小直径水力旋流器微细分级模型

来源期刊：中国有色金属学报1998年第3期

论文作者：宋振东

文章页码：492 - 496

关键词：小直径旋流器； 紊流携带模型； 溢流水量分配； 分级粒度； 相对携带量

Key words：small-diameter hydrocyclone ； turbulence-carrying model ； distribution of overflowing； separation size ；relative carrying capacity

摘    要：小直径水力旋流器直径小， 离心力场强，液流微观结构复杂， 研究难度大。 从流体宏观结构和微细颗粒的群态运动入手， 提出了“紊流 携带模型”，探讨用新的参数研究小直径旋流器微细分级的规律。 阐明了“紊流携带模型”的基本观点, 和“相对携带量”、 “分级粒度d_r”、“溢流水量分配”等主要参数的物理概念。在实验研究的基础上， 建立了与旋流器结构和操作参数相关的溢流水量分配、分级粒度、 相对携带量3个数学方程。 高岭土微细分级实验表明数学方程计算值与实验值吻合较好。该模型可用于小直径旋流器的理论研究和部分工艺指标的计算。

Abstract: Based on the analysis of fluid microstructure and the group movement of ultrafine particles, the turbulence-carrying model has been proposed and it has been used to explain the law of classification of ultrafine particles in the small-diameter hydrocyclone with new parameters. The basic idea about “turbulence-carrying model” and the physical concepts for the main parameters, such as relative carrying capacity, separation size d_r, distribution of overflowing water, have been delineated. Based on the experiment, three equations for distribution of overflowing water, separation size and relative carrying capacity were established, which are interrelated with the structure and the operation parameters of hydrocyclones. The experiment of the kaolin classification of ultrafine particles showed that the computation value coincides well with the experimental value . The model can be applied to the theoretical study of the classification of small-diameter hydrocyclone and the computation of process index to some degrees.