Bubble size distribution in cyclonic zone of a novel flotation column |
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| Authors: | Xiaowei Deng Jiongtian Liu Chuanxiang Zhang Changliang Shi Yang Lu |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, China;2. Coal Production Safety Collaborative Innovation Cenrer in Henan Province, Jiaozuo, China;3. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhenzhou, China |
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| Abstract: | In order to investigate bubble size distribution (BSD) in the cyclonic flotation column, a series of tests were conducted to study flow velocity distribution (FVD) and BSD by using the method of particle image velocimetry (PIV). Foaming performance of the n-octyl alcohol is more applicable than both of n-butyl alcohol and terpenic oil. At different circulation volume conditions, BSD range lies in 0–800 μm, and a large number of tiny bubbles (<90 μm) are generated. Besides, the curve presents a normal distribution in 90–180 μm. With the increase in circulation volume, bubble size decreases. BSD determined by cyclonic flow effect plays a crucial role on bubble mineralization with fine particle in cyclonic zone of the flotation column. |
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| Keywords: | Bubble size ditribution cyclonic flotation column flow velocity distribution |
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