Common powders in coal mine,metallurgy,rubber and other industries (copper,glass bead,coal,alumina,petroleum coke and carbon black) were selected as the research objects,the powder flowability were fully characterized by means of statics and kinetics.The functional relationship between the physical properties and the flowability parameters of the powders was obtained.The different properties of the powders such as friction,compression and kinetic properties were affected by the particle size and density differently.The correlation between different flow parameters was constructed,and the linear relationship between the angle of repose and the Hausner ratio(HR) was obtained,as well as the linear relationship between HR and compressibility index.The results of Carr's index and Jenike's flow function shown that the static characterization technique can more effectively distinguish the difference between powders with better flowability,while for adhesive powder,it was easy to obtain more comprehensive characterization through shear test.
Luo Cong, Lu Haifeng, Guo Xiaolei, Gong Xin, Cao Jiakun, Xue Lianhao, Tan Binzhe
. Study on statics and kinetics characterization of powder flowability[J]. New Chemical Materials, 2020
, 48(10)
: 186
-191
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.040
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