Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique

The reserves of high-quality coal seams have been greatly reduced in recent years, and the low efficiency of traditional cutting methods in hard coal seams has become a problem for the coal production industry. In order to improve the mining efficiency, an impacting-cutting technique was proposed in...

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Main Authors: Qiang Zhang, Cong Wang, Ying Tian
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2022/7091553
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author Qiang Zhang
Cong Wang
Ying Tian
author_facet Qiang Zhang
Cong Wang
Ying Tian
author_sort Qiang Zhang
collection DOAJ
description The reserves of high-quality coal seams have been greatly reduced in recent years, and the low efficiency of traditional cutting methods in hard coal seams has become a problem for the coal production industry. In order to improve the mining efficiency, an impacting-cutting technique was proposed in this study. A drum modification model with picks impact function was established, and crushing properties of the impacting-cutting drum at f4, f5, and f6 coal hardness were simulated using the discrete element method. The simulation results show that the impacting-cutting drum has higher coal crushing efficiency, lower drum force, and more stable cutting processes than the traditional drum. It shows that hard coal might be effectively reduced by the impacting-cutting technique to reduce the difficulty of mining, and reflected the applicability in hard coal seams. Meanwhile, a simplified test device for the impacting-cutting technique was designed. And the actual coal crushing performance was tested. The test results show that the force of the cutting mechanism in the impact mode is lower than that of the nonimpact mode, and the force is more stable. It proves that the impacting-cutting technique has a higher applicability of hard coal seams than the traditional technique.
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institution Kabale University
issn 1875-9203
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publishDate 2022-01-01
publisher Wiley
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series Shock and Vibration
spelling doaj-art-2ee200e169d148b2b2c0d5c61bd6cf412025-02-03T01:02:14ZengWileyShock and Vibration1875-92032022-01-01202210.1155/2022/7091553Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting TechniqueQiang Zhang0Cong Wang1Ying Tian2College of Mechanical EngineeringCollege of Mechanical EngineeringCollege of Mechanical and Electronic EngineeringThe reserves of high-quality coal seams have been greatly reduced in recent years, and the low efficiency of traditional cutting methods in hard coal seams has become a problem for the coal production industry. In order to improve the mining efficiency, an impacting-cutting technique was proposed in this study. A drum modification model with picks impact function was established, and crushing properties of the impacting-cutting drum at f4, f5, and f6 coal hardness were simulated using the discrete element method. The simulation results show that the impacting-cutting drum has higher coal crushing efficiency, lower drum force, and more stable cutting processes than the traditional drum. It shows that hard coal might be effectively reduced by the impacting-cutting technique to reduce the difficulty of mining, and reflected the applicability in hard coal seams. Meanwhile, a simplified test device for the impacting-cutting technique was designed. And the actual coal crushing performance was tested. The test results show that the force of the cutting mechanism in the impact mode is lower than that of the nonimpact mode, and the force is more stable. It proves that the impacting-cutting technique has a higher applicability of hard coal seams than the traditional technique.http://dx.doi.org/10.1155/2022/7091553
spellingShingle Qiang Zhang
Cong Wang
Ying Tian
Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
Shock and Vibration
title Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
title_full Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
title_fullStr Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
title_full_unstemmed Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
title_short Numerical and Experimental Study on Crushing Properties of Hard Coal Using Impacting-Cutting Technique
title_sort numerical and experimental study on crushing properties of hard coal using impacting cutting technique
url http://dx.doi.org/10.1155/2022/7091553
work_keys_str_mv AT qiangzhang numericalandexperimentalstudyoncrushingpropertiesofhardcoalusingimpactingcuttingtechnique
AT congwang numericalandexperimentalstudyoncrushingpropertiesofhardcoalusingimpactingcuttingtechnique
AT yingtian numericalandexperimentalstudyoncrushingpropertiesofhardcoalusingimpactingcuttingtechnique