화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.31, No.5, 286-295, May, 2021
DOI10.3740/MRSK.2021.31.5.286  Export Citation
볼 밀의 분쇄장에서 DEM 시뮬레이션을 통한 마찰계수 영향
Effect of Friction Coefficient from DEM Simulation in Grinding Zone of the Ball Mill
자갈사이항 바트체첵1, 2, 보르 암갈란1, 오란치멕 쿨란1, 3, 이재현1, 2, 최희규2, 3, †
  • 1창원대학교 메카트로닉스 융합부품소재 연구센터(ERC)
  • 2창원대학교 대학원 신소재공학과
  • 3창원대학교 대학원 문화융합기술협동과정
Battsetseg Jargalsaikhan1, 2, Amgalan Bor1, Khulan Uranchimeg1, 3, Jehyun Lee1, 2, and Heekyu Choi2, 3, †
  • 1Engineering Research Center (ERC) for Integrated Mechatronics Materials and Components, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
  • 2Graduate School of Material Science Engineering, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
  • 3Graduate School of Convergence on Culture Technology, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
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This study attempts to find optimal conditions of the friction coefficient using a discrete element method (DEM) simulation with various friction coefficient conditions and three different grinding media with various ball sizes in a traditional ball mill (TBM). Using ball motion of the DEM simulation are obtained using the optimal friction coefficient compared with actual motion; photographs are taken by the digital camera and the snapshot images are analyzed. In the simulation, the rotation speed of the mill, the materials and velocity of the grinding media, and the friction coefficient between the balls and the wall of the pot are fixed as the actual experimental conditions. We observe the velocity according to the friction coefficient from the DEM simulation. The friction coefficient is found to increase with the velocity. Milling experiments using a traditional ball mill with the same experimental conditions as those of the DEM simulation are conducted to verify the simulated results. In addition, particle morphology change of copper powder is investigated and analyzed using scanning electron microscopy (SEM) for the milling experiment.
Keywords:a traditional ball mill;friction coefficient;DEM simulation;grinding media;velocity
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