| Bubble size measurement in three-phase system using photograph technology |
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| 引用本文： | 孙伟 胡岳华 刘润清. Bubble size measurement in three-phase system using photograph technology[J]. 中南工业大学学报(英文版), 2005, 12(6): 677-681. DOI: 10.1007/s11771-005-0068-z |
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| 作者姓名： | 孙伟 胡岳华 刘润清 |
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| 作者单位： | School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China |
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| 基金项目： | Project（50234010） supported by the National Natural Science Key Foundation of China; project（50304013） supported by the National Natural Science Foundation of China |
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| 摘 要： | A special experiment setup was designed to observe the interaction between bubbles and particle in flotation cell and to analyze the bubble characteristics such as bubble size, distribution and bubble-loading efficiency. Bubbles in water-gas system and three-phase system were measured. The results indicate that with the current setup the bubbles as small as 10μm can be easily distinguished. The average size of the bubbles generated under the given conditions in two-phase system is 410μm at frother concentration of 0. 004%, which is in good correspondence with the results of other works. The effect of frother on bubble size was probed. Increasing frother concentration from 0 to 0. 004% causes a reduction of bubble size from 700 to 400μm. The bubble loading efficiency was reported. The result indicates that the fine particle is more easily entrapped than the coarse particle. Some factors, which have effect on measurement accuracy were discussed. The aeration speed has a significant effect on the accuracy of results, if it surpasses 30 mL/s, and the image becomes unclear due to the entrapment of fine particle. Another factor, which can affect observing results, is the sampling position. At a wrong sampling position, the images become unclear.
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| 关 键 词： | 浮选 泡沫尺寸测量 摄影技术 三相系统 选矿 |
| 文章编号： | 1005-9784（2005）06-0677-05 |
| 收稿时间： | 2005-05-30 |
| 修稿时间： | 2005-08-18 |
Bubble size measurement in three-phase system using photograph technology |
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| Sun Wei , Hu Yue-hua and Liu Run-qing. Bubble size measurement in three-phase system using photograph technology[J]. Journal of Central South University of Technology, 2005, 12(6): 677-681. DOI: 10.1007/s11771-005-0068-z |
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| Authors: | Sun Wei Hu Yue-hua Liu Run-qing |
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| Affiliation: | (1) School of Resources Processing and Bioengineering, Central South University, 410083 Changsha, China |
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| Abstract: | A special experiment setup was designed to observe the interaction between bubbles and particle in flotation cell and to analyze the bubble characteristics such as bubble size, distribution and bubble-loading efficiency. Bubbles in water-gas system and three-phase system were measured. The results indicate that with the current setup the bubbles as small as 10 μm can be easily distinguished. The average size of the bubbles generated under the given conditions in two-phase system is 410 μm at frother concentration of 0.004%, which is in good correspondence with the results of other works. The effect of frother on bubble size was probed. Increasing frother concentration from 0 to 0.004% causes a reduction of bubble size from 700 to 400 μm. The bubble loading efficiency was reported. The result indicates that the fine particle is more easily entrapped than the coarse particle. Some factors, which have effect on measurement accuracy were discussed. The aeration speed has a significant effect on the accuracy of results, if it surpasses 30 mL/s, and the image becomes unclear due to the entrapment of fine particle. Another factor, which can affect observing results, is the sampling position. At a wrong sampling position, the images become unclear. |
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| Keywords: | bubble size measurement photographic observation method flotation fine particles |
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