(武漢工業(yè)大學(xué)資源與環(huán)境工程系， 武漢 430070)
摘 要: 小直徑水力旋流器直徑小， 離心力場強(qiáng)，液流微觀結(jié)構(gòu)復(fù)雜， 研究難度大。 從流體宏觀結(jié)構(gòu)和微細(xì)顆粒的群態(tài)運(yùn)動入手， 提出了“紊流 攜帶模型”，探討用新的參數(shù)研究小直徑旋流器微細(xì)分級的規(guī)律。 闡明了“紊流攜帶模型”的基本觀點, 和“相對攜帶量”、 “分級粒度dr”、“溢流水量分配”等主要參數(shù)的物理概念。在實驗研究的基礎(chǔ)上， 建立了與旋流器結(jié)構(gòu)和操作參數(shù)相關(guān)的溢流水量分配、分級粒度、 相對攜帶量3個數(shù)學(xué)方程。 高嶺土微細(xì)分級實驗表明數(shù)學(xué)方程計算值與實驗值吻合較好。該模型可用于小直徑旋流器的理論研究和部分工藝指標(biāo)的計算。
關(guān)鍵字: 關(guān)鍵詞: 小直徑旋流器 紊流攜帶模型 溢流水量分配 分級粒度 相對攜帶量
（Department of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China）
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 dr, 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.
Key words: small-diameter hydrocyclone turbulence-carrying model
distribution of overflowing separation size relative carrying capacity
