典型文献
Recovery of titanium and vanadium from titanium-vanadium slag obtained by direct reduction of titanomagnetite concentrates
文献摘要：
A process of NaOH molten salt roasting-water leaching to treat titanium-vanadium slag obtained by direct reduction of titanomagnetite concentrates was investigated.X-ray diffraction(XRD),scanning electron microscopy(SEM)equipped with energy dispersive spectroscopy(EDS),and thermogravimetry-differential scanning calorimetry(TG-DSC)techniques were used to characterize the samples.The results show that anosovite(MgxTi3-xO5)and clinopyroxene[Ca(Ti,MgAl)(SiAl)2O6]are the major phases of titanium-vanadium slag.In the NaOH molten salt roasting process,titanium is converted to intermediate pro-duct Na2TiO3 and vanadium is converted to water-soluble vanadate.The response surface methodology(RSM)was used to optimize the roasting process conditions.NaOH to slag mass ratio(N/S)and roasting temperature are the main influential factors.Under the optimal roasting conditions,i.e.,roasting temperature of 550℃,N/S of 1.20,and roast-ing time of 80 min,the conversions of titanium and vana-dium are 96.5％and 93.0％,respectively.In the water leaching process,Na2TiO3 is converted to amorphous structure of H2TiO3 since Na+is exchanged with H+.Up to 93.0％vanadium is leached out under the optimal leaching conditions.Titanium and vanadium in the titanium-vana-dium slag can be separated and then recovered.
文献关键词：
中图分类号：
作者姓名：
Xue-Jie Liu;De-Sheng Chen;Jing-Long Chu;Wei-Jing Wang;Yong-Li Li;Tao Qi
作者机构：
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;School of Chemistry and Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Xue-Jie Liu;De-Sheng Chen;Jing-Long Chu;Wei-Jing Wang;Yong-Li Li;Tao Qi-.Recovery of titanium and vanadium from titanium-vanadium slag obtained by direct reduction of titanomagnetite concentrates)[J].稀有金属（英文版）,2022(05):1688-1696
A类：
anosovite,MgxTi3,xO5,SiAl,2O6,Na2TiO3,vana,Na+is
B类：
Recovery,titanium,vanadium,from,slag,obtained,by,direct,reduction,titanomagnetite,concentrates,process,NaOH,molten,salt,roasting,water,leaching,treat,was,investigated,ray,diffraction,scanning,electron,microscopy,equipped,energy,dispersive,spectroscopy,EDS,thermogravimetry,differential,calorimetry,DSC,techniques,were,used,characterize,samples,results,show,that,clinopyroxene,MgAl,are,major,phases,In,converted,intermediate,soluble,vanadate,response,surface,methodology,RSM,optimize,conditions,mass,ratio,temperature,main,influential,factors,Under,optimal,conversions,respectively,amorphous,structure,H2TiO3,since,exchanged,H+,Up,leached,out,under,Titanium,be,separated,then,recovered
AB值：
0.438789
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