Influence of the "Left Span" on flow and fluidization characteristics of cohesive powders

被引：2
作者：
Wang, Jiaying [1 ,2 ]
Shao, Yuanyuan [3 ]
Zhu, Jesse [2 ,3 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 3K7, Canada
[3] Univ Nottingham Ningbo China, Nottingham Ningbo China Beacons Excellence Res & I, 211 Xingguang Rd, Ningbo 315100, Peoples R China
来源：
POWDER TECHNOLOGY | 2024年 / 439卷
关键词：
Particle size distribution; Left span; Flowability; Fluidizability; Cohesive powders; PARTICLE-SIZE DISTRIBUTION; FINE POWDERS; INTERPARTICLE FORCES; C POWDERS; GAS; BEHAVIOR; BEDS; PERFORMANCE; VOIDAGE; PHASE;
D O I：
10.1016/j.powtec.2024.119706
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The particle size distribution (PSD) significantly influences the flow and fluidization behaviors of powders, with the left section of PSD, indicating the portion of smaller particles, exerting dominant effects. Limited research has focused on exploring the impact of the left section of PSD on powder characteristics. Therefore, three types of Group C cohesive powders with the same diameter (20 mu m) but different PSDs are derived from the same material. Results demonstrate that more abundant superfine components lead to diminished flow and fluidization quality. Finer particles exhibit greater potential for retaining gas within the bed, while realizing this potential requires specific auxiliary techniques (nanoparticle modulation), to reduce powder cohesiveness. A new parameter, termed "Left Span", is proposed to depict the left portion of PSD. Sensitivity analysis reveals that flow and fluidization properties are more responsive to "Left Span" compared to span, which encompasses both the left and right sections of PSD.
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页数：13
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