Simulation of straw granulating process and optimization of ring die structure parameters
LIU Long
GAO Aimin
CHENG Zhixin
LIU Fengjun
WANG Hongsong
REN Wei
WANG Changde
Abstract：In order to improve granulating efficiency,the intrinsic parameters of straw were measured and the granulating process was simulated by using discrete element software EDEM and finite element software ANSYS.The changes of external force number with time,as well as the changes of particle contact number with time were studied.The influence of die hole aperture,die hole cone angle and powder particle size on the granulating effects were analyzed and the structural parameters of ring die were optimized.The results show that simulated granulation process is basically the same as the actual granulation process.The particle velocity and external force show a periodic fluctuation state.The particle contact number has a periodic and gradually decreasing trend.The straw granulating process is a periodic cyclic extrusion process.When the die hole aperture is 5 mm,the die hole cone angle is 75° and the powder particle size is 0.6 mm,the wear deformation of ring die surface is slight and the granulation quality and efficiency are the best.
Keywords：strawgranulating processring die structureparameter optimizationsimulation
Publication Date：2023-02-25
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 90-97 )