一、前言水力旋流器乃是目前效率较高的一种脱泥分级设备.随着矿石贫化,结晶粒度变细,含泥量增加,选矿过程中要求脱出的粒度下限变细,势必应用大量的小口径水力旋流器才能满足工艺要求.可是,随着水力旋流器口径的缩小,如φ75,φ30毫米水力旋流器,沉砂嘴直径仅为φ7和φ3.5毫米,容易造成沉砂嘴堵塞不能正常工作;再者水力旋 I. INTRODUCTION Hydrocyclone is a kind of desilting grading equipment with high efficiency at present.As the ore is depleted, the crystal grain size becomes thinner and the clay content increases, the grain size lower limit required for pro- A large number of small-diameter hydrocyclones to meet the process requirements.However, with the hydrocyclone caliber reduced, such as φ75, φ30 mm hydrocyclone, grit nozzle diameter φ7 and φ3.5 mm, easily lead to Shen Mouth plug can not work properly;