High-Efficiency Nanobubble Coal Flotation
| Autor: | Daniel Tao, Ahmed Sobhy |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Range (particle radiation)
business.industry Chemistry Mechanical Engineering General Chemical Engineering Energy Engineering and Power Technology Mineralogy Geotechnical Engineering and Engineering Geology Fuel Technology Chemical engineering Cavitation Particle Coal Particle size Froth flotation business |
| Zdroj: | International Journal of Coal Preparation and Utilization. 33:242-256 |
| ISSN: | 1939-2702 1939-2699 |
| Popis: | The high efficiency of a froth flotation process is limited to a narrow particle size range. Nanobubbles integrated into a specially designed flotation column expanded the particle size range for effective froth flotation as a result of increased probabilities of particle-bubble collision and attachment and reduced probability of detachment. Results show that combustible recovery of a −150 μm coal sample increased by 5%–50% in the presence of nanobubbles. Nanobubble also increased the kinetic flotation rate constant by more than 40%. Other major advantages of the nanobubble flotation process include lower collector dosage since nanobubbles are produced selectively on hydrophobic particle surface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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