Flowability Measurement of Coarse Particles Using Vibrating Tube Method

Ishii, Katsunori; Suzuki, Masahiro; Yamamoto, T.; Kihara, Yoshiyuki; Kato, Yoshiyuki; Kurita, Tsutomu; Yoshimoto, Katsunobu; Yasuda, Masatoshi; Matsusaka, Shuji

doi:10.1252/jcej.08we250

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…If the data on powder flowability are poor, problems may arise during the processes [1,2]. Much effort has been made to theoretically estimate powder flowability; however, the estimation is very difficult because there are too many factors, such as particle size, shape, density, temperature and humidity [3][4][5]. In addition, adhesion and agglomeration properties, or compressibility, which are related to various surface forces, static and dynamic friction, and gravity, make the analysis more complex [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Development of vibration shear tube method for powder flowability evaluation

Zainuddin¹,

Yasuda²,

Liu

et al. 2012

Powder Technology

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A new method for evaluating powder flowability, named vibration shear tube method has been developed. In this measurement system, the powder was discharged through a narrow gap between a vibrating tube edge and a flat bottom surface, where the particles experienced high shear forces to overcome the adhesion and friction forces. The vibration amplitude was increased during the measurement, and the mass of particles discharged was measured at constant time intervals. The amount of powder used for the measurement was about 10-40 g. The measurement time was 100-400 s. A series of experiments was carried out using alumina particles of 2-60 μm in mass median diameters. Flowability profiles, i.e. the relationships between the mass flow rate and the vibration acceleration were obtained experimentally. To characterize powder flowability, critical vibration acceleration and characteristic mass flow rate were proposed. The values of these factors were analyzed in detail and the performance of this measurement system was evaluated.

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Section: Introductionmentioning

confidence: 99%

Development of vibration shear tube method for powder flowability evaluation

Zainuddin¹,

Yasuda²,

Liu

et al. 2012

Powder Technology

Self Cite

View full text Add to dashboard Cite

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“…Some of them are difficult to carry out, and are not suitable in terms of stress state. To counter these problems, a ring shear tester [13], an avalanche method [14], a vibratory feeder method [15], a vibrating capillary method [16][17][18][19][20], a twisted blade method [21], and an indentation method [22] were proposed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Powder Flowability Using Vibration Shear Tube Method

Zainuddin¹,

Yasuda

Horio

et al. 2012

Part & Part Syst Charact

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The flowability of powders with different mass median diameters ranging from micrometers to nanometers was measured using the vibration shear tube method. In the measurement system used in this study, the powder was discharged through a narrow gap between a vibrating tube edge and a flat bottom surface, where each particle could experience high shear forces to overcome the adhesion and friction forces. The vibration amplitude was increased during the measurement, and the mass of particles discharged was measured at constant time intervals.From the relationship between the mass flow rate and the vibration acceleration, static and dynamic properties of the powders were evaluated using the critical vibration acceleration, characteristic mass flow rate, and gradient of mass flow rate. The correlation between the static and dynamic properties was studied in detail.

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