摘要：为了解决柱锥旋流器一次分级只能得到2种产品,且粒级范围较宽,难以满足后续分选设备的入料粒级要求的问题,提出一种新型的多产品旋流器,一次分级可以得到4种窄粒径范围产品;通过性能试验研究其结构参数对分离性能的影响规律。结果表明:入料中粒径为10μm以下的颗粒质量分数为6.22%时,一次分级得到4种细粒级颗粒的质量分数分别为62.83%、2%、46.54%、35.25%;随底流口直径增大,一段底流质量分数减小12.48%,产率增大2.68%,粒径变小,内溢流产率减小1.48%;内溢流管的插入深度直接影响旋流器的分离性能,当内外溢流管插入深度相同时,内溢流质量百分数达0.4%,产率最大达1.89%。

关键词：多产品旋流器；结构参数；浓度；产率

Abstract：In order to solve the problem that only two kinds of products with wide particle size can be obtained by the traditional cyclone classification, and it is difficult to meet the requirement of the subsequent equipment, a new type of multi-product hydrocyclone was presented, by which four kinds of narrow size range products were obtained after the classification once. Then the experimental study was carried out to explore the influence of the structural parameters on the separation performance. The results show that, the content of fine particles lower than 10 μm in the feed slurry and the contents of four kinds of narrow size range products obtained after the classification once are 6.22%,62.83%, 2%, 46.54%, 35.25%, respectively. With the increase of the underflow orifice diameter, for the first section underflow,the mass fraction decreases 12.48% and the yield increases2.68%, and its granularity become fine. At the same time, the yield of the inner overflow decreases 1.48%. The experimental data also indicates that, the insertion depth of the inner overflow tube affects the separation performance directly. When the internal and external overflow pipe are inserted into the same depth, the mass fraction and yield of the inner overflow reach their maximum value of 0.4% and 1.89% respectively.

Keywords: multi-product hydrocyclone； structure parameter； concentration； yield