鞍千贫赤铁矿磁选精矿反浮选提纯试验  

Reverse Flotation for Improving Quality on Magnetic Concentrate of Low-grade Hematite Ore from Anqian

作　　者：徐冬林 李佩昱 李艳军[2,3] 高鹏 余建文[2,3] XU Donglin;LI Peiyu;LI Yanjun;GAO Peng;YU Jianwen(Anqian Mining Co.,Ltd.,Anshan Iron and Steel Group,Anshan 114043,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources,Shenyang 110819,China)

机构地区：[1]鞍钢集团鞍千矿业责任有限公司,辽宁鞍山114043 [2]东北大学资源与土木工程学院,辽宁沈阳110819 [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,辽宁沈阳110819

出　　处：《矿产保护与利用》2020年第2期70-73,共4页Conservation and Utilization of Mineral Resources

摘　　要：以鞍千贫赤铁矿石的磁选精矿为研究对象,采用醚胺类复配捕收剂DLT-I和改性淀粉抑制剂DLT-II,开展反浮选条件优化试验研究。结果表明,适宜的矿浆pH值为9.0,捕收剂DLT-I用量为125 g/t,抑制剂DLT-II用量为300 g/t。在单因素条件试验的基础上,经一粗一精三扫的浮选闭路试验,获得了浮选精矿TFe品位67.01%、回收率93.70%的技术指标,尾矿TFe品位为15.28%,为鞍千贫赤铁矿石的高效开发利用提供了借鉴。The reverse flotation condition test was carried out on the magnetic concentrate of low-grade hematite ore from Anqian by using the ether amine-based compound collector DLT-I and the modified starch depressant DLT-II.The suitable chemical system was determined to be the pulp pH value of 9.0,the collector DLT-I dosage of 125 g/t,and the depressant DLT-II dosage of 300 g/t.Based on the conditional tests,the technical indexes of the flotation concentrate with the TFe grade of 67.01%,the iron recovery of 93.70%,and the tailings grade of 15.28%was obtained by the process of the reverse flotation closed process of one roughing-one cleaning-three scavenging,which provided a reference for the efficient development and utilization of low-grade hematite ore from Anqian.

关 键 词：磁选精矿 反浮选 捕收剂 抑制剂 

分 类 号：TD951.1[矿业工程—选矿]