The investigation of particle flow mechanisms of bulk materials in dustiness testers

Wangchai, Sathaphon; Hastie, David B; Wypych, Peter W

doi:10.1080/02726351.2015.1069430

Cited by 14 publications

(12 citation statements)

References 28 publications

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“…By using the combination of particle sizes detailed in Table 2, the percentage of each sized particle in each of the five bins (refer Figure 1) were determined via post-processing. This analysis was performed for the entire simulation to graph the movement of polyethylene pellets throughout the rotating drums, based on the initial loading condition where the material was evenly spread along the drum, as this arrangement has shown to reach steady-state in the least amount of time (Wangchai et al, 2015).…”

Section: Simulation Resultsmentioning

confidence: 99%

“…This section presents some representative results of previously completed experimental investigations (Wangchai et al, 2015).…”

Section: Experimental Dustiness Testingmentioning

confidence: 99%

“…The product size distribution was determined by mechanical sieving, resulting in 82% of particles in the 4.0 -5.6mm range, 16% in the 3.35 -4.0mm range and 2% in the 2.36 -3.35mm range. In previous published work, (Wangchai et al, 2015), the lower 18% of the size distribution was discarded and a 'mono-sized' DEM investigation was completed using an averaged particle size in the 4.0 -5.6mm range. The larger particle size would also allow for DEM simulations to be completed quicker.…”

Section: Test Materialsmentioning

confidence: 99%

“…The particle shape used in the DEM simulations is based on the measurement of a random selection of particles (Wangchai et al, 2013). Wangchai et al (2015) based their previous observations on the assumption the polyethylene pellets were mono-sized.…”

Section: Dem Particle Shape Generationmentioning

confidence: 99%

“…Wangchai et al (2015) based their previous observations on the assumption the polyethylene pellets were mono-sized. This investigation attempts to provide an insight into the effect of particle size on the motion of particles within the rotating drums and also to observe any segregation that results from the variation in particle size.…”

Section: Dem Particle Shape Generationmentioning

confidence: 99%

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Particle size segregation of bulk material in dustiness testers via DEM simulation

Wangchai

Hastie

Wypych

2016

Particulate Science and Technology

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Dustiness testers are used to quantify the level of dust within a bulk material. The generation of dust can occur as a result of many bulk material handling activities, including filling or discharge from storage bins, during free-fall, material impact on conveyor transfers, or impact with other materials. Dust generation can have a serious impact to the environment as well as workers and nearby communities. This paper presents the findings of a discrete element modeling (DEM) study of the flow behavior of a range of binary granular mixes tested in the European Standard and the Australian Standard dustiness testers. Due to current computing limitations, a nondusty material has been chosen for these simulations to determine the underlying characteristics of particle migration within the rotating drums. A range of simulations have been performed using different starting positions of the simulated test product within the rotating drums to determine if this has any overall effect on the particle interactions. Additionally, simulated binary mixtures containing varied size ratios of the same product have been used in an attempt to uncover possible trends, especially in terms of axial and radial segregation. AbstractDustiness testers are used to quantify the level of dust within a bulk material. The generation of dust can occur as a result of many bulk materials handling activities, including; filling or discharge from storage bins, during free-fall, material impact on conveyor transfers or impact with other materials. Dust generation can have a serious impact to the environment as well as workers and nearby communities.This paper presents the findings of a discrete element modelling study of the flow behaviour of a range of binary granular mixes tested in the European Standard and the Australian Standard dustiness testers. Due to current computing limitations, a non-dusty material has been chosen for these simulations to determine the underlying characteristics of particle migration within the rotating drums. A range of simulations have been performed using different starting positions of the simulated test product within the rotating drums to determine if this has any overall effect on the particle interactions. Additionally, simulated binary mixtures containing varied size ratios of the same product have been used in an attempt to uncover possible trends, especially in terms of axial and radial segregation.

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Section: Simulation Resultsmentioning

confidence: 99%

“…This section presents some representative results of previously completed experimental investigations (Wangchai et al, 2015).…”

Section: Experimental Dustiness Testingmentioning

confidence: 99%

Section: Test Materialsmentioning

confidence: 99%

Section: Dem Particle Shape Generationmentioning

confidence: 99%

Section: Dem Particle Shape Generationmentioning

confidence: 99%