{"title":"Performance analysis of vertical stirred mill based on multi-coupling method","authors":"","doi":"10.1016/j.apt.2024.104603","DOIUrl":null,"url":null,"abstract":"<div><p>To improve vertical mill performance, a vertical stirred mill is used as the research object. Firstly, an electromechanical multi-body dynamic model (EMBD) of the vertical stirred mill is established, followed by the establishment of a discrete element method (DEM) analysis model of the grinding media, and then the DEM-EMBD coupling model is formed. The feasibility of the DEM-EMBD coupling model is verified through experiments. On this basis, the stress distribution state of the helical agitator is analysed based on the coupling method of the discrete element method and finite element method (DEM-EMBD-FEM). The DEM-EMBD coupling model can better reflect the dynamic characteristics of the vertical stirred mill by comparing it with the DEM model and the coupling method of discrete element method and computational fluid dynamics (DEM-CFD) respectively. Finally, the effects of vertical stirred mill structural parameters, operating parameters and grinding media size on mill performance are investigated by the DEM-EMBD and DEM-EMBD-FEM coupling models. The approach then provides insights into the structural design of vertical stirred mills, motor selection, and the welding process between the helical blades and screw.</p></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124002796","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
To improve vertical mill performance, a vertical stirred mill is used as the research object. Firstly, an electromechanical multi-body dynamic model (EMBD) of the vertical stirred mill is established, followed by the establishment of a discrete element method (DEM) analysis model of the grinding media, and then the DEM-EMBD coupling model is formed. The feasibility of the DEM-EMBD coupling model is verified through experiments. On this basis, the stress distribution state of the helical agitator is analysed based on the coupling method of the discrete element method and finite element method (DEM-EMBD-FEM). The DEM-EMBD coupling model can better reflect the dynamic characteristics of the vertical stirred mill by comparing it with the DEM model and the coupling method of discrete element method and computational fluid dynamics (DEM-CFD) respectively. Finally, the effects of vertical stirred mill structural parameters, operating parameters and grinding media size on mill performance are investigated by the DEM-EMBD and DEM-EMBD-FEM coupling models. The approach then provides insights into the structural design of vertical stirred mills, motor selection, and the welding process between the helical blades and screw.
期刊介绍:
The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide.
The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them.
Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)