TY - GEN
T1 - Enhanced reduction of CaF2and NaF on vanadium titano-magnetite carbon composite pellets
AU - Xing, Xiangdong
AU - Zhang, Jianliang
AU - Wang, Zhe
AU - Ren, Shan
AU - Cao, Mingming
AU - Liu, Zhengjian
AU - Lu, Mingchun
PY - 2013
Y1 - 2013
N2 - The effect of reduction temperature on the vanadium titano-magnetite carbon, composite pellets was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the discussion has put emphasis upon the enhanced reduction mechanism of additives containing CaF2 and NaF in this paper. The results showed that the reduction temperature of 1350°C was needed for the generation, mergence and growing up of metallic iron as well as monomer dissociation between metallic iron particles and slag phase in the vanadium titano-magnetite metallization pellets. The iron compound was completely reduced into metal iron, and Fe2TiO4 was mainly transformed into metal iron, (Fe,Mg)Ti2O5 and FeTiO 3 at 1350°C. The maximum metallization ratio was only 88.5% at 1350□ for 30 min without any additive. However, with the addition of 3.0% CaF2 or NaF, the metallization degree of pellets could reach up to 94.8% and 92.5%, respectively.
AB - The effect of reduction temperature on the vanadium titano-magnetite carbon, composite pellets was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the discussion has put emphasis upon the enhanced reduction mechanism of additives containing CaF2 and NaF in this paper. The results showed that the reduction temperature of 1350°C was needed for the generation, mergence and growing up of metallic iron as well as monomer dissociation between metallic iron particles and slag phase in the vanadium titano-magnetite metallization pellets. The iron compound was completely reduced into metal iron, and Fe2TiO4 was mainly transformed into metal iron, (Fe,Mg)Ti2O5 and FeTiO 3 at 1350°C. The maximum metallization ratio was only 88.5% at 1350□ for 30 min without any additive. However, with the addition of 3.0% CaF2 or NaF, the metallization degree of pellets could reach up to 94.8% and 92.5%, respectively.
KW - Additives
KW - Carbon composite pellets
KW - Metallization degree
KW - Vanadium titano-magnetite concentrate
UR - https://www.scopus.com/pages/publications/84876489969
M3 - 会议稿件
AN - SCOPUS:84876489969
SN - 9781118605691
T3 - TMS Annual Meeting
SP - 571
EP - 577
BT - 4th International Symposium on High-Temperature Metallurgical Processing - Held During the TMS 2013 Annual Meeting and Exhibition
T2 - 4th International Symposium on High-Temperature Metallurgical Processing - TMS 2013 Annual Meeting and Exhibition
Y2 - 3 March 2013 through 7 March 2013
ER -