Small-diameter hydrocyclones: Performance prediction by empirical models

Abstract

Empirical models are now used for predicting the performance of hydrocyclones in terms of capacity, cut size (d50,c), water split and partition curve. These models (such as the model by Lynch and Rao and the model by Plitt) were developed and checked for hydrocyclones with diameters larger than 4 in. However, for smaller-diameter hydrocyclones, little empirical modeling has been done. This paper reports on an extended experimental research program on small hydrocyclones. For these cyclones, the suitability of existing empirical models was investigated and their accuracy was compared. To improve the predictive capability of these models to small cyclones, modifications to the equations are proposed.