Effects of smelting parameters on the slag/metal separation behaviors of Hongge vanadium-bearing titanomagnetite metallized pellets obtained from the gas-based direct reduction process
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第6期
论文作者：Cong Feng Man-sheng Chu Jue Tang Zheng-gen Liu
文章页码：609 - 622
摘 要：Smelting separations of Hongge vanadium-bearing titanomagnetite metallized pellets（HVTMP）prepared by gas-based direct reduction were investigated,and the effects of smelting parameters on the slag/metal separation behaviors were analyzed.Relevant mechanisms were elucidated using X-ray diffraction analysis,FACTSAGE 7.0 calculations,and scanning electron microscopy observations.The results show that,when the smelting temperature,time,and C/O ratio are increased,the recoveries of V and Cr of HVTMP in pig iron are improved,the recovery of Fe initially increases and subsequently decreases,and the recovery of Ti O2 in slag decreases.When the smelting Ca O/Si O2 ratio is increased,the recoveries of Fe,V,and Cr in pig iron increase and the recovery of Ti O2 in slag initially increases and subsequently decreases.The appropriate smelting separation parameters for HVTMP are as follows:smelting temperature of 1873 K;smelting time of 30–50 min;C/O ratio of 1.25;and Ca O/Si O2 ratio of 0.50.With these optimized parameters（smelting time:30 min）,the recoveries of Fe,V,Cr,and Ti O2 are 99.5%,91.24%,92.41%,and 94.86%,respectively.
Cong Feng，Man-sheng Chu，Jue Tang，Zheng-gen Liu
School of Metallurgy, Northeastern University
摘 要：Smelting separations of Hongge vanadium-bearing titanomagnetite metallized pellets（HVTMP）prepared by gas-based direct reduction were investigated,and the effects of smelting parameters on the slag/metal separation behaviors were analyzed.Relevant mechanisms were elucidated using X-ray diffraction analysis,FACTSAGE 7.0 calculations,and scanning electron microscopy observations.The results show that,when the smelting temperature,time,and C/O ratio are increased,the recoveries of V and Cr of HVTMP in pig iron are improved,the recovery of Fe initially increases and subsequently decreases,and the recovery of Ti O2 in slag decreases.When the smelting Ca O/Si O2 ratio is increased,the recoveries of Fe,V,and Cr in pig iron increase and the recovery of Ti O2 in slag initially increases and subsequently decreases.The appropriate smelting separation parameters for HVTMP are as follows:smelting temperature of 1873 K;smelting time of 30–50 min;C/O ratio of 1.25;and Ca O/Si O2 ratio of 0.50.With these optimized parameters（smelting time:30 min）,the recoveries of Fe,V,Cr,and Ti O2 are 99.5%,91.24%,92.41%,and 94.86%,respectively.
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