尾矿浆浓度与超声波衰减系数的关系研究
Research on relationship between tailing slurry concentration and ultrasonic attenuation coefficient
【索引】汪建新,程俊豪.尾矿浆浓度与超声波衰减系数的关系研究[J].工矿千亿国际app下载,2020,46(2):45-49.
【Reference】WANG Jianxin,CHENG Junhao.Research on relationship between tailing slurry concentration and ultrasonic attenuation coefficient[J].Industry and Mine Automation,2020,46(2):45-49.
【DOI】10.13272/j.issn.1671-251x.2019050038
【作者】 汪建新,程俊豪
【Author】 WANG Jianxin,CHENG Junhao
【作者机构】内蒙古科技大学 机械工程学院, 内蒙古 包头014000
【Unit】College of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China
【摘要】针对目前基于超声波法的尾矿浆浓度测量方法没有直接表达浓度与散射衰减系数、黏滞衰减系数的相关关系的问题,采用数值计算方法,研究了超声波在尾矿浆中的衰减特性,得到了声波衰减系数与浓度的相关关系,并通过实验数据的分析论证了数值计算的准确性。研究结果表明:浓度在10%以内时,浓度越大,声速越小;浓度在5%以内时,超声波的衰减系数与浓度近似成正比关系;当超声波频率、粒径一定,浓度在10%以内时,浓度越大,超声波的衰减系数越大。研究结果为超声波在尾矿浆浓度在线监测中的实际应用提供了依据。
【Abstract】In view of problem that the current tailing slurry concentration measurement method based on ultrasonic method does not directly express correlation between concentration and scattering attenuation coefficients and viscous attenuation coefficients, the attenuation characteristics of ultrasonic wave in tailing slurry were studied by numerical calculation method, and the correlation between acoustic attenuation coefficient and concentration was obtained, and the accuracy of numerical calculation is demonstrated through experimental data. The research results show that within the concentration of 10%, the greater the concentration, the lower the speed of sound; within the concentration of 5%, the attenuation coefficient of ultrasonic wave is approximately proportional to the concentration; when the ultrasonic frequency and particle size are constant, within the concentration of 10%,the greater the concentration, the greater the attenuation coefficient of the ultrasound. The research results provide a basis for the practical application of ultrasound in online monitoring of tailings slurry concentration.
【关键词】 尾矿浆浓度; 超声波检测; 衰减系数; 黏滞衰减系数; 散射衰减系数
【Keywords】tailing slurry concentration; ultrasonic testing; attenuation coefficient; viscous attenuation coefficient; scattering attenuation coefficient
【文献出处】工矿千亿国际app下载,2020年2期
【基金】国家自然科学基金资助项目(51365033);内蒙古科技创新引导奖励基金项目(2015CXYD-3)。
【分类号】TD85
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