低品位铝土矿在振动磨机中的选择性磨矿研究  

Research on Selective Grinding of Low Grade Bauxite in Vibration Mill

作　　者：韩跃新[1] 朱一民[1] 印万忠[1] 田祎兰[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《中国粉体技术》2009年第5期16-20,共5页China Powder Science and Technology

基　　金：国家重点基础研究发展计划(973计划)项目;编号:2005CB623701

摘　　要：以氧化铝与氧化硅的质量比为4.4的铝土矿为研究对象,采用振动磨机对铝土矿进行了选择性磨矿试验研究。结果表明:磨矿浓度为70%(质量分数)时,磨矿产品粗粒级的氧化铝与氧化硅的质量比较高,选择性较好;料球比为0.9时,其选择性磨矿效果较好;湿式磨矿较干式磨矿的选择性效果更好;在此最适宜条件下,磨矿产品中大于0.23mm的粗粒级氧化铝与氧化硅的质量比可达到7.5以上,产率为25%,Al2O3回收率为27%,说明对低品位铝土矿选择性粉碎脱硅是可行的。The selective grinding in vibration mill on bauxite with low ratio of Al2O3 and SiO2 （4.4） was studied, The results showed that the effect of selective grinding of bauxite was better when the pulp concentration was 70% and the grinding materials to charge ratio was 1.2. The optimal grinding conditions of the ball mill with bauxite were：grinding materials to charge ratio, 1.2 ; pulp concentration, 70%, wet milling. Under the conditions, the rate of ground product with ratio of A1203 and SiO2 over 7.5 was 27% and the recovery of Al2O3 was 30%. It was demonstrated to be feasible to desilicate bauxite with low grade by selective grinding.

关 键 词：振动磨机 铝土矿 选择性磨矿 

分 类 号：TD921[矿业工程—选矿]