of CAST, Dr. Roe-Hoan Yoon and the project manager of FIPR, Dr. Patrick Zhang for their valuable advice and support.
- Zeta potential
- froth flotation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Geotechnical Engineering and Engineering Geology
- Energy Engineering and Power Technology
- Geochemistry and Petrology
- Electrical and Electronic Engineering