典型文献
Effect of bastnaesite as reductant on hematite reduction during in-situ suspension magnetization roasting of refractory iron ore under neutral atmosphere
文献摘要：
The iron tailings of Bayan Obo mines are solid waste,which occupies land area and also causes environ-mental pollution;however,this waste can be recycled.In this study,based on the characteristics of iron minerals and fluorocarbonate contained in Bayan Obo iron tailings,clean magnetization roasting of iron minerals by bastnaesite from iron tailings during in-situ suspension magnetization roasting in a neutral atmosphere was explored.The results show that for iron tailings with a mass of 12 g,a N2 gas flow rate of 600 mL/min,and roasting for 5 min at 800℃,iron concentrate with a 60.44％iron grade at an iron recov-ery of 76.04％could be obtained.X-ray diffraction analysis showed that the weak magnetic hematite was reduced to strong magnetic magnetite in the neutral atmosphere,without additional reductant.The kinetics of the magnetization roasting of mineral mixtures(bastnaesite and hematite)in a neutral atmo-sphere showed that the optimal reaction mechanism function was the three-dimensional diffusion model with activation energy of 161.8838 kJ.mol-1;this indicates that the reaction was a heterogeneous,diffusion-controlled solid-state reaction.
文献关键词：
中图分类号：
作者姓名：
Wenbo Li;Jijia Chen;Wentao Zhou;Yuexin Han;Yan Shan
作者机构：
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
文献出处：
引用格式：
[1]Wenbo Li;Jijia Chen;Wentao Zhou;Yuexin Han;Yan Shan-.Effect of bastnaesite as reductant on hematite reduction during in-situ suspension magnetization roasting of refractory iron ore under neutral atmosphere)[J].矿业科学技术学报（英文版）,2022(04):877-886
A类：
fluorocarbonate
B类：
Effect,bastnaesite,reductant,hematite,reduction,during,situ,suspension,magnetization,roasting,refractory,under,neutral,atmosphere,tailings,Bayan,Obo,mines,solid,waste,which,occupies,land,area,also,causes,environ,mental,pollution,however,this,can,be,recycled,In,study,characteristics,minerals,contained,clean,by,from,explored,results,that,mass,N2,gas,flow,concentrate,grade,recov,ery,could,obtained,ray,diffraction,analysis,showed,weak,magnetic,reduced,strong,magnetite,without,additional,kinetics,mixtures,optimal,reaction,mechanism,function,three,dimensional,diffusion,model,activation,energy,kJ,indicates,heterogeneous,controlled,state
AB值：
0.474392
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