Effect of bend angle on granular size segregation in the chute flow under periodic flow inversion

Mantravadi, Bhargav; Tan, Danielle

doi:10.1016/j.powtec.2019.10.005

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Segregation is regarded as the opposite of mixing, which results in the partial or total separation of well-mixed particle components. Segregation often occurs in the processing of particulate materials due to their different properties. − Although segregation is important in the beneficiation industry, it is usually undesirable or even problematic because the product is usually required to maintain a certain mixing uniformity. For example, in the iron-making industry, segregation leads to uneven distribution of particle mixture, which further affects the permeability of the bed and greatly reduces the reaction efficiency and heat transfer efficiency.…”

Section: Introductionmentioning

confidence: 99%

Local Percolation of a Binary Particle Mixture in a Rectangular Hopper with Inclined Bottom during Discharging

et al. 2020

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To reveal the local percolation characteristics of a binary particle mixture in a rectangular hopper with inclined bottom, the discrete element method (DEM) is used to simulate the discharging process. A local percolation evaluation method is proposed, and the percolation strength grid maps are drawn. The effects of geometric parameters, particle properties, and interaction parameters on percolation are investigated. Apart from the free surface, percolation is mainly concentrated near the wall and at the bottom. With the increase in the orifice width, the average local percolation strength index (ALPSI) of the near-wall region increases and that of the bottom region decreases. The effect of the angle on percolation in the near-wall region can be ignored. The effect of friction on local percolation is significant. Increasing the fine particle mass fraction and reducing the difference in particle size can effectively avoid percolation.

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Section: Introductionmentioning

confidence: 99%

Local Percolation of a Binary Particle Mixture in a Rectangular Hopper with Inclined Bottom during Discharging

et al. 2020

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“…Fig.15The periodic flow inversion with a bend angle of θ. Reproduced with permission from Ref (Mantravadi and Tan, 2020)…”

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confidence: 99%

DEM Modelling of Segregation in Granular Materials: A Review

Hadi,

Roeplal,

Pang

et al. 2024

KONA

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Segregation control is a challenging yet crucial aspect of bulk material handling processes. The discrete element method (DEM) can offer useful insights into segregation phenomena, provided that reliable models are developed. The main challenge in this regard is finding a good balance between including particle-level details and managing the computational load. This is especially true for industrial applications, where multi-component flows consisting of particles with various irregular shapes and wide size distributions are encountered in huge amounts. In this work, we review the state of the art in DEM modelling of segregation in industrial applications involving the gravity-driven flow of dry, cohesionless granular materials. We start by introducing a novel scientific notation to distinguish between different types of mixtures. Next, we review how parameters for mixture models are determined in the current literature, and how segregation is affected by material, geometric and operational parameters based on these models. Finally, we review existing segregation indices and their applicability to multi-component segregation. We conclude that systematic calibration procedures for segregation models are currently missing in the literature, and realistic models representing multicomponent mixtures have not yet been developed. Filling these gaps will pave the way for optimising industrial processes dealing with segregation.

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Experimental study of the dynamic behavior and segregation of density-bidisperse granular sliding masses at the laboratory scale

2021

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Effect of bend angle on granular size segregation in the chute flow under periodic flow inversion

Cited by 4 publications

References 27 publications

Local Percolation of a Binary Particle Mixture in a Rectangular Hopper with Inclined Bottom during Discharging

Local Percolation of a Binary Particle Mixture in a Rectangular Hopper with Inclined Bottom during Discharging

DEM Modelling of Segregation in Granular Materials: A Review

Experimental study of the dynamic behavior and segregation of density-bidisperse granular sliding masses at the laboratory scale

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