Coupling relationship between multicomponent recovery of rare earth tailings
来源期刊：Rare Metals2017年第3期
论文作者：Yue Zhang Hai Lin Ying-Bo Dong Xiao-Fang Xu Xin Wang Yue-Jiao Gao
文章页码：220 - 228
摘 要：About 90%rare earth minerals and many other valuable minerals are heaped as iron tailings without comprehensive utilization.In order to comprehensively recover these valuable minerals,in a view of the valuable ore type of Baotou Steel tailing and embedded features,valuable components flow and their respective recovery coupling relationship in beneficiation flowsheet were analyzed;process flows and parameters which could give consideration to four kinds of components were determined.TFe,rare earth oxide（REO）,niobium and fluorite recoveries could reach 72.70%,81.84%,78.58%and60.18%in low-intensity/high-intensity magnetic separation,respectively.High-intensity magnetic concentration was treated by REO direct flotation;the recovery is75.43%,on the base of which Fe could be separated completely from Nb.The underflow was treated by reduction roasting-low-intensity magnetic separation.And the relationship between the recoveries of these valuable components was also discussed.
Yue Zhang1,2，Hai Lin1,2，Ying-Bo Dong1,2，Xiao-Fang Xu1,2，Xin Wang1,2，Yue-Jiao Gao1,2
1. School of Civil and Environmental Engineering, University of Science and Technology Beijing2. Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, University of Science and Technology Beijing
摘 要：About 90%rare earth minerals and many other valuable minerals are heaped as iron tailings without comprehensive utilization.In order to comprehensively recover these valuable minerals,in a view of the valuable ore type of Baotou Steel tailing and embedded features,valuable components flow and their respective recovery coupling relationship in beneficiation flowsheet were analyzed;process flows and parameters which could give consideration to four kinds of components were determined.TFe,rare earth oxide（REO）,niobium and fluorite recoveries could reach 72.70%,81.84%,78.58%and60.18%in low-intensity/high-intensity magnetic separation,respectively.High-intensity magnetic concentration was treated by REO direct flotation;the recovery is75.43%,on the base of which Fe could be separated completely from Nb.The underflow was treated by reduction roasting-low-intensity magnetic separation.And the relationship between the recoveries of these valuable components was also discussed.
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