Collision Energy Analysis within the Vertical Shaft Impact Crusher Based on the Computational Fluid Dynamics-Discrete Element Method

Wu, Canhui; Zhao, Limei; Cao, Zhen

doi:10.1021/acsomega.3c08017

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…The gravitational acceleration was established at 9.8 m/s 2 , the particles’ initial velocity was 0.5 m/s, and they were discharged from a distance of 120 mm from the rotor’s center. Table presents the particle and contact parameters of the limestone particles as well as the tester …”

Section: Simulation Modelingmentioning

confidence: 99%

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The Crushing Distribution Morphology of a Single Particle Subjected to Rotary Impact

Wu,

Zhao,

Cao

2024

ACS Omega

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In a vertical shaft impact crusher, the particle crushing process is extraordinarily complex, and the particle shape significantly influences the size distribution of the crushed product. To quantify the crushing behavior of particles more accurately and thus reveal the crushing mechanism of the crusher, an analytical approach is suggested for characterizing the crushing distribution of particles subjected to rotational impact. First, according to the working principle of vertical shaft impact crusher, a rotary impact tester was designed, and the cumulative damage model of particles under repetitive impact was established based on the theory of fracture mechanics, based on which the simulation model of single-particle rotary impact tester was constructed. Then, seven distinct particle shapes were established based on the particle shapes observed during the crusher's actual production. Finally, an investigation was conducted using the simulation model to examine the impact of various rotor velocities and particle shapes on the macroscopic mechanical properties and crushing distribution attributes of single-particle crushing. In the single-particle rotary impact crushing experiments, the findings indicated that the particle crushing transpired at the site of contact with the anvil. The particle size distribution of subparticles generated through the crushing with distinct particle shapes all exhibit single-peak characteristics as rotor speed increases. The magnitude of the peak value progressively escalates in tandem with the rotor speed increase. Furthermore, as the rotor speed increases, so do the cumulative mass distribution and the maximum continuous crushing cumulative mass. When the horizontal aspect ratio of the particles is V < 1 and V > 1, the crushing effect of the particles is poor at the same rotational speed; the curve of the maximum continuous crushing degree has an inverted "V″ shape. The crushing effect of the particles improves as their edges become progressively sharper, and the maximum continuous crushing degree of the particles increases as the edge sharpness of the particles advances.

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Section: Simulation Modelingmentioning

confidence: 99%

“…Table 2 presents the particle and contact parameters of the limestone particles as well as the tester. 40 …”

Section: Simulation Modelingmentioning

confidence: 99%

The Crushing Distribution Morphology of a Single Particle Subjected to Rotary Impact

Wu,

Zhao,

Cao

2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

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Research on hammering characteristics of hammer mill based on discrete element method

Li,

Shi,

Zhang

2024

Eng. Res. Express

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In hammer mill crushing, the speed change of the rotor hammer head will have an effect on the efficiency of crushing and so on. This paper takes the hammer mill rotor as the research object and carries out a simulation study, establishes the material particle crushing model and verifies the validity of the model. Discrete element method (DEM) is used to simulate the movement of the material inside the hammer mill after crushing, revealing that the working principle of the hammer mill is based on the form of particle movement, and to study the law of the particle collision fracture bond energy, compressive stress and particle collision impact energy of the hammer mill.Through comparison, the final working condition of the hammer mill is that at the rotor speed of 1600 r/min, the working efficiency of the whole equipment is the highest.

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Collision Energy Analysis within the Vertical Shaft Impact Crusher Based on the Computational Fluid Dynamics-Discrete Element Method

Cited by 2 publications

References 30 publications

The Crushing Distribution Morphology of a Single Particle Subjected to Rotary Impact

The Crushing Distribution Morphology of a Single Particle Subjected to Rotary Impact

Research on hammering characteristics of hammer mill based on discrete element method

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