The paper introduces a mathematical model based on the discrete element method, presenting the results of its application to simulate the movement of briquetted mass within the working chamber of the extruder. This model accounts for the adhesive interaction among particles within the mixture. The simulation results provide a qualitative and quantitative description of the displacement and compaction of the briquetted mass. They allow the flow structure to be visualized and the distribution of velocities and the moment on the screw axis during the extrusion process to be determined. Furthermore, a digital twin of the pug sealer–extruder unit was created through finite element modeling. The results obtained from this digital twin can be used to optimize the operational parameters of extrusion briquette equipment. In addition, by using the developed model, the process of mixing binder materials with a briquetted mixture at various volumes of the added binder was studied.

本文介绍了一种基于离散元方法的数学模型，展示了应用其模拟压块团块在挤压机工作室内的运动的结果。该模型解释了混合物内颗粒之间的粘附相互作用。模拟结果提供了压块体的位移和压实的定性和定量描述。它们可以使流动结构可视化，并确定挤出过程中螺杆轴上的速度和力矩的分布。此外，通过有限元建模创建了 pug 密封机-挤出机单元的数字孪生。从该数字孪生获得的结果可用于优化挤压煤球设备的操作参数。此外，通过使用开发的模型，研究了以不同体积添加的粘合剂将粘合剂材料与压块混合物混合的过程。