基于黏结理论的球磨机梯形衬板的设计

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (369 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要对磨矿用的球磨机,设计等高形的提升条(编号为20-20)和3种不同的高低交替形提升条(编号分别为20-18,20-16和20-14),通过三维建模软件Solid Edge对这几种不同形式的球磨机提升条进行建模,然后将模型导入EDEM中,计算矿石的BPM模型中黏结键的断裂数目以及提升条和筒体受到的累积能量,研究衬板设计对球磨机磨矿效率和磨损程度的影响。结果表明,与装有等高形提升条的模型(20-20)相比,装有高低交替形提升条的模型(20-18, 20-16, 20-14)中矿石的BPM黏结键断裂数目更多,即磨矿效率更高。其中,模型20-14内矿石BPM黏结键断裂数目增加11.3%,破碎效果最好。与模型20-20相比,模型20-18和模型20-14的提升条与筒体受到的累积能量分别降低18.6%和28.1%,提升条与筒体的磨损程度减小,但20-16的累积能量增加,球磨机的磨损增大。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	褚亮
	董为民
	龚梦

关键词 ：球磨机, 梯形衬板, BPM黏结理论, 破碎, 离散元法, 磨损

Abstract：For the ball mill for grinding, the lifting bars with the same height (numbered 20-20) and 3 kinds of lifting bars with different heights (numbered 20-18, 20-16, and 20-14) were designed. A four-dimensional modeling software Solid Edge was used to model those different types of ball mill lifting bars, and then the model was imported into EDEM to calculate the number of fractures of the BPM bond in the ore model and the cumulative energy received by the lifting bar and the cylinder, to study the effect of liner design on ball mill grinding efficiency and the wear of ball mill. The results show that compared with the model equipped with contour lifting bars (20-20), the number of BPM bond fractures of the ore model in the models equipped with high-and-low lifting bars(20-18, 20-16, 20-14) is higher, that is, the grinding efficiency is higher. Among them, the number of BPM bond breaks of the ore in the model 20-14 is increased by 11.3%, and the crushing effect is the best. Compared with the model 20-20, the cumulative energy of the lift bar and the cylinder of the model 20-18 and the model 20-14 are reduced by 18.6% and 28.1%, respectively, and the wear of the lift bar and the cylinder is reduced. However, the cumulative energy of the model 20-16 and the wear of the ball mill increase.

Key words： ball mill trapezoidal liner bonded particle model crush EDEM wear

收稿日期: 2019-10-20 出版日期: 2020-06-19

ZTFLH:	TD435
	TP319

通讯作者: 董为民,教授。电话：15687157891;E-mail: m15687157891@163.com

引用本文:

褚亮, 董为民, 龚梦. 基于黏结理论的球磨机梯形衬板的设计[J]. 粉末冶金材料科学与工程, 2020, 25(1): 86-90.
CHU Liang, DONG Weimin, GONG Meng. Design of trapezoidal liner of ball mill based on bonding theory. Materials Science and Engineering of Powder Metallurgy, 2020, 25(1): 86-90.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2020/V25/I1/86

[1] 段希祥. 碎矿与磨矿[M]. 北京: 冶金工业出版社, 2012: 141.
DUAN Xixiang.Crushing and Grinding[M]. Beijing: Metallurgical Industry Press, 2012: 141.
[2] 韩春阳, 和蕴锋, 陈松战, 等. 半自磨机筒体衬板结构设计比较[J]. 矿山机械, 2016(7): 55-57.
HAN Chunyang, HE Yunfeng, CHEN Songzhan, et al.Comparison on structural design of shell liner of SAG mill[J]. Mining & Processing Equipment, 2016(7): 55-57.
[3] 张学东. 基于耦合仿生理论的球磨机提升条表面设计与研究[D]. 昆明: 昆明理工大学, 2018.
ZHANG Xuedong.Design and research of ball mill lifting bar’s surface based on the bionic coupling theory[D]. Kunming: Kunming University of Science and Technology, 2018.
[4] 侯亚娟. 基于离散元与有限元耦合的大型球磨机衬板性能研究[D]. 长春: 吉林大学, 2015.
HOU Yajuan.Research on performance of large tumbling mill liners based on DEM-FEM coupling approach[D]. Changchun: Jilin University, 2015
[5] 汪滋润. 黏结理论及离散元法在半自磨机衬板设计中的应用研究[D]. 昆明: 昆明理工大学, 2017.
WANG Zirun.Design of SAG mill liner based on bond theory and discrete element method[D]. Kunming: Kunming University of Science and Technology, 2017.
[6] POTYONDY D O, CUNDALL P A.A bonded-particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences, 2004, 41: 1329-1364.
[7] KEMENY J M.A model for non-linear rock deformation under compression due to sub-critical crack growth[J]. International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, 1991, 28(6): 459-467.
[8] KEMENY M, COOK G W.Micromechanics of Deformation in Rocks[M]. Dordrecht: Kluwer Academic Publishers, 1991: 562-568.
[9] 胡励. 机械产品设计中的颗粒离散元仿真技术及实现[D]. 武汉: 武汉大学, 2013.
HU Li.Techniques and implementation of granular DEM simulation for mechanical product design[D]. Wuhan: Wuhan University, 2013.
[10] 孙军锋. 衬板机构对球磨机磨矿效率的影响研究[D]. 昆明: 昆明理工大学, 2012.
SUN Junfeng.Study on the impact of liner structure to the grinding efficiency of ball mill[D]. Kunming: Kunming University of Science and Technology, 2012.
[11] 李占长, 黄雨, 付向上, 等. 大型半自磨机衬板的选材与制备[J]. 铸造技术, 2019(2): 143-146.
LI Zhanchang, HUANG Yu, FU Xiangshang, et al.Material selection of large semi-autogenous grinding mill liners[J]. Foundry Technology, 2019(2): 143-146
[12] 褚亮, 董为民, 张学东, 等. 基于仿生特征的球磨机提升条表面设计[J]. 有色金属工程, 2019(10): 70-76.
CHU Liang, DONG Weimin, ZHANG Xuedong, et al.Design of ball mill lifting bar’s surface based on the bionic feature[J]. Nonferrous Metals Engineering, 2019(10): 70-76.
[13] 张学东, 董为民, 周海燕, 等. 具有仿生特征的球磨机提升条耐磨性数值模拟[J]. 有色金属(选矿), 2017(6): 56-62.
ZHANG Xuedong, DONG Weimin, ZHOU Haiyan, et al.Simulation analysis of lifting bars of ball mill with bionic characteristics[J]. Nonferrous Metals (Mineral Processing Section), 2017(6): 56-62.
[14] 周海燕. 道砟级配对捣固效果的影响研究[D]. 昆明: 昆明理工大学, 2018.
ZHOU Haiyan.Study on the impact of ballast grading on tamping effect[D]. Kunming: Kunming University of Science and Technology, 2018.
[15] 及钊. 岩土BPM建模方法及其岩土机械应用仿真研究[D]. 长春: 吉林大学, 2015.
JI Zhao.The established method of precise BPM for geotechnical and its application in geotechnical machinery simulation[D]. Changchun: Jilin University, 2015.