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To investigate the motion characteristics and the law of identical property for particles obtained under segregation to uniform distribution conditions in forced agitation mixing, the mixing process of the same sized ellipsoidal particles at different rotating speeds in a U-tank is simulated using three-dimensional discrete element method. Macroscopic mixing law and partial mixing characteristics in particle mixing process are analysed in the view of single particle random motion trajectory and motion vector diagram of macroscopic particle flow. And the mathematical relation between mixability and revolutions of agitating blades is described quantitatively. Results show that convective mixing and four partial mixing characteristics control the mixing homogeneity process of identical property of segregation particles in forced agitation mixing. Mixability of segregation particles is independent of rotating speed of the agitating shaft, but has a direct correlation with revolutions. The relation between mixability and revolutions agrees with the exponential growth model. Research results can provide the basis and reference for equipment improvement and operating control of bulk material in the industry of the augmenting of mix.
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Keywords:
- ellipsoid particles /
- mixing characteristics /
- three-dimensional discrete element /
- numerical simulation
[1] Chan K W, Kwan A K H 2014 particuology 16 108
[2] Ouyang H W, Huang S C, Liu Z M, Wang Q 2009 Rare Met. Mater. Eng. 38 1310 (in Chinese) [欧阳鸿武, 黄誓成, 刘卓民, 王琼 2009 稀有金属材料与工程 38 1310]
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[8] Demagh Y, Moussa H B, Lachi M, Noui S, Bordja L 2012 Powder Technol. 224 260
[9] Conway S L, Lekhal A, Khinast J G, Glasser B J 2005 Chem. Eng. Sci. 60 7091
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[14] Hou Q F, Dong K J, Yu A B 2014 Powder Technol. 256 529
[15] Chandratilleke C R, Yu A B, Bridgwater J 2012 Chem. Eng. Sci. 79 54
[16] Ren B, Shao Y J, Zhong WQ, Jin B S, Yuan Z L, Lu Yong 2012 Powder Technol. 222 85
[17] Wu D P, Li X X, Qin Q, Guan B, Zang Y 2014 Acta Phys. Sin. 63 098201 (in Chinese) [吴迪平, 李星祥, 秦勤, 管奔, 臧勇 2014 63 098201]
[18] Han Y L, Jia F G, Tang Y R, Liu Y, Zhang Q 2014 Acta Phys. Sin. 63 174501 (in Chinese) [韩燕龙, 贾富国, 唐玉荣, 刘扬, 张强 2014 63 174501]
[19] Hu G M 2010 Analysis and Simulation of Granular System by Discrete Element Method Using EDEM (Wuhan:Wuhan University of Technology Press) p301 (in Chinese) [胡国明 2010 颗粒系统的离散元素法分析仿真(武汉:武汉理工大学出版社) 第301页]
[20] Wang R F, Li Z Y, Dou R B, Guo J Z 2013 Trans. CSAM. 44 93 (in Chinese) [王瑞芳, 李占勇, 窦如彪, 郭建忠 2013 农业机械学报 44 93]
[21] Mellmann J, 2001 Powder Technol. 118 251
[22] McCarthy J J, Khakhar D V, Ottino J M 2000 Powder Technol. 109 72
[23] Cisar S E, Ottno J M 2007 AIChE J. 53 1151
[24] Sudah O S, Coffin-Beach D, Muzzio F J 2002 Powder Technol. 126 191
[25] Zhou Y C, Yu A B, Bridgwater J 2003 J. Chem. Technol. Biotechnol. 78 187
[26] Gao H L, Chen Y C, Zhao Y Z, Zheng J Y 2011 Acta Phys. Sin. 60 124501 (in Chinese) [高红利, 陈友川, 赵永志, 郑津洋 2011 60 124501]
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[1] Chan K W, Kwan A K H 2014 particuology 16 108
[2] Ouyang H W, Huang S C, Liu Z M, Wang Q 2009 Rare Met. Mater. Eng. 38 1310 (in Chinese) [欧阳鸿武, 黄誓成, 刘卓民, 王琼 2009 稀有金属材料与工程 38 1310]
[3] Khalilitehrani M, Abrahamsson P J, Rasmuson A 2014 Powder Technol. 263 45
[4] Abdul Q, Shi Q F, Liang X W, Sun G 2010 Chin. Phys. B 19 034601
[5] Cleary P W, 2013 Powder Technol. 248 1035
[6] Radl S, Brandl D, Heimburg H, Glasser B J, Khinast J G 2012 Powder Technol. 226 199
[7] ZhaoL L 2010 Ph. D. Dissertation (Xuzhou:China University of Mining And Technology) (in Chinese) [赵啦啦 2010 博士学位论文(徐州:中国矿业大学)]
[8] Demagh Y, Moussa H B, Lachi M, Noui S, Bordja L 2012 Powder Technol. 224 260
[9] Conway S L, Lekhal A, Khinast J G, Glasser B J 2005 Chem. Eng. Sci. 60 7091
[10] Lemieux M, Bertrand F, Chaouki J, Gosselin P 2007 Chem. Eng. Sci. 62 1783
[11] Kwapinska M, Saage G, Tsotsas E 2006 Powder Technol. 161 69
[12] Dubey A, Hsia H, Saranteas K, Brone D, Misra T, Muzzio F J 2011 Chem. Eng. Sci. 66 5107
[13] Grajales L M, Xavier N M, Henrique J P, Thomeo J C 2012 Powder Technol. 222 167
[14] Hou Q F, Dong K J, Yu A B 2014 Powder Technol. 256 529
[15] Chandratilleke C R, Yu A B, Bridgwater J 2012 Chem. Eng. Sci. 79 54
[16] Ren B, Shao Y J, Zhong WQ, Jin B S, Yuan Z L, Lu Yong 2012 Powder Technol. 222 85
[17] Wu D P, Li X X, Qin Q, Guan B, Zang Y 2014 Acta Phys. Sin. 63 098201 (in Chinese) [吴迪平, 李星祥, 秦勤, 管奔, 臧勇 2014 63 098201]
[18] Han Y L, Jia F G, Tang Y R, Liu Y, Zhang Q 2014 Acta Phys. Sin. 63 174501 (in Chinese) [韩燕龙, 贾富国, 唐玉荣, 刘扬, 张强 2014 63 174501]
[19] Hu G M 2010 Analysis and Simulation of Granular System by Discrete Element Method Using EDEM (Wuhan:Wuhan University of Technology Press) p301 (in Chinese) [胡国明 2010 颗粒系统的离散元素法分析仿真(武汉:武汉理工大学出版社) 第301页]
[20] Wang R F, Li Z Y, Dou R B, Guo J Z 2013 Trans. CSAM. 44 93 (in Chinese) [王瑞芳, 李占勇, 窦如彪, 郭建忠 2013 农业机械学报 44 93]
[21] Mellmann J, 2001 Powder Technol. 118 251
[22] McCarthy J J, Khakhar D V, Ottino J M 2000 Powder Technol. 109 72
[23] Cisar S E, Ottno J M 2007 AIChE J. 53 1151
[24] Sudah O S, Coffin-Beach D, Muzzio F J 2002 Powder Technol. 126 191
[25] Zhou Y C, Yu A B, Bridgwater J 2003 J. Chem. Technol. Biotechnol. 78 187
[26] Gao H L, Chen Y C, Zhao Y Z, Zheng J Y 2011 Acta Phys. Sin. 60 124501 (in Chinese) [高红利, 陈友川, 赵永志, 郑津洋 2011 60 124501]
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