搅拌磨DEM-CFD耦合仿真研究及搅拌器强度分析

发布时间：2018-05-22 17:57

本文选题：搅拌磨 + DEM-CFD　；参考：《浙江工业大学》2016年硕士论文

【摘要】：随着矿业、水泥等行业的发展,高效、节能、超细粉碎设备需求旺盛。立式螺旋搅拌磨机保有量持续增加,研发具有自主知识产权的大型立式螺旋搅拌磨机迫在眉睫。本文基于某企业大型立式螺旋搅拌磨机的开发,进行了如下研究工作。(1)在螺旋式搅拌磨机试验台,进行了无矿浆磨机的试验,建立了磨机离散元模型并进行模拟仿真。试验与仿真结果表明,磨机离散元模型模拟与实际运行吻合;分析了螺旋式搅拌器磨机、棒式搅拌磨机性能上的差异性,螺旋式搅拌磨机的磨矿效率优于棒式搅拌磨机。(2)在螺旋式搅拌磨机试验台,进行了有矿浆磨机的试验,建立了磨机计算流体动力学—离散元耦合模型。试验与仿真分析了研磨效果、螺旋搅拌器阻力矩变化规律,对大型立磨机的设计具有指导意义。(3)采用离散元方法,建立了320t磨机离散元模型,进行了性能分析,得出了螺旋搅拌器运行的阻力矩;建立了螺旋搅拌器有限元模型,施加螺旋搅拌器阻力,进行了螺旋搅拌器结构强度分析,为磨机设计与制造提供了依据;对搅拌器启动时间、磨机介质尺寸等因素。对搅拌器结构强度的影响进行了分析,为磨机减速器选型、介质选择提供了依据。研究工作通过了企业专家的验收,为大型磨机开发提供了理论依据,大型磨机得以按计划制造、出口、安装使用,大型磨机结构强度实际测量与本文研究基本吻合。
[Abstract]:With the development of mining, cement and other industries, high efficiency, energy saving, superfine grinding equipment demand is exuberant. The maintenance of vertical spiral stirred mill is increasing continuously. It is imminent to develop a large vertical spiral stirred mill with independent intellectual property. Based on the development of a large vertical spiral stirred mill, the following research work has been carried out. (1) In the test rig of spiral stirrer mill, the test of no pulp mill was carried out, the discrete element model of mill was established and simulated. The experimental and simulation results showed that the simulation of the discrete element model of the mill coincided with the actual operation, and the difference of the performance of the spiral stirrer mill, the rod type stirrer mill and the grinding mill's grinding mill were analyzed. The ore efficiency is better than that of the rod mill. (2) the test of the pulp mill was carried out in the test bench of the spiral stirrer mill, and the computational fluid dynamics - discrete element coupling model of the mill was established. The experiment and simulation analysis of the grinding effect and the change law of the resistance moment of the spiral agitator were of guiding significance to the design of the large vertical mill. (3) the use of the separation was used. The discrete element method, the discrete element model of the 320t mill is established, the performance analysis is carried out, the resistance moment of the spiral agitator is obtained, the finite element model of the spiral agitator is established, the resistance of the spiral agitator is applied, the structural strength of the spiral agitator is analyzed, which provides the basis for the design and manufacture of the mill, and the starting time of the agitator and the grinding machine The influence of the structure strength of the agitator is analyzed, which provides the basis for the selection of the mill reducer and the selection of the medium. The research work has passed the acceptance of the enterprise experts, and provides the theoretical basis for the development of the large mill. The large mill can be manufactured according to the plan, the outlet, the installation and use, and the actual measurement of the structure strength of the large mill. It is basically consistent with the research in this paper.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD453

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