提到细颗粒自由沉降末速度的计算,人们自然会想到著名的斯托克斯公式。但是,斯托克斯公式只适用雷诺数Re<0.5的范围,即如果计算的是球形石英颗粒,只适用于直径<0.085mm的粒级。实际上,选矿厂磨矿以后的作业,如分级、浓密(沉降)、脱水(溢流)等所遇到的石英颗粒直径,一般为-0.15mm(-200目占70～80％)。这样,为了要系统计 Mentioning the calculation of the ultimate free-fall velocity of fine particles, one would naturally think of the famous Stokes formula. However, the Stokes formula applies only to a Reynolds number Re <0.5 range, that is, if spherical silica particles are calculated, only for fractions <0.085 mm in diameter. In fact, the diameter of the quartz grains encountered by the concentrator after grinding such as grading, dense (sedimentation), dehydration (overflowing), etc. is generally -0.15 mm (-200-200 mesh 70-80%). In this way, in order to system statistics