当今重选厂中使用的φ500、φ300、φ125、φ75毫米等各种不同规格的水力旋流器,在分级脱泥作业均起重要作用,但仍有不少问题。分级效率较低,沉砂含泥量高,溢流含砂量也不少,粒级归队不甚理想;脱泥旋流器除上述问题突出外,如φ75毫米脱泥旋流器,沉砂富集比较低,一般为1.5～2倍,浓度也较低,一般为14～20％,溢流金属损失较大。另一主要问题是沉砂嘴较小,一般为φ6～8毫米,容易堵塞,难于正常工作。水力旋流器所存在诸种似乎难于 In today’s re-election plant used φ500, φ300, φ125, φ75 mm, and other different specifications of the hydrocyclone in the grading mud removal operations play an important role, but there are still many problems. Grading efficiency is lower, grit sediment is high, a lot of overflow sand, grain rejoin less than ideal; mud removal cyclone in addition to the above problems, such as φ75 mm desliming cyclone, grit Enriched relatively low, generally 1.5 to 2 times the concentration is also low, usually 14 to 20%, larger overflow metal loss. Another major problem is that the grit nozzle is small, usually φ6 ~ 8 mm, easy to plug, difficult to work properly. The existence of hydrocyclones may seem difficult