Authors

Abstract

The calibration of the powder simulation parameters could improve the accuracy of the pelletizing and coating simulation process. In this paper, we take coated powder (after this referred to as powder) as the research object, based on particle amplification theory, combined with physical tests to calibrate the contact parameters of powder and seeds (after this referred to as seeds), conduct the angle of repose simulation tests of powder, carry out Plackett-Burman test, steepest climb test, and Box-Behnken test in turn, and establish quadratic regression equation to obtain the best combination of powder simulation parameters. The difference between the contact parameter combinations obtained from the simulation tests and the physical test results is less than 1%, providing some reference for calibrating similar powder material parameters.

Abstract in Chinese

为对粉料仿真参数进行标定，可提高丸化包衣仿真过程的准确性。本文以包衣粉料（以下简称粉料）作为研究对象，基于颗粒放大理论，结合物理试验标定紫花苜蓿种子（以下简称种子）与粉料间的接触参数；进行粉料休止角仿真试验，依次开展Plackett-Burman试验、最陡爬坡试验与Box-Behnken试验，建立二次回归方程，得到粉料最佳仿真参数组合。仿真试验得到接触参数组合与物理试验结果相差均小于1%，为相似粉体物料参数标定提供一定参考。