中南大学学报（自然科学版）2017，Vol.48Issue(5)：1127-1133,7.DOI:10.11817/j.issn.1672-7207.2017.05.001
不同碎磨方式下紫金山金铜矿石的磨矿动力学行为
Grinding kinetic behaviors of Au-Cu ore from Zijinshan by different comminuting processes
摘要
Abstract
Au-Cu ore from Zijinshan was crushed by high pressure grinding rolls (HPGR) and jaw crusher(JC), and batch grinding test of the product crushed by different crushing processes was carried out. Grinding speed of each particle size of the products crushed by HPGR and JC was analyzed by MATLAB based on grinding kinetics principle. The micro-crack of the products was analyzed by means of scanning electron microscope (SEM), and distribution characteristics of the grinding product were analyzed. The results show that at the beginning of the grinding, micro-crack mainly affects the grinding speed of the products crushed by HPGR and JC. The more micro-crack is, the faster grinding speed is. The maximum of grinding speed of the products crushed by HPGR is faster than that by JC in coarse particle size (0.20?3.20 mm), and the more coarse particle size mass fraction is, and the larger the difference of the amount of micro-crack and maximum of grinding speed is. With the increase of grinding time, the content of the coarse particle and micro-crack becomes less and less. Grinding probability mainly affects the grinding speed, leading to the fact that the grinding speed of the product crushed by HPGR is equal to the product crushed by JC. Pulverization technology of HPGR can make grinding particle size distribution more uniform, and also can make size composition more optimal.关键词
高压辊磨机/磨矿动力学/磨矿速度/微裂纹/磨矿概率Key words
high pressure grinding rolls/grinding kinetic/grinding speed/micro-crack/grinding probability分类
矿业与冶金引用本文复制引用
侯英,印万忠,朱巨建,姚金,吴凯..不同碎磨方式下紫金山金铜矿石的磨矿动力学行为[J].中南大学学报（自然科学版）,2017,48(5):1127-1133,7.基金项目
国家自然科学基金资助项目(51374079) (Project(51374079) supported by the National Natural Science Foundation of China) （51374079）
