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2.3.4. Carr’s Index (CI) and Hausner Ratio (HR)

WZ Wei-Feng Zhu
LZ Lin Zhu
ZL Zhe Li
WW Wen-Ting Wu
YG Yong-Mei Guan
LC Li-Hua Chen
ZM Zhi-Xuan Mao
LM Liang-Shan Ming
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The bulk density (ρb) and tapped density (ρt) were determined by a powder characteristics tester (BT-1000, Bettersize Instruments, Ltd., Shanghai, China). The measuring cylinder was exactly 100 mL. The tapped time was 6 min for each material. The CI and HR were calculated with the following equations:

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