邦德可磨度测定替代方法的研究进展  

Research Progress on Alternative Approaches for Bond Grindability Test

作　　者：李沛 刘建远 于涛 曹钊 Li Pei;Liu Jianyuan;Yu Tao;Cao Zhao(Institute of Mining Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;BGRIMM Technology Group,Beijing 102628,China;MCC Huaye Duddar Mining Company(Pvt.)Ltd.,Karachi 999010,Pakistan)

机构地区：[1]内蒙古科技大学矿业研究院,内蒙古包头014010 [2]北京矿冶科技集团有限公司,北京102628 [3]中国华冶杜达矿业有限公司,俾路支卡拉奇999010

出　　处：《金属矿山》2020年第7期10-15,共6页Metal Mine

基　　金：内蒙古自治区科技计划项目(编号:KJJH-201901);内蒙古科技大学科研启动基金项目(编号:2017QDL-S06)。

摘　　要：邦德可磨度被用于计算指定粉碎程度下的比能耗,进而辅助磨矿回路的设计与设备选型。其标准测定方法耗时耗力,且所得信息很有限。对此,业内提出了若干替代方法克服上述缺点。基于一阶磨矿动力学,马格达利诺维奇提出了用2次开路磨矿模拟邦德可磨度试验的终点状态,极大缩短了试验量,然而对软硬混合矿石效果不佳。列文认为可磨度试验中每转对应标准磨矿条件下的能耗应是定值,并由大量数据计算出其平均值;据此,可通过若干开路试验得到满足粉碎程度的转数,进而直接求得邦德功指数。在总量平衡模型的框架内,研究者们可通过闭路或开路的磨矿试验建立磨矿动力学模型,之后在计算机上模拟邦德可磨度试验,在作业要求变化时只需更新模拟条件而不必做新的试验。随着对岩石力学研究的深入,研究者们逐步探索可磨度/功指数与岩石力学性质的关系,提出了若干方法,以便在采场中就能预测矿石对磨矿环节的影响,该方向意义较大,且有进一步发展的空间。Bond grindability is used to calculate the specific energy for a comminution process,which assists in design of grinding circuit and selection of equipment.However,Bond grindability test is time-consuming and exhausting,and limited information is acquired from the test.Researchers have been working on development of alternative approaches for Bond grindability test.Observing most ores presented first-order grinding kinetics,Magdalinovic simulated equilibrium state of Bond grindability test by only 2 open-circuit grinding test,decreasing the experimental work significantly.Levin assumed that to any ore type the energy was constant which was consumed in a standard mill per revolution,and its mean value was calculated.By several grinding tests,the required number of revolutions was obtained,as well as the work index.Bond grindability test could be simulated by population balance model whose modeling parameters were derived from several grinding tests.The simulation could save much labor work as the grinding condition varied.Owing to the faster development of rock mechanics,researchers has been trying to correlate grindability/work index with mechanical properties of the ores to predict its grindability in mining site,which is a promising area to explore.

关 键 词：磨矿 邦德可磨度测试 邦德功指数 替代方法 

分 类 号：TD921.4[矿业工程—选矿]