基于FLUENT-EDEM耦合的离心选矿机搅拌器仿真分析

Simulation Analysis of Stirrer in Centrifugal Concentrator Based on FLUENT-EDEM Coupling

采用FLUENT-EDEM耦合进行了离心选矿机搅拌器工艺参数对搅拌器搅拌性能的影响的数值模拟研究,分析了搅拌器内矿物颗粒群的运动规律、分布特性等,以矿物颗粒分散程度为主要评价指标,设计了单因素四水平仿真实验。仿真实验结果显示,搅拌转速为120rpm,叶片数量为3,搅拌直径为0.15m,插入深度为0.2m时搅拌器对矿浆的搅拌效果较好,矿浆浓度均匀,有利于离心选矿机的分选效率。该研究为指导新型离心选矿机搅拌器的设计及实际生产提供了坚实的理论和技术基础。

Using the FLUENT-EDEM coupling, the numerical simulation research about the influence of process parameters of stirrer of centrifugal concentrator on mixing performance of stirrer was conducted. The motion low and distribution characteristic of particles in stirrer were analyzed and the single-factor and five-level test were conducted with the dispersion of particles being the main evaluation index. The simulation results showed that, the optimal stirring effect could be obtained under the conditions as follows, mixing speed of 120 rpm,leaf number of 3, diameter of 0.15 m and inserted depth of 0.2 m. The study provided a solid theoretical foundation and technical support for designing and producing new stirrer.