CRUSHING BEHAVIORS OF LUMP COAL UNDER AN IMPACT LOAD

摘要：

Impact crushing is a widely used method for lump coal crushing, a principal way to gain small particles of coal. Crack growth theory was used to analyze the crushing behaviors of lump coal under an impact load in this paper. After derived the functions of crack growth velocity and instantaneous crack length caused by stress waves, a crushing criterion was given to determine whether lump coal was crushed or not under an impact load. Choosing lump coal with different particle sizes to do impact experiment, the result shows that the crushing criterion could make a generally accurate decision about crushing case of lump coal carrying an impact load, so it should be able to provide base for preliminary selection of impact crushing machinery.

关键词： lump coal crushing impact load stress waves crushing criterion

作者: Yu Liu Changlong Du Wei Chen

作者单位: College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China

会议类型: 国际会议

会议名称: The Fifth International Conference on VETOMAC-V(第五届振动工程及机械技术国际会议)

会议地点: 武汉

会议语种:英文

页码: 164-169

在线出版日期: 2009-08-27（万方平台首次上网日期，不代表论文的发表时间）