Particle erosion behavior in viscoelastic surfactant abrasive slurry jetting

Wang, Zhiguo; Wang, Wenjuan; Ni, Jun; Sun, Xiaofeng; Guo, Jiangruo; Su, Xuantao; Luo, Xiang‐Qian

doi:10.1016/j.powtec.2023.118230

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…Various methods of slurry conditioning have been proposed, such as stirring mixing, jet mixing, and ultrasonic mixing. [11][12][13][14][15] Each method employs distinct mechanisms to facilitate the dispersion of collectors and accelerate mineral particles, ultimately promoting efficient slurry conditioning. In the method of stirring mixing, the impeller rotates to disperse the collector and accelerate the mineral particles; in such case, the particles collide with the collector droplets to achieve slurry conditioning.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement in kerosene droplet–coal particle collision and adsorption by bubble trailing vortex in coal slurry conditioning: Energy evolution of collision process

Zhu,

Qin,

Chen

et al. 2024

Asia-Pacific J Chem Eng

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Understanding the collision between kerosene droplets and coal particles in the bubble trailing vortex region is crucial for enhancing slurry conditioning. We found the area of the bubble trailing vortex region increased as the bubble size increased via the Fluent 6.3.26 software. A kerosene droplet velocity range of 0.074–0.106 m/s and a coal particle velocity range of 0.062–0.104 m/s were obtained if a bubble had a diameter of 0.3 mm. We employed a high‐speed motion acquisition system and observed the collision process, which was divided into two stages: Compression and Rebound. The critical motion distance increased as the kerosene droplet size increased, and sufficient kerosene droplet motion distance and enough kinetic energy normally resulted in a rebound phenomenon. The attenuation energy was almost positively linear to the initial energy, and the energy attenuation coefficient of the collision process was fitted to 0.626. Our results can provide valuable insight into mineral separation.

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Section: Introductionmentioning

confidence: 99%

“…Various methods of slurry conditioning have been proposed, such as stirring mixing, jet mixing, and ultrasonic mixing 11–15 . Each method employs distinct mechanisms to facilitate the dispersion of collectors and accelerate mineral particles, ultimately promoting efficient slurry conditioning.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in kerosene droplet–coal particle collision and adsorption by bubble trailing vortex in coal slurry conditioning: Energy evolution of collision process

Zhu,

Qin,

Chen

et al. 2024

Asia-Pacific J Chem Eng

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“…For example, numerous polysaccharides and proteins can combine to generate colloidal particles that can create a viscous solution [1], an elastic gel, or a liquid crystalline phase (which are frequently utilized as structuring or thickening ingredients in meals because of this). There is also particle erosion behavior in viscoelastic surfactant abrasive slurry jetting [2], where viscoelastic surfactant fluids are used due to the advantages of low friction, environmental friendliness, and microstructures recoverability after mechanical degradation. Other applications could be cited here, but the focus should be on the viscous and elastic nature of the fluids.…”

Section: Introductionmentioning

confidence: 99%

A Primer on CFD-DEM for Polymer-Filled Suspensions

2023

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This work reports on an evaluation of the computational fluid dynamics–discrete element method (CFD-DEM) numerical approach to study the behavior of polymer-filled suspensions in a parallel-plate rheometer. For this purpose, an open-source CFD-DEM solver is used to model the behavior of such suspensions considering different particle volume fractions and different types of fluid rheology. We first validate the numerical approach for the single-phase flow of the continuum phase (fluid phase) by comparing the fluid’s azimuthal velocity and shear stress components obtained from the open-source solver against the analytical expressions given in cylindrical coordinates. In addition, we compare the numerical torque given by the numerical procedure with analytical expressions obtained for Newtonian and power law fluids. For both cases, there is a remarkable agreement between the numerical and analytical results. Subsequently, we investigated the effects of the particle volume fraction on the rheology of the suspension. The numerical results agree well with the experimentally measured ones and show a yield stress phenomenon with the increase of the particle volume fraction.

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