Variable elliptical vibrating screen: Particles kinematics and industrial application
Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen le...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Duan, Chenlong [verfasserIn] Yuan, Jiale [verfasserIn] Pan, Miao [verfasserIn] Huang, Tao [verfasserIn] Jiang, Haishen [verfasserIn] Zhao, Yuemin [verfasserIn] Qiao, Jinpeng [verfasserIn] Wang, Weinan [verfasserIn] Yu, Shijie [verfasserIn] Lu, Jiawang [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: International Journal of Mining Science and Technology - Amsterdam [u.a.] : Elsevier, 2012, 31, Seite 1013-1022 |
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| Übergeordnetes Werk: |
volume:31 ; pages:1013-1022 |
| DOI / URN: |
10.1016/j.ijmst.2021.07.006 |
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| Katalog-ID: |
ELV007167490 |
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| 245 | 1 | 0 | |a Variable elliptical vibrating screen: Particles kinematics and industrial application |
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| 520 | |a Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. | ||
| 650 | 4 | |a Variable elliptical screen | |
| 650 | 4 | |a Thin-layer and equal thickness | |
| 650 | 4 | |a Particles kinematics | |
| 650 | 4 | |a Screen length | |
| 650 | 4 | |a Industrial application | |
| 700 | 1 | |a Yuan, Jiale |e verfasserin |4 aut | |
| 700 | 1 | |a Pan, Miao |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Tao |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Haishen |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Yuemin |e verfasserin |4 aut | |
| 700 | 1 | |a Qiao, Jinpeng |e verfasserin |0 (orcid)0000-0002-5541-7503 |4 aut | |
| 700 | 1 | |a Wang, Weinan |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Shijie |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, Jiawang |e verfasserin |4 aut | |
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10.1016/j.ijmst.2021.07.006 doi (DE-627)ELV007167490 (ELSEVIER)S2095-2686(21)00079-3 DE-627 ger DE-627 rda eng 620 660 DE-600 ASIEN DE-1a fid Duan, Chenlong verfasserin aut Variable elliptical vibrating screen: Particles kinematics and industrial application 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. Variable elliptical screen Thin-layer and equal thickness Particles kinematics Screen length Industrial application Yuan, Jiale verfasserin aut Pan, Miao verfasserin aut Huang, Tao verfasserin aut Jiang, Haishen verfasserin aut Zhao, Yuemin verfasserin aut Qiao, Jinpeng verfasserin (orcid)0000-0002-5541-7503 aut Wang, Weinan verfasserin aut Yu, Shijie verfasserin aut Lu, Jiawang verfasserin aut Enthalten in International Journal of Mining Science and Technology Amsterdam [u.a.] : Elsevier, 2012 31, Seite 1013-1022 Online-Ressource (DE-627)718715004 (DE-600)2666518-9 (DE-576)367697912 2589-062X nnns volume:31 pages:1013-1022 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-ASIEN SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_2700 GBV_ILN_2817 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 31 1013-1022 |
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10.1016/j.ijmst.2021.07.006 doi (DE-627)ELV007167490 (ELSEVIER)S2095-2686(21)00079-3 DE-627 ger DE-627 rda eng 620 660 DE-600 ASIEN DE-1a fid Duan, Chenlong verfasserin aut Variable elliptical vibrating screen: Particles kinematics and industrial application 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. Variable elliptical screen Thin-layer and equal thickness Particles kinematics Screen length Industrial application Yuan, Jiale verfasserin aut Pan, Miao verfasserin aut Huang, Tao verfasserin aut Jiang, Haishen verfasserin aut Zhao, Yuemin verfasserin aut Qiao, Jinpeng verfasserin (orcid)0000-0002-5541-7503 aut Wang, Weinan verfasserin aut Yu, Shijie verfasserin aut Lu, Jiawang verfasserin aut Enthalten in International Journal of Mining Science and Technology Amsterdam [u.a.] : Elsevier, 2012 31, Seite 1013-1022 Online-Ressource (DE-627)718715004 (DE-600)2666518-9 (DE-576)367697912 2589-062X nnns volume:31 pages:1013-1022 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-ASIEN SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_2700 GBV_ILN_2817 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 31 1013-1022 |
| allfields_unstemmed |
10.1016/j.ijmst.2021.07.006 doi (DE-627)ELV007167490 (ELSEVIER)S2095-2686(21)00079-3 DE-627 ger DE-627 rda eng 620 660 DE-600 ASIEN DE-1a fid Duan, Chenlong verfasserin aut Variable elliptical vibrating screen: Particles kinematics and industrial application 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. Variable elliptical screen Thin-layer and equal thickness Particles kinematics Screen length Industrial application Yuan, Jiale verfasserin aut Pan, Miao verfasserin aut Huang, Tao verfasserin aut Jiang, Haishen verfasserin aut Zhao, Yuemin verfasserin aut Qiao, Jinpeng verfasserin (orcid)0000-0002-5541-7503 aut Wang, Weinan verfasserin aut Yu, Shijie verfasserin aut Lu, Jiawang verfasserin aut Enthalten in International Journal of Mining Science and Technology Amsterdam [u.a.] : Elsevier, 2012 31, Seite 1013-1022 Online-Ressource (DE-627)718715004 (DE-600)2666518-9 (DE-576)367697912 2589-062X nnns volume:31 pages:1013-1022 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-ASIEN SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_2700 GBV_ILN_2817 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 31 1013-1022 |
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10.1016/j.ijmst.2021.07.006 doi (DE-627)ELV007167490 (ELSEVIER)S2095-2686(21)00079-3 DE-627 ger DE-627 rda eng 620 660 DE-600 ASIEN DE-1a fid Duan, Chenlong verfasserin aut Variable elliptical vibrating screen: Particles kinematics and industrial application 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. Variable elliptical screen Thin-layer and equal thickness Particles kinematics Screen length Industrial application Yuan, Jiale verfasserin aut Pan, Miao verfasserin aut Huang, Tao verfasserin aut Jiang, Haishen verfasserin aut Zhao, Yuemin verfasserin aut Qiao, Jinpeng verfasserin (orcid)0000-0002-5541-7503 aut Wang, Weinan verfasserin aut Yu, Shijie verfasserin aut Lu, Jiawang verfasserin aut Enthalten in International Journal of Mining Science and Technology Amsterdam [u.a.] : Elsevier, 2012 31, Seite 1013-1022 Online-Ressource (DE-627)718715004 (DE-600)2666518-9 (DE-576)367697912 2589-062X nnns volume:31 pages:1013-1022 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-ASIEN SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_165 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_2700 GBV_ILN_2817 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 31 1013-1022 |
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Variable elliptical vibrating screen: Particles kinematics and industrial application |
| abstract |
Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. |
| abstractGer |
Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. |
| abstract_unstemmed |
Traditional vibrating screen usually adopts the linear centralized excitation mode, which causes the difficulty in particles loosening and low screening efficiency. The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. However, the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process. Furthermore, when external moisture is 5.96%, the screening efficiency of VEVS could reach 86.95%. The 2TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length. The areas of single layer and double layer were 56.5 and 113 m2, respectively. In industrial production, the processing capacity was 2500–3000 t/h and the screening efficiency was larger than 90%. |
| collection_details |
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| title_short |
Variable elliptical vibrating screen: Particles kinematics and industrial application |
| remote_bool |
true |
| author2 |
Yuan, Jiale Pan, Miao Huang, Tao Jiang, Haishen Zhao, Yuemin Qiao, Jinpeng Wang, Weinan Yu, Shijie Lu, Jiawang |
| author2Str |
Yuan, Jiale Pan, Miao Huang, Tao Jiang, Haishen Zhao, Yuemin Qiao, Jinpeng Wang, Weinan Yu, Shijie Lu, Jiawang |
| ppnlink |
718715004 |
| mediatype_str_mv |
c |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| doi_str |
10.1016/j.ijmst.2021.07.006 |
| up_date |
2024-07-06T23:50:18.905Z |
| _version_ |
1803875588669177856 |
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The variable elliptical vibrating screen (VEVS) trajectory is regulated to adapt the material mass along the direction of the screen length, improving the particles distribution as well as the screening efficiency. In this work, a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process. An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude. The materials kinetic characteristics were studied by using high-speed camera during screening process. Compared with equal-amplitude screen (EAS), the material moving velocity was increased by 13.03% on the first half but decreased by 3.52% on the second half, and the total screening time was reduced by 9.42% by using VEVS. In addition, −6 mm screening test was carried out. At the length of VEVS equaled to 1.2 m, the screening efficiency and the total misplaced material content were 92.50% and 2.90%, respectively. 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