秦皇岛某微细粒铁矿搅拌磨细磨—磁选工艺试验研究  

Research on Technology Optimization of Fine Grinding and Magnetic Separation for a Fine-grained Iron Ore in Qinhuangdao

作　　者：龙渊[1,2] 刘瑜 肖骁[1,2] 张国旺 赵湘[1,2] 石立 LONG Yuan;LIU Yu;XIAO Xiao;ZHANG Guowang;ZHAO Xiang;SHI Li(Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012 , Hunan, China;Hunan JinMill Technology Co., Ltd., Changsha 410012, Hunan, China)

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012 [2]湖南金磨科技有限责任公司,湖南长沙410012

出　　处：《矿产保护与利用》2021年第5期123-126,共4页Conservation and Utilization of Mineral Resources

摘　　要：采用立式搅拌磨机作为微细粒级矿物的再磨设备,以秦皇岛地区微细粒级铁矿为试验样品,进行了磨矿及磁选条件试验研究,结果表明,磨矿产品粒度达到-0.038 mm占95.43%,经一次粗选和两次精选可以获得产率66.12%、磁性铁品位为64.06%、回收率为97.16%,全铁品位为65.94%的优质铁精粉。磨机磨矿电耗测试表明,当磨矿产品粒度达-0.038 mm约占95.00%时,磨矿电耗为15.20 kW·h/t。该试验表明,秦皇岛地区的铁矿可以通过细磨解离获得好的选矿指标,立式搅拌磨机是一种高效的细磨设备。A vertical stirring mill is used as the regrinding equipment for fine-grained minerals.The fine-grained iron ore in the Qinhuangdao area is used as the test sample to conduct a test study on grinding and magnetic separation conditions.The results show that the particle size of the ground product reaches-0.038 mm It accounts for 95.43%.High-quality iron powder with a yield of 66.12%,a magnetic iron grade of 64.06%,a recovery rate of 97.16%,and a total iron grade of 65.94%can be obtained after one rough selection and two selections.The grinding power consumption test of the mill shows that when the particle size of the grinding product reaches-0.038 mm,which accounts for about 95.00%,the grinding power consumption is 15.20 kW·h/t.The test shows that the iron ore in the Qinhuangdao area can obtain good beneficiation indexes through fine grinding and dissociation.The vertical mixing mill is an efficient fine grinding equipment.

关 键 词：微细粒铁矿 细磨 立式搅拌磨机 磁选 

分 类 号：TD951.1[矿业工程—选矿] TD924