纳米陶瓷球作细磨介质下的磨矿能耗与粒度分布特征  

Grinding energy consumption and particle size distribution characteristics of ground products with the nano-ceramic ball as the fine grinding medium

作　　者：吴志强 方鑫 童佳琪 廖宁宁 徐今冬 吴彩斌[1] WU Zhiqiang;FANG Xin;TONG Jiaqi;LIAO Ningning;XU Jindong;WU Caibin(School of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学资源与环境工程学院

出　　处：《有色金属科学与工程》2019年第5期91-96,共6页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51764015);大学生创新训练计划资助项目(DC2018-008)

摘　　要：纳米陶瓷球是一种以高铝为主要成分的轻比重磨矿介质.以1.18~2 mm、0.6~1.18 mm、0.3~0.6 mm 3个粒级样为研究对象,对其分别采用相同直径的纳米陶瓷球和钢球进行分批次磨矿试验,分析了其磨矿产品的粒度分布和磨矿能耗分布、能量利用率.试验结果表明,纳米陶瓷球作为细磨介质,与钢球相比,磨矿产品也有相同的粒度分布规律,符合JK粒度破碎模型.在相同磨矿条件下,纳米陶瓷球磨矿生产能力显然比不上钢球.但纳米陶瓷球比重轻,对能量利用程度大,磨矿产品中过粉碎更轻.纳米陶瓷球可能是立式球磨机中一种新型细磨介质.The nano-ceramic ball,whose main component is high aluminum,is a grinding medium with a light specific gravity.The samples in the size of 1.18~2 mm,0.6~1.18 mm,0.3~0.6 mm are taken as the research objects,and the nano-ceramic ball and steel ball of the same diameter are used for batch grinding tests.Then the particle size distribution,grinding energy consumption distribution and energy utilization of ground products are analyzed.The tests show that the nano-ceramic ball,as a fine grinding medium,has the same particle size distribution law as the steel ball,both of which is consistent with the JK size-dependent breakage model.Under the same grinding conditions,the nano-ceramic ball is obviously inferior to the steel ball in terms of grinding production capacity.However,it might come out as a new type of fine grinding medium in vertical ball mills for its light gravity,high energy utilization and soft grinding.

关 键 词：纳米陶瓷球 钢球 磨矿能耗 粒度分布特征 粒度破碎模型 

分 类 号：TD921.4[矿业工程—选矿]