Modeling and parameter optimization for the design of vibrating screens

Li, Zhanfu; Tong, Xin; Zhou, Bi; Wang, Xiaoyue

doi:10.1016/j.mineng.2015.07.009

Cited by 69 publications

(40 citation statements)

References 28 publications

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“…For the sake of the acquisition of the different particle sizes that were divided in the simulation, a shock type-based vibrating screen (see Figure 8) was employed to sieve materials of different sizes (D refers to the aperture size of each screen mesh in Figure 8). It is obvious that it is very difficult to cover every particular factor precisely in a simulation model [24]. Firstly, the parallels of material properties, collision properties as well as input settings between numerical simulations and a real banana screen can never be exact.…”

Section: Experimental Verificationmentioning

confidence: 99%

Vibration Parameter Optimization of a Linear Vibrating Banana Screen Using DEM 3D Simulation

Xia

et al. 2018

J. Eng. Technol. Sci.

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In this paper, the effects of vibration parameters of a banana screen, i.e. frequency, amplitude and vibration direction angle, on the screening efficiency per unit time were studied using the discrete element method (DEM). The simulations were validated according to data collected from an experimental prototype screen. Functional relationships between vibration parameters and screening efficiency per unit time are presented. The results showed that the screening efficiency per unit time first displays an increase and later a decrease when the frequency, amplitude or vibration direction angle increased respectively. Vibration parameter optimization was also investigated, using an orthogonal experiment. Based on the banana screen model, it can be concluded that when the frequency is 22 Hz, the amplitude is 2.2 mm and the vibration direction angle is 39°, the screening efficiency of a banana screen is optimal.

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Section: Experimental Verificationmentioning

confidence: 99%

Vibration Parameter Optimization of a Linear Vibrating Banana Screen Using DEM 3D Simulation

Xia

et al. 2018

J. Eng. Technol. Sci.

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“…The salient challenge with linear vibrating screening is the general lack of insightful understanding on the topic, and therefore lack of optimal designs. This aspect has been observed by many researchers within the last decade, even though linear screens have been in use for well over a century . Big steps have however been made on building empirical models that have successfully guided screening operations in the industry.…”

Section: Introductionmentioning

confidence: 98%

“…Vibrating screens have an exceptional, and long history in particles’ classification, with some research stating that it is probably the oldest . They play an important role, first before comminution, to reject excessive coarse material, e.g., earth and rock from the finer gangue in the mines, and second, to grade the products on final processing.…”

Section: Introductionmentioning

confidence: 99%

Dynamic population balance and flow models for granular solids in a linear vibrating screen

Rotich

Tuunila

Elkamel³

et al. 2016

AIChE Journal

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Vibrating screens are a widely applied form of particle separations. In spite of this significance, their understanding is still an obstacle. Three approaches were used to characterize the flow of granular material in a linear vibrating screen. The statistical model, mass action, and kinetic model based on conservation of momentum were derived. Experiments were then conducted on a multi-sized prototype screen and glass beads of sizes 0.75, 1, 2, 3 mm. Deck inclinations were varied over 7.5,12.5, and 17.58, and frequencies over 7, 15, and 20 Hz. A total of 72 feed batches and a constant power of 50 W was used. The experimental data was then used to validate the models. The three models provided accurate flow prediction over the screens. Additionally, the kinetic model also provided a basis for optimal design of the screening unit operation, by allowing manipulation of seven design variables to obtain a 95-100% efficient vibrating screen.

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“…rough comparison with the corresponding modal experiments, it has been proved the FEM simulation results can accurately predicted the real natural frequencies through well-accordant modeling [5,6]. Based on FEM simulations, dynamic response characteristics of screen were widely studied, especially the influence of structure parameters on dynamic response characteristics [7], so are the dynamic responses changing regularities of vibrating screen under different forced vibration frequencies [8,9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Load Weight on Dynamic Response of Vibrating Screen

Jiang

Dong³

et al. 2019

Shock and Vibration

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The dynamic response of the vibrating screen has a great impact on the screening efficiency and fatigue life of the structures. For the conventional dynamic design, the consideration of the influence of load weight on dynamic response is lacking. So, in this paper, taking a very common vibrating screen used in tunnel construction as an example, the relationship between the screen dynamic response and the load weight is studied through numerical simulations. Firstly, to make sure the accuracy of simulation, the three-dimensional finite element model of a vibration screen is strictly built to maximize consistency with the real screen, and then the simulated results are validated by experiments. Furthermore, the variation regularity of dynamic response with the load weight and excitation frequency is analyzed based on simulations. Results show the load weight has obvious influence on the modal shapes as well as the natural frequencies. There are three regions that will lead to the sudden increase of vibration acceleration: (1) the load weight variates within 0–50 kg and excitation frequency variates within 40–60 Hz; (2) the load weight variates within 10–100 kg and excitation frequency variates within 50–90 Hz; (3) the load weight variates within 80–200 kg and excitation frequency variates within 70–100 Hz. These results will provide new theoretical reference for the maintenance and further improvement in the dynamic design of the vibrating screen.

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Modeling and parameter optimization for the design of vibrating screens

Cited by 69 publications

References 28 publications

Vibration Parameter Optimization of a Linear Vibrating Banana Screen Using DEM 3D Simulation

Vibration Parameter Optimization of a Linear Vibrating Banana Screen Using DEM 3D Simulation

Dynamic population balance and flow models for granular solids in a linear vibrating screen

Influence of Load Weight on Dynamic Response of Vibrating Screen

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