| 塑料浮选分离中气泡-颗粒的黏附行为 |
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| 作者姓名： | 赵钺 黄佳 张海峰 李彦鹏 |
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| 作者单位： | 1. 长安大学环境科学与工程学院, 西安 710054;
2. 长安大学旱区地下水文与生态效应教育部重点实验室, 西安 710054 |
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| 基金项目： | 中央高校基本科研业务专项基金(2013G2291013)和流体动力与机电系统国家重点实验室开学基金(GZKF-201026)资助 |
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| 摘 要： | 采用高速摄影技术结合粘附时间模型,在实验室规格的浮选柱中研究表面活性剂浓度、类型及塑料材质对气泡在塑料球面黏附行为的影响.结果表明:气泡的最大反弹距离和黏附时间随着表面活性剂浓度的增大而逐渐减小.表面活性剂类型及塑料材质会影响气泡的黏附行为,其深层原因是表面活性剂对气泡尺寸的抑制及溶液表面张力和接触角的减小.
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| 关 键 词： | 表面活性剂 塑料浮选 气泡 黏附行为 高速摄影 |
| 收稿时间： | 2015-03-13 |
| 修稿时间： | 2015-07-07 |
Bubble-particle attachment behavior in flotation process of plastics |
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| Authors: | ZHAO Yue HUANG Jia ZHANG Haifeng LI Yanpeng |
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| Institution: | 1. School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China;
2. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an 710054, China |
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| Abstract: | To examine the bubble attachment behavior in flotation process of plastics, the high-speed photographic method, combined with a simple attachment time model, was employed in the experiments carried out in a laboratory-scale flotation column. Effects of the plastic material and the type and concentration of surfactant were analyzed in detail. Results show that the maximum rebound distance and attachment time decrease with surfactant concentration. The type of surfactant and plastic material influence bubble attachment behavior, and the reductions of the bubble size and the solution tension and contact angle are the deep incentives. |
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| Keywords: | surfactant plastic flotation bubble attachment behavior high-speed photography |
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