TY - JOUR T2 - Journal of Mining and Metallurgy, Section B: Metallurgy TI - Effect of high MgO/Al2O3 ratio (1.2 to 2.2) on sintering behavior and metallurgical properties VL - 57 IS - 1 SP - 21 EP - 30 PY - 2021 DA - 09 December 2020 DO - 10.2298/JMMB200330034J UR - https://doi.org/10.2298/JMMB200330034J AU - Ju, J.-T. AU - Tang, C.-M. AU - Pang, Z.-G. AU - Xing, X.-D. AU - Ji, G.-H. AD - a School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China; b Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi'an, China; AB - The sintering pot test was used to investigate the effect of MgO/Al2O3 ratio in the range of 1.2 to 2.2 on the sintering behavior of iron ore. The main characterization methods of X-ray diffraction (XRD) and scanning electron microscopyenergy disperse spectroscopy (SEM-EDS) were employed. The results showed that the strength, yield, and reducibility of sinter initially increased and then decreased with increasing MgO/Al2O3 ratio from 1.2 to 2.2. The index would reach the peak value with the strength of 70.6% and the yield of 83.81%, respectively, when MgO/Al2O3 ratio was 1.8. The reduction index would reach the peak value of 88.54% with MgO/Al2O3 ratio of 1.6. The FeO content, solid fuel consumption, and the RDI+3.15 of sinter increased dramatically with increasing MgO/Al2O3 ratio. When MgO/Al2O3 ratio was up to 2.2, the solid fuel consumption and RDI+3.15 reached a maximum value of 61.93 kg/t and 96.1%, respectively. The form of SFCA was acicular when MgO/Al2O3 ratio was less than 1.6 and then transformed to plate-like which content also reduced. The magnetite increased while hematite decreased with enhancing MgO/Al2O3 ratio. KW - MgO/Al2O3 ratio KW - Sintering KW - Strength KW - Metallurgical properties N1 - Correspondence Address: X.-D. Xing; a School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China; b Metallurgical Engineering Technology Research Center of Shaanxi Province, Xi'an, China;; email: xaxingxiangdong@163.com N1 - J. Min. Metall. Sect. B-Metall., 57 (1) (2021) 21-30. doi:10.2298/JMMB200330034J PB - Technical Faculty in Bor SN - 1450-5339 (ISSN) LA - English J2 - J. Min. Metall. Sect. B Metall. M3 - Article ER -