在实验的基础上分别建立了分级器半径、鼓风量及引风量三者与干燥产品粒度和湿度的函数表达式，并采用复合形法对方程进行了优化，结果对干燥过程的操作具有一定指导作用 On the basis of the experiment, the function expressions of the classifier radius, the blast volume and the induced draft and the particle size and humidity of the dried product are respectively established. The complex equation is used to optimize the equation. The result is helpful to the operation of the drying process effect