Abstract
With the aim of developing a novel aluminothermic reduction method for preparation of low-oxygen low-aluminum ferrotitanium by multistage deep reduction we studied the effects of the ratio of reductant Al on the occurrence and distribution of Al and O residuals. The results indicated that Al residual was present in the form of Ti3Al and Al2O3 inclusions. O residual in ferrotitanium with Ti content of 21.22–26.2 wt.% was mainly present in the form of Al2O3 inclusions, but in the form of Ti4Fe2O, TiO, and Al2O3 inclusions in ferrotitanium with Ti content of 49.64–55.42 wt.%. With decreasing ratio of reductant Al, the Al content of those two types of ferrotitanium first decreased then increased, while the O content increased. Al residue in the form of intermetallic compound decreased while that in the form of Al2O3 inclusions increased. The content and occurrence state of Al and O residuals can thus be controlled by adjusting the ratio of reduction agent Al.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P. Mrutyunjay, K.P. Raja, C.G. Rakesh, S. Etsuro, and N. Takashi, High Temp. Mater. Process. 29, 495 (2006).
C.C. Qi, X.Y. Hua, K.H. Chen, Y.F. Jie, Z.R. Zhou, J.J. Ru, L. Xiong, and K. Gong, J. Miner. Metall. Mater. 1, 68 (2015).
X.L. Xin, J. Yang, Y.N. Wang, R.Z. Wang, and W.L. Wang, Ironmak. Steelmak. 234, 43 (2016).
P. Minkyu, J. Jungmock, H.J. Kang, and P. Jongjin, ISIJ Int. 535, 53 (2013).
Z.H. Dou, T.A. Zhang, J.M. Yao, and L.P. Niu, J. Northeast. Univ. (Nat. Sci.) 1000, 29 (2008).
Z.H. Dou, T.A. Zhang, J.M. Yao, X.L. Jiang, L.P. Niu, and J.C. He, Chin. J. Process Eng. 247, 9 (2009).
G.Y. Shi, T.A. Zhang, L.P. Niu, and Z.H. Dou, Chin. J. Process Eng. 695, 11 (2011).
V.M. Chumarev, A.Y. Dubrovskii, I.P. Pazdnikov, Y.Y. Shurygin, and N.I. Sel’Menskikh, Russ. Metall. 459, 6 (2008).
S. Tan, T. Örs, M.K. Aydnol, T. Öztürk, and İ. Karakaya, J. Alloys Compd. 368, 475 (2009).
R. Shi, C. Bai, C. Hu, X. Liu, and J. Du, Int. J. Miner. Metall. Mater. 99, 47 (2011).
J.H. Du, Z.P. Xi, Q.Y. Li, Z.X. Li, and Y. Tang, Trans. Nonferrous Met. Soc. China 17, 514 (2007).
Q. Huang, X. Wang, M. Jiang, Z. Hu, and C. Yang, Steel Res. Int. 87, 445 (2016).
T.A. Zhang, Z.H. Dou, Z.M. Zhang, Y. Liu, C. Wang, G.Z. Lv, J.C. He, and X.L. Jiang, CN Patent, 104120304B (2016).
T.A. Zhang, Z.H. Dou, Z.S. Yin, H.G. Tang, L.P. Niu, Y. Liu, G.Z. Lv, and J.C. He, CN Patent, 101967531A (2011).
V.Y. Gertsman and O. Dremailova, J. Mater. Sci. 4490, 41 (2006).
M. Dobrescu, S. Dimitriu, and M. Vasilescu, Metal. Int. 73, 16 (2011).
C. Wang, N.T. Nuhfer, and S. Sridhar, Metall. Mater. Trans. B 1084, 41 (2010).
Acknowledgements
This research was supported by the National Natural Science Foundation of China (51422403, 51504064), Fundamental Research Funds for the Central Universities (N162505002), and National Basic Research Program of China (973 Program, No. 2013CB632606).
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Cheng, C., Dou, ZH., Zhang, TA. et al. Distribution and Control Mechanism of Al and O Residuals in Ferrotitanium Prepared by Aluminothermic Reduction with Insufficient Al. JOM 71, 809–814 (2019). https://doi.org/10.1007/s11837-018-3212-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11837-018-3212-6