The Experts below are selected from a list of 39966 Experts worldwide ranked by ideXlab platform
Chusheng Liu - One of the best experts on this subject based on the ideXlab platform.
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Kinematics and mechanism of rigid-flex elastic Screening for moist coal under disequilibrium excitation
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Long Huang, Chenlong Duan, Zhenfu Luo, Quanqiang Wang, Zhiguo ZhouAbstract:Elastic Screening methods are widely used in the classification of moist coal as they can overcome the problem of aperture blockage. However, the use of an equally inclined Screen Surface with bala...
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Effect of excitation parameters on motion characteristics and classification performance of rigid-flexible coupled elastic Screen Surface for moist coal
Advanced Powder Technology, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Zhiguo Zhou, Chenlong Duan, Miao Pan, Song BaochengAbstract:Abstract Elastic Screen Surfaces are widely used for classification of moist steam coal. In this study, a novel rigid-flexible coupled elastic Screen Surface was proposed, and its motion characteristics were investigated. Furthermore, the effect of excitation parameters on classification performance was analyzed. The results showed that the acceleration of the flexible elastic Screen Surface were markedly larger than those of the Screen box due to the large deformation. The y-axis acceleration amplitudes of the elastic Screen Surface were about 150% higher than those of Screen box, and showed a more pronounced increase during the feeding process, but decreased during the stable state compared to the no-load condition. With increasing total excitation force and frequency, the accelerations increased, the Screening efficiency increased first and then decreased, while total misplaced materials changed in the opposite direction. The maximum Screening efficiency of 83.15%, indicating the satisfactory classification performance for moist coal.
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Research on impact characteristics of Screening coals on vibrating Screen based on discrete-finite element method
Energy Sources Part A: Recovery Utilization and Environmental Effects, 2019Co-Authors: Zhenqian Wang, Chusheng Liu, Li-ping Peng, Chenglei Zhang, Yuemin ZhaoAbstract:Screening is used extensively for the size classification of coals. During the Screening process, the impact of oversized material often causes damage to the Screen Surface, which then affects the ...
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Kinematics of elastic Screen Surface and elimination mechanism of plugging during dry deep Screening of moist coal
Powder Technology, 2019Co-Authors: Zhiguo Zhou, Zhenqian Wang, Haishen Jiang, Yuemin Zhao, Long Huang, Pengfei Wen, Lala Zhao, Chenlong Duan, Zhenfu Luo, Chusheng LiuAbstract:ABSTRACT The vibrating Screens with elastic Screen Surface (EVS) have been widely used for cleaning moist coal due to their good performance. In this work, the kinematics and spatial behaviors of a novel elastic Screen Surface, and the Screening behavior of particles were investigated using dynamic simulation and image analysis system to reveal the elimination mechanism of plugging during dry deep Screening of moist coal. Furthermore, the effect of technological parameters on the performance of elastic deep Screening was studied using single factor test method. The results indicated that the average vibration intensities of elastic Screen rod and tube were significantly larger than 20 because of the collisions, which promoted the loosening of material. The frequency-domain of the elastic Screen Surface contained the fundamental frequency of the covering film, which resulted in the resonance and eventual breaking down of the covering film. The change in the spatial position of adjacent elastic Screen Surface and their own deformation led to the periodic fluctuation of Screen aperture. Besides, the spatial rotation of the Screen tube exhibited shear effect on the covering film, the adherent and the near-aperture particles, whereas the direction of spatial force was random, therefore, the rupture of the covering film and the adherent particles was promoted. In addition, with the increase of amplitude and feed rate, the Screening efficiency first increased and then decreased, while with the increase of the speed of excitation motor and Screen length, the Screening efficiency gradually increased. When the values of amplitude, excitation motor speed, Screen length and feed rate were 4.3 mm, 1000 r/min, 1200 mm and 1.5 kg/s respectively, the Screening efficiency of Li Jiahao and Wan Li coal samples was >86%.
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Simultaneous multiple parameter optimization of variable-amplitude equal-thickness elastic Screening of moist coal
Powder Technology, 2019Co-Authors: Haishen Jiang, Yuemin Zhao, Zhiguo Zhou, Pengfei Wen, Lala Zhao, Chenlong Duan, Zhenfu Luo, Weinan Wang, Han Jun, Chusheng LiuAbstract:Abstract Screening is a key unit during coal cleaning. One of the most widely used Screening technologies for steam coal preparation after removal of fine fractions, is a 6 mm Screening method. We propose a novel variable-amplitude equal-thickness elastic Screen (VAETES) to solve the problem of material accumulation and Screen aperture blockage during the 6 mm Screening process of steam moist coal. Kinematics of the Screen Surface and moist coal during process of the VAETES were investigated by simulation and high-speed dynamic photography. Influence of several operating factors on the Screening process was analyzed using Box–Behnken response Surface methodology. Simultaneous optimization of multiple parameters was conducted to obtain optimal operating conditions, which were further verified by the Screening experiments. The results showed that the average amplitude decreased from the feed end to the discharge end, while the average acceleration amplitudes of the Screen Surface were > 300 m/s2. No accumulation of materials and blockage of the Screen aperture was observed during the Screening process. The importance of factors affecting η was in the following order: kf > Ayc > Dr. The actual Screening efficiency was 87.79%, and the total misplaced materials was 6.77% under the optimal operating conditions.
Yuemin Zhao - One of the best experts on this subject based on the ideXlab platform.
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Kinematics and mechanism of rigid-flex elastic Screening for moist coal under disequilibrium excitation
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Long Huang, Chenlong Duan, Zhenfu Luo, Quanqiang Wang, Zhiguo ZhouAbstract:Elastic Screening methods are widely used in the classification of moist coal as they can overcome the problem of aperture blockage. However, the use of an equally inclined Screen Surface with bala...
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Kinematic characteristics of banana Screen Surface and operational parameter optimization for coal classification
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Long Huang, Haishen Jiang, Yuemin Zhao, Chenlong Duan, Miao Pan, Liang Dong, Jinpeng Qiao, Yueguo WangAbstract:Screening is an indispensable unit operation that is used extensively in many industries to separate particulate materials into different size fractions. A banana Screen has high Screening efficien...
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Effect of excitation parameters on motion characteristics and classification performance of rigid-flexible coupled elastic Screen Surface for moist coal
Advanced Powder Technology, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Zhiguo Zhou, Chenlong Duan, Miao Pan, Song BaochengAbstract:Abstract Elastic Screen Surfaces are widely used for classification of moist steam coal. In this study, a novel rigid-flexible coupled elastic Screen Surface was proposed, and its motion characteristics were investigated. Furthermore, the effect of excitation parameters on classification performance was analyzed. The results showed that the acceleration of the flexible elastic Screen Surface were markedly larger than those of the Screen box due to the large deformation. The y-axis acceleration amplitudes of the elastic Screen Surface were about 150% higher than those of Screen box, and showed a more pronounced increase during the feeding process, but decreased during the stable state compared to the no-load condition. With increasing total excitation force and frequency, the accelerations increased, the Screening efficiency increased first and then decreased, while total misplaced materials changed in the opposite direction. The maximum Screening efficiency of 83.15%, indicating the satisfactory classification performance for moist coal.
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Kinematics of a novel Screen Surface and parameter optimization for steam coal classification
Powder Technology, 2020Co-Authors: Miao Pan, Haishen Jiang, Yuemin Zhao, Long Huang, Chenlong Duan, Ligang Tang, Pengfei WenAbstract:Abstract Dry deep Screening plays an important role in the cleaner production of steam coal, increasing the sorting proportion of steam coal and realizing the reduction of the produced slime to prevent environmental pollution. In this study, a rigid-flexible-coupled elastic Screen Surface (R-FCESS) was proposed for steam coal classification with 3-mm apertures. In addition, the motion trajectory and vibration mode composition of regions on the R-FCESS were investigated by vibration testing technology. The acceleration amplitude on the elastic region of the R-FCESS reached 46.98 m/s2, which was increased by 22.91 m/s2 in comparison with that of the rigid region. The spatio-temporal evolution and distribution of the material bed on the Screen Surface were analyzed by using a high-speed camera. The projection height of particles in the elastic region was considerably greater than that in the rigid region. Furthermore, the −3 mm classification test of steam coal was carried out, and effects of the excitation force, current frequency, and feed rate on the Screening effect were clarified. At an excitation force of 6.43 kN, a current frequency of 48 Hz, and a feed rate of 2.00 kg/s, the Screening efficiency and total misplaced material were 89.27% and 5.92%, respectively. Based on the study, a novel process for the separation of steam coal was proposed, leading to the low coal slurry production as well as low pollution.
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Research on impact characteristics of Screening coals on vibrating Screen based on discrete-finite element method
Energy Sources Part A: Recovery Utilization and Environmental Effects, 2019Co-Authors: Zhenqian Wang, Chusheng Liu, Li-ping Peng, Chenglei Zhang, Yuemin ZhaoAbstract:Screening is used extensively for the size classification of coals. During the Screening process, the impact of oversized material often causes damage to the Screen Surface, which then affects the ...
Haishen Jiang - One of the best experts on this subject based on the ideXlab platform.
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Kinematics and mechanism of rigid-flex elastic Screening for moist coal under disequilibrium excitation
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Long Huang, Chenlong Duan, Zhenfu Luo, Quanqiang Wang, Zhiguo ZhouAbstract:Elastic Screening methods are widely used in the classification of moist coal as they can overcome the problem of aperture blockage. However, the use of an equally inclined Screen Surface with bala...
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Kinematic characteristics of banana Screen Surface and operational parameter optimization for coal classification
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Long Huang, Haishen Jiang, Yuemin Zhao, Chenlong Duan, Miao Pan, Liang Dong, Jinpeng Qiao, Yueguo WangAbstract:Screening is an indispensable unit operation that is used extensively in many industries to separate particulate materials into different size fractions. A banana Screen has high Screening efficien...
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Effect of excitation parameters on motion characteristics and classification performance of rigid-flexible coupled elastic Screen Surface for moist coal
Advanced Powder Technology, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Zhiguo Zhou, Chenlong Duan, Miao Pan, Song BaochengAbstract:Abstract Elastic Screen Surfaces are widely used for classification of moist steam coal. In this study, a novel rigid-flexible coupled elastic Screen Surface was proposed, and its motion characteristics were investigated. Furthermore, the effect of excitation parameters on classification performance was analyzed. The results showed that the acceleration of the flexible elastic Screen Surface were markedly larger than those of the Screen box due to the large deformation. The y-axis acceleration amplitudes of the elastic Screen Surface were about 150% higher than those of Screen box, and showed a more pronounced increase during the feeding process, but decreased during the stable state compared to the no-load condition. With increasing total excitation force and frequency, the accelerations increased, the Screening efficiency increased first and then decreased, while total misplaced materials changed in the opposite direction. The maximum Screening efficiency of 83.15%, indicating the satisfactory classification performance for moist coal.
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Kinematics of a novel Screen Surface and parameter optimization for steam coal classification
Powder Technology, 2020Co-Authors: Miao Pan, Haishen Jiang, Yuemin Zhao, Long Huang, Chenlong Duan, Ligang Tang, Pengfei WenAbstract:Abstract Dry deep Screening plays an important role in the cleaner production of steam coal, increasing the sorting proportion of steam coal and realizing the reduction of the produced slime to prevent environmental pollution. In this study, a rigid-flexible-coupled elastic Screen Surface (R-FCESS) was proposed for steam coal classification with 3-mm apertures. In addition, the motion trajectory and vibration mode composition of regions on the R-FCESS were investigated by vibration testing technology. The acceleration amplitude on the elastic region of the R-FCESS reached 46.98 m/s2, which was increased by 22.91 m/s2 in comparison with that of the rigid region. The spatio-temporal evolution and distribution of the material bed on the Screen Surface were analyzed by using a high-speed camera. The projection height of particles in the elastic region was considerably greater than that in the rigid region. Furthermore, the −3 mm classification test of steam coal was carried out, and effects of the excitation force, current frequency, and feed rate on the Screening effect were clarified. At an excitation force of 6.43 kN, a current frequency of 48 Hz, and a feed rate of 2.00 kg/s, the Screening efficiency and total misplaced material were 89.27% and 5.92%, respectively. Based on the study, a novel process for the separation of steam coal was proposed, leading to the low coal slurry production as well as low pollution.
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Kinematics of elastic Screen Surface and elimination mechanism of plugging during dry deep Screening of moist coal
Powder Technology, 2019Co-Authors: Zhiguo Zhou, Zhenqian Wang, Haishen Jiang, Yuemin Zhao, Long Huang, Pengfei Wen, Lala Zhao, Chenlong Duan, Zhenfu Luo, Chusheng LiuAbstract:ABSTRACT The vibrating Screens with elastic Screen Surface (EVS) have been widely used for cleaning moist coal due to their good performance. In this work, the kinematics and spatial behaviors of a novel elastic Screen Surface, and the Screening behavior of particles were investigated using dynamic simulation and image analysis system to reveal the elimination mechanism of plugging during dry deep Screening of moist coal. Furthermore, the effect of technological parameters on the performance of elastic deep Screening was studied using single factor test method. The results indicated that the average vibration intensities of elastic Screen rod and tube were significantly larger than 20 because of the collisions, which promoted the loosening of material. The frequency-domain of the elastic Screen Surface contained the fundamental frequency of the covering film, which resulted in the resonance and eventual breaking down of the covering film. The change in the spatial position of adjacent elastic Screen Surface and their own deformation led to the periodic fluctuation of Screen aperture. Besides, the spatial rotation of the Screen tube exhibited shear effect on the covering film, the adherent and the near-aperture particles, whereas the direction of spatial force was random, therefore, the rupture of the covering film and the adherent particles was promoted. In addition, with the increase of amplitude and feed rate, the Screening efficiency first increased and then decreased, while with the increase of the speed of excitation motor and Screen length, the Screening efficiency gradually increased. When the values of amplitude, excitation motor speed, Screen length and feed rate were 4.3 mm, 1000 r/min, 1200 mm and 1.5 kg/s respectively, the Screening efficiency of Li Jiahao and Wan Li coal samples was >86%.
Gu Cheng-xian - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Structure Parameters on Vibration Characteristics of Single-Shaft Vibrating Screen
Machinery Design and Manufacture, 2014Co-Authors: Gu Cheng-xianAbstract:To analyze the influence degree of the structural parameters such as single-shaft vibrating Screen bearing seat position,the spring stiffness and vibration exciter installation location on the vibration characteristics,the dynamic equations of the system are established,and the system vibration amplitude,equation of torsion angle and each point along vibrating Screen Surface are obtained. It could get the main factors that affect the vibration characteristics which is torsion angle,then analyzes the impact of the relative distance of the bearing seat position and vibrating mass center of mass,the supporting spring stiffness and the offset between rotation center of vibration exciter and center of mass on the Screen body characteristics.The amplitude of vibration and acceleration of feeding and discharge end are analyzed by using 3D modeling software and dynamic simulation software modeling and simulation. The value and curve of vibration displacement and acceleration at different points along the Screen Surface are got,and the result shows that the installation position of vibration exciter has the biggest impact. The data and curve obtained verifies the inference model to prepare for the further study of single shaft vibrating Screen variable trajectory and improving production efficiency.
Chenlong Duan - One of the best experts on this subject based on the ideXlab platform.
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Kinematics and mechanism of rigid-flex elastic Screening for moist coal under disequilibrium excitation
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Long Huang, Chenlong Duan, Zhenfu Luo, Quanqiang Wang, Zhiguo ZhouAbstract:Elastic Screening methods are widely used in the classification of moist coal as they can overcome the problem of aperture blockage. However, the use of an equally inclined Screen Surface with bala...
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Kinematic characteristics of banana Screen Surface and operational parameter optimization for coal classification
International Journal of Coal Preparation and Utilization, 2020Co-Authors: Long Huang, Haishen Jiang, Yuemin Zhao, Chenlong Duan, Miao Pan, Liang Dong, Jinpeng Qiao, Yueguo WangAbstract:Screening is an indispensable unit operation that is used extensively in many industries to separate particulate materials into different size fractions. A banana Screen has high Screening efficien...
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Effect of excitation parameters on motion characteristics and classification performance of rigid-flexible coupled elastic Screen Surface for moist coal
Advanced Powder Technology, 2020Co-Authors: Haishen Jiang, Chusheng Liu, Yuemin Zhao, Zhiguo Zhou, Chenlong Duan, Miao Pan, Song BaochengAbstract:Abstract Elastic Screen Surfaces are widely used for classification of moist steam coal. In this study, a novel rigid-flexible coupled elastic Screen Surface was proposed, and its motion characteristics were investigated. Furthermore, the effect of excitation parameters on classification performance was analyzed. The results showed that the acceleration of the flexible elastic Screen Surface were markedly larger than those of the Screen box due to the large deformation. The y-axis acceleration amplitudes of the elastic Screen Surface were about 150% higher than those of Screen box, and showed a more pronounced increase during the feeding process, but decreased during the stable state compared to the no-load condition. With increasing total excitation force and frequency, the accelerations increased, the Screening efficiency increased first and then decreased, while total misplaced materials changed in the opposite direction. The maximum Screening efficiency of 83.15%, indicating the satisfactory classification performance for moist coal.
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Kinematics of a novel Screen Surface and parameter optimization for steam coal classification
Powder Technology, 2020Co-Authors: Miao Pan, Haishen Jiang, Yuemin Zhao, Long Huang, Chenlong Duan, Ligang Tang, Pengfei WenAbstract:Abstract Dry deep Screening plays an important role in the cleaner production of steam coal, increasing the sorting proportion of steam coal and realizing the reduction of the produced slime to prevent environmental pollution. In this study, a rigid-flexible-coupled elastic Screen Surface (R-FCESS) was proposed for steam coal classification with 3-mm apertures. In addition, the motion trajectory and vibration mode composition of regions on the R-FCESS were investigated by vibration testing technology. The acceleration amplitude on the elastic region of the R-FCESS reached 46.98 m/s2, which was increased by 22.91 m/s2 in comparison with that of the rigid region. The spatio-temporal evolution and distribution of the material bed on the Screen Surface were analyzed by using a high-speed camera. The projection height of particles in the elastic region was considerably greater than that in the rigid region. Furthermore, the −3 mm classification test of steam coal was carried out, and effects of the excitation force, current frequency, and feed rate on the Screening effect were clarified. At an excitation force of 6.43 kN, a current frequency of 48 Hz, and a feed rate of 2.00 kg/s, the Screening efficiency and total misplaced material were 89.27% and 5.92%, respectively. Based on the study, a novel process for the separation of steam coal was proposed, leading to the low coal slurry production as well as low pollution.
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Kinematics of elastic Screen Surface and elimination mechanism of plugging during dry deep Screening of moist coal
Powder Technology, 2019Co-Authors: Zhiguo Zhou, Zhenqian Wang, Haishen Jiang, Yuemin Zhao, Long Huang, Pengfei Wen, Lala Zhao, Chenlong Duan, Zhenfu Luo, Chusheng LiuAbstract:ABSTRACT The vibrating Screens with elastic Screen Surface (EVS) have been widely used for cleaning moist coal due to their good performance. In this work, the kinematics and spatial behaviors of a novel elastic Screen Surface, and the Screening behavior of particles were investigated using dynamic simulation and image analysis system to reveal the elimination mechanism of plugging during dry deep Screening of moist coal. Furthermore, the effect of technological parameters on the performance of elastic deep Screening was studied using single factor test method. The results indicated that the average vibration intensities of elastic Screen rod and tube were significantly larger than 20 because of the collisions, which promoted the loosening of material. The frequency-domain of the elastic Screen Surface contained the fundamental frequency of the covering film, which resulted in the resonance and eventual breaking down of the covering film. The change in the spatial position of adjacent elastic Screen Surface and their own deformation led to the periodic fluctuation of Screen aperture. Besides, the spatial rotation of the Screen tube exhibited shear effect on the covering film, the adherent and the near-aperture particles, whereas the direction of spatial force was random, therefore, the rupture of the covering film and the adherent particles was promoted. In addition, with the increase of amplitude and feed rate, the Screening efficiency first increased and then decreased, while with the increase of the speed of excitation motor and Screen length, the Screening efficiency gradually increased. When the values of amplitude, excitation motor speed, Screen length and feed rate were 4.3 mm, 1000 r/min, 1200 mm and 1.5 kg/s respectively, the Screening efficiency of Li Jiahao and Wan Li coal samples was >86%.