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A combination of density-based clustering method and DEM to numerically investigate the breakage of bonded pharmaceutical granules in the ball milling process

引用

Particuology 2021年第5期19卷 153-168页

作者： Alexander Krok peter peciar Kieran Coffey Keith Bryan Sandra Lenihan Department of Process Energy and Transport EngineeringMunster Technological UniversityBishopstownCork T12 P928Ireland Department of Mechanical Biomedical and Manufacturing EngineeringMunster Technological UniversityBishopstownCork T12 P928Ireland Pfizer Newbridge LittleconnellNewbridgeCo.Kildare W12 HX57Ireland Institute of Process Engineering Faculty of Mechanical EngineeringSlovak University of TechnologyNam.Slobody 1781231 BratislavaSlovakia

Ball milling is widely used in industry to mill particulate *** primary purpose of this process is to attain an appropriate product size with the least possible energy *** process is also extensively utilised in pharmaceuticals for the comminution of the excipients or ***,for ball mill,little is known concerning the mechanism of size *** prediction approaches are not deemed useful to provide significant insights into the operation or facilitate radical step changes in ***,the discrete element method(DEM)as a computational modelling approach has been used in this *** previous research,DEM has been applied to simulate breaking behaviour through the impact energy of all ball collisions as the driving force for ***,the nature of pharmaceutical material fragmentation during ball milling is more *** functional equations which link broken media and applied energy do not consider the collision of particulate media of different shapes or collisions of particulate media(such as granules)with balls and rotating mill *** could have a significant impact on ***,this paper aimed to investigate the fragmentation of bounded particles into DEM granules of different shape/size during the ball milling process.A systematic study was undertaken to explore the effect of milling speed on breakage ***,in this study,a combination of a density-based clustering method and discrete element method was employed to numerically investigate the number and size of the fragments generated during the ball milling process over *** was discovered that the collisions of the ball increased proportionally with rotation speed until reaching the critical rotation ***,results illustrate that with an increase of rotation speed,the mill power increased *** caratacting motion of mill material together with balls was identified as the most

关键词： Ball milling Granular pharmaceutical lactose Density-based clustering Discrete element method Breakage Mill rotation speed ABAQUS

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