Phase equilibria relations in the V_(2)O_(5)-rich part of the Fe_(2)O_(3-)TiO_(2)-V_(2)O_(5) system at 1200℃ related to converter vanadium-bearing slag  

作　　者：Junjie Shi Yumo Zhai Yuchao Qiu Changle Hou Jingjing Dong Maoxi Yao Haolun Li Yongrong Zhou Jianzhong Li 

机构地区：[1]Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education),Northeastern University,Shenyang 110819,China [2]School of Metallurgy,Northeastern University,Shenyang 110819,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2024年第9期2017-2024,共8页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52204310);the China Postdoctoral Science Foundation(Nos.2020TQ0059 and 2020M570967);the Natural Science Foundation of Liaoning Province,China(No.2021-MS-083);the Fundamental Research Funds for the Central Universities(No.N2125010);the Open Project Program of Key Laboratory of Metallurgical Emission Reduction&Resources Recycling(Anhui University of Technology)of Ministry of Education(No.JKF22-02);the Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education.

摘　　要：The efficient recycling of vanadium from converter vanadium-bearing slag is highly significant for sustainable development and circular economy.The key to developing novel processes and improving traditional routes lies in the thermodynamic data.In this study,the equilibrium phase relations for the Fe_(2)O_(3)-TiO_(2)-V_(2)O_(5)system at 1200℃in air were investigated using a high-temperature equilibrium-quenching technique,followed by analysis using scanning electron microscopy-energy dispersive X-ray spectrometer and X-ray photoelectron spectroscopy.One liquid-phase region,two two-phase regions(liquid-rutile and liquid-ferropseudobrookite),and one three-phase region(liquid-rutile-ferropseudobrookite)were determined.The variation in the TiO_(2)and V_(2)O_(5)contents with the Fe_(2)O_(3)content was examined for rutile and ferropseudobrookite solid solutions.However,on further comparison with the predictions of FactSage 8.1,significant discrepancies were identified,highlighting that greater attention must be paid to updating the current thermodynamic database related to vanadium-bearing slag systems.

关 键 词：vanadium-bearing slag thermodynamics FactSage phase equilibria recovery 

分 类 号：TF841.3[冶金工程—有色金属冶金]