Optimization of Aggregate Production Circuit through Modeling of Crusher Operation

Gawenda, T.; Saramak, D.

doi:10.3390/min12010078

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…Furthermore, experimental methods make it difficult to observe the crushing process of individual particles due to equipment limitations . Hence, to surmount the constraints of empirical investigation and gain a more comprehensive understanding of the evolution mechanism and overall mechanical characteristics of the particle crushing process. − The study used the discrete element method to investigate the crushing characteristics of particles which can discretize the complete particle crushing process, enabling a frame-by-frame analysis of the particle crushing procedure. , …”

Section: Introductionmentioning

confidence: 99%

“…21−23 The study used the discrete element method to investigate the crushing characteristics of particles which can discretize the complete particle crushing process, enabling a frame-by-frame analysis of the particle crushing procedure. 24,25 In addition, in terms of DEM simulation of single particle impact crushing, Ueda et al studied the disintegration damage of spherical and ellipsoidal particles using DEM. The results indicated that only slender particles can undergo bending fracture.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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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“…The feed parameters (grain size, mass, moisture, rock mechanical properties), the method of filling the crusher, the shape of the working parts, the speed of movement, grate gaps and other parameters all influence the output material. In the case of simple crushers, with jaw or cone, where the gap size and the working frequency can be changed, several mathematical models allow estimations of the efficiency and grain size of the crushed product [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Industry Scale Optimization: Hammer Crusher and DEM Simulations

Doroszuk

Król

2022

Minerals

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The paper shows the preparation of the numerical models necessary for the simulation mapping of industrial-scale crushers of problematic material, such as copper ore with complex lithology. The crushers investigated in this work are located in the KGHM Polska Miedz S.A. copper ore processing plant. The complex ore consisting of sandstone, dolomite and shale is modeled using the Discrete Element Method (DEM) with Particle Replacement Model (PRM) that was chosen to simulate the crushing process. The article discusses the tests and calibration of material parameters and proceeds to test a breakage model in a laboratory-scale jaw crusher. The results are finally validated with the data from actual industrial-scale crushers and compared with the simulations. As an optimization option, the new shape of hammers is proposed and tested in a numerical environment. The performance of the newly designed hammers was examined using numerical methods. The numerical tests showed that the new design performed worse than the current solution. As a result, time and money were saved by avoiding industrial tests. In conclusion, the work shows how complex processes can be characterized in the numerical environment and used for further analysis.

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Self-compacting concrete with recycled coarse aggregates from concrete construction and demolition waste – Current state-of-the art and perspectives

Malazdrewicz

Ostrowski

Sadowski

2023

Construction and Building Materials

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Optimization of Aggregate Production Circuit through Modeling of Crusher Operation

Cited by 5 publications

References 24 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

Industry Scale Optimization: Hammer Crusher and DEM Simulations

Self-compacting concrete with recycled coarse aggregates from concrete construction and demolition waste – Current state-of-the art and perspectives

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