| Bubble size as a function of some situational variables in mechanical flotation machines简 |
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| 引用本文： | ZHANG Wei,Jan E. Nesset,James A. Finch. Bubble size as a function of some situational variables in mechanical flotation machines简[J]. 中南工业大学学报(英文版), 2014, 0(2): 720-727 |
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| 作者姓名： | ZHANG Wei Jan E. Nesset James A. Finch |
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| 基金项目： | Project supported by the Collaborative Research and Development Program of NSERC（Natural Sciences and Engineering Research Council of Canada）with Industrial Sponsorship from Vale,Teck Cominco,Xstrata Process Support,Agnico-Eagle,Shell Canada,Barrick Gold,COREM,SGS Lakefield Research and Flottec |
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| 摘 要： | The specific results of the work investigating the effect of gas density and water temperature on bubble size were present.These were surrogate variables designed to investigate the effect of viscosity（varying water temperature） and altitude（varying gas density）.The results show that there is a measurable but relatively small effect of gas density on bubble size.The D32 is revealed to increase proportionally as（ρ0/ρg）0.132.The projected impact on flotation kinetics at 4500 m versus sea level is small,of the order of 0.5% recovery loss for a bank of eight flotation cells.The effect of water temperature（4-40 °C） on bubble size is more significant than gas density.The relationship correlates with water viscosity values quite closely.A finding that D32 increases proportionally as（μ/μ20）0.776 highlights the importance of accounting for viscosity effects if,for example,large process temperature fluctuations or deviation from design/test conditions are expected.
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| 关 键 词： | 搅拌式浮选机 气泡尺寸 气体密度 机械 水温度 浮选动力学 粘度值 温度波动 |
Bubble size as a function of some situational variables in mechanical flotation machines |
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| Affiliation: | [1]Mining and Mineral Resources Division, Department of Business Administration, Chinalco China Copper Corporation Limited, Beijing 100082, China; [2]Department of Mining and Materials Engineering, McGill University, Montreal, QC, H3A 0C5, Canada |
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| Abstract: | flotation frother bubble size viscosity altitude |
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| Keywords: | flotation frother bubble size viscosity altitude |
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