Kinematic characteristics of elastic screen surface and screening performance of material groupsunder different additional excitation conditions.
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| Title: | Kinematic characteristics of elastic screen surface and screening performance of material groupsunder different additional excitation conditions. |
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| Authors: | Liu, Yuhan1 (AUTHOR), Kang, Yongfei1,2 (AUTHOR), Yang, Ran1 (AUTHOR), Li, Xinhao1 (AUTHOR), Wang, Hong1 (AUTHOR), Yang, Yadong3 (AUTHOR), Jiang, Hao4 (AUTHOR), Jiang, Haishen1,3 (AUTHOR) Haishen_jiang2015@163.com, Duan, Chenlong1,3 (AUTHOR) clduan@cumt.edu.cn |
| Source: | International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 2, p402-422. 21p. |
| Subject Terms: | *Vibration tests, *Separation (Technology), *Excitation (Physiology), *Equations of motion, *Materials testing, *Materials handling equipment |
| Abstract: | Screening is indispensable process, which is extensively used in coal separation on a global scale. In traditional screening, material stratification is difficult to achieve, which leads to a poor screening effect. In this study, balls are added under the elastic screen surface to increase the screen amplitude and promote the loose stratification of materials. The screen surface motion characteristics, the changes of the material layer on the screen, the material distribution characteristics under the screen, and the screening efficiency are studied by means of vibration tests, high-speed dynamic recording, and screening tests. The experimental results show that when 2-ball additional excitation is applied, the highest screening efficiency of 79.45% is reached, the elastic screen surface can produce a large amplitude of up to 24.77 mm, the screen surface deformation is larger, the material layer is looser, material migration is faster, and the screening effect is better. The main screening area of the material is the second sections of the screening surface, and the screening efficiency of fine particles is mainly affected by the screening efficiency of complex excitation screening. With the increase of the screening surface length, the screening effect of complex excitation elastic screening becomes better. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | Screening is indispensable process, which is extensively used in coal separation on a global scale. In traditional screening, material stratification is difficult to achieve, which leads to a poor screening effect. In this study, balls are added under the elastic screen surface to increase the screen amplitude and promote the loose stratification of materials. The screen surface motion characteristics, the changes of the material layer on the screen, the material distribution characteristics under the screen, and the screening efficiency are studied by means of vibration tests, high-speed dynamic recording, and screening tests. The experimental results show that when 2-ball additional excitation is applied, the highest screening efficiency of 79.45% is reached, the elastic screen surface can produce a large amplitude of up to 24.77 mm, the screen surface deformation is larger, the material layer is looser, material migration is faster, and the screening effect is better. The main screening area of the material is the second sections of the screening surface, and the screening efficiency of fine particles is mainly affected by the screening efficiency of complex excitation screening. With the increase of the screening surface length, the screening effect of complex excitation elastic screening becomes better. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19392699 |
| DOI: | 10.1080/19392699.2025.2456224 |
