Abstract
Sintering-blast furnace process is one of the most common methods for treating limonitic laterite. To reduce the negative impact of high aluminum content on the viscosity of blast furnace slag, adjusting the MgO/Al2O3 ratio of sinter is simple and effective. However, the effect of MgO/Al2O3 on the sintering process of limonitic laterite is still not clear. In this study, the effect of MgO/Al2O3 ratio on the output and quality indexes, phase compositions, and liquid phase content of sinter was investigated detailly. The results indicated that within the range of MgO/Al2O3 of 0.1–0.4, the output and quality indexes of the limonitic laterite sinter showed minimal fluctuations. While the value exceeded 0.4, the liquid phase content in the sinter significantly decreased, leading to a reduction of sinter strength. The MgO content in the liquid phase approached saturation after 0.4 MgO/Al2O3, further increasing the ratio would cause MgO to accumulate in spinel.
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Acknowledgements
The authors would express their sincere thanks to National Natural Science Foundation of China (Number U1960114), The Science and Technology Innovation Program of Hunan Province (2023RC1025), and Xuchang Talent Plan (Number 2021-178).
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Tu, Y., Zhang, Y., Su, Z. (2024). Assessing MgO/Al2O3 Effect on Limonitic Laterite Sintering Process. In: Peng, Z., et al. Characterization of Minerals, Metals, and Materials 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50304-7_11
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