四川某低品位稀土尾矿回收稀土实验研究  

Experimental Study on the Recovery of Rare Earth from a Low Grade Rare Earth Tailings in Sichuan

作　　者：周政 熊文良[1] 张丽军[1] 陈达[1] 蔺慧杰 欧阳安妮 Zhou Zheng;Xiong Wenliang;Zhang Lijun;Chen Da;Lin Huijie;Ouyang Anni(Institute of Multipurpose Utilization of Mineral Resources,Sichuan Rare Earth Technology Innovation Center,Technical Innovation Center of Rare Earth Resources,China Geological Survey,Chengdu,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,四川省稀土技术创新中心,中国地质调查局稀土资源应用技术创新中心,四川成都610041

出　　处：《矿产综合利用》2023年第4期66-70,共5页Multipurpose Utilization of Mineral Resources

基　　金：四川省科技计划项目(2022JDR0355,2022ZHCG0124,2022ZYD0126)。

摘　　要：这是一篇矿物加工工程领域的论文。本研究以四川某稀土尾矿为研究对象,通过工艺矿物学研究表明尾矿中稀土金属成分的分布矿物较一致,主要存在矿物为氟碳铈矿及氟碳钙铈矿。由于样品中稀土品位较低,仅为1.06%,采用重选工艺对尾矿中的稀土矿物进行预富集,以达到降低选矿成本的目的。对预富集的产品开展浮-磁工艺研究,捕收剂采用自主研发的植物基部分取代氨基苯环的绿色高效药剂RF802,抑制剂采用水玻璃,经一粗三精一扫的浮选工艺和强磁选工艺,可获得REO品位为53.63%、回收率为70.54%的稀土精矿,实现了该低品位稀土尾矿中稀土矿物的有效回收利用。This is an essay in the field of mineral processing engineering.This study focuses on a rare earth tailing in Sichuan province.Mineralogy research shows that the distribution minerals of rare earth metal composition in the tailing are relatively consistent and the main minerals are bastnasite and synchisite.For the reason that the low grade of rare earth in the sample,only contains 1.06%,the gravity separation process is adopted to preconcentrate the rare earth minerals in the tailing to reduce the cost of processing.The floating-magnetic process is carried out on the preconcentration product with a self-developed mixed collector and water glass as inhibitor.The combined flotation process of "one roughing-one sweeping-three cleanings" and high intensity magnetic separation could obtain a rare earth concentrate with REO grade of53.63% and recovery of 70.54% which successfully achieves the recycling rare earth from the low-grade rare earth tailings.

关 键 词：矿物加工工程 稀土尾矿 预富集 浮选 磁选 

分 类 号：TD955[矿业工程—选矿]