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水力旋流器的分级性能,是指矿浆中悬浮着的各种粘度的固体颗粒群按某一粒度进行分离的能力。分级性能一般用分级粒度、分级效率和分级精度来表示。底流管排出物按粒级分配的表示方法虽然有许多种,但著者惯用选煤上表示分选效率的分配曲线来表示,即与曲线上50%相对应的粒度称为分级粒度d_T,与曲线上25%及75%相对应的粒度之差的1/2称为分级精度E_T。d_T和E_T越小,分级性能就越好。
Grading performance of hydrocyclones refers to the ability of solid particles of various viscosities suspended in a slurry to be separated at a certain particle size. Grading performance is generally graded with grading, grading efficiency and grading accuracy. Although there are many kinds of ways to represent the discharge of underflow tube by grading, the author usually uses the distribution curve that represents the separation efficiency on coal preparation, that is, the particle size corresponding to 50% of the curve is called grading granularity d_T, 1/2 of the difference between the particle sizes corresponding to 25% and 75% is called the classification accuracy E_T. The smaller d_T and E_T, the better the grading performance.