弓长岭选矿厂粗精矿搅拌磨再磨技术研究  

Experimental Study on Re-grinding of Middling Concentrate from Gongchangling Concentrator via Stirred Mill

作　　者：杜艳清 李宏 余莹[1] 王家奇 高鹏[2,3] 余建文 DU Yanqing;LI Hong;YU Ying;WANG Jiaqi;GAO Peng;YU Jianwen(Concentrator of Gongchangling Mining Company of Ansteel;School of Resources and Civil Engineering,Northeastern University;National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources)

机构地区：[1]鞍钢集团弓长岭矿业公司选矿厂,辽宁省辽阳市110000 [2]东北大学资源与土木工程学院 [3]难采选铁矿资源高效开发利用技术国家地方联合工程研究中心

出　　处：《现代矿业》2021年第11期130-133,共4页Modern Mining

基　　金：国家自然科学基金(编号:52074067)。

摘　　要：以弓长岭选矿厂一段磁选粗精矿为研究对象,为验证搅拌磨代替现场二、三段球磨作业的可行性,在试验室条件下进行了搅拌磨再磨技术研究。研究结果表明:在适宜的磨矿工艺参数为介质尺寸7 mm、搅拌器转速650 r/min、充填率80%、磨矿浓度70%、料球比0.8、磨矿细度-0.043 mm95.20%时,磁选可获得全铁品位67.09%、铁回收率92.43%的优质铁精矿,为选厂的工业技术改造提供了参考。Taking the first stage magnetic concentrate of Gongchangling Concentrator as the research object,in order to verify the feasibility of the stirred mill replacing the second and third stage ball mills,a study of the stirring mill regrinding was carried out under laboratory conditions.The appropriate grinding parameters were determined to be a media size of 7 mm,agitator speed of 650 r/min,filling rate of 80%,pulp density of 70%,and material ball ratio of 0.8.When the middling magnetic concentrate was ground to-0.043mm accounting for 95.0%,the iron concentrate with iron grade of 67.09%and iron recovery of 92.43%was obtained by low-intensity magnetic separation,which provides a useful reference for the industrial technological transformation of the concentrator.

关 键 词：搅拌磨 再磨 陶瓷介质 磁选 

分 类 号：TD951[矿业工程—选矿]