Abstract
The manganese silicate and calcium ferrite commonly generated during the treatment process of manganese ore results in difficult separation of manganese and iron. In this study, the migration behaviors of ferromanganese spinel and gangue compounds in a microwave field were explored by examining the corresponding phase and microstructural evolutions. Different from the traditional process, the interface reactions depend on the diffusion of Mn2+ and Fe2+ towards the surface of the gangue particles, owing to the microwave absorption ability of ferrite being better than that of calcium oxide. Compared with manganese, iron more easily combined with silicon oxide to form silicates. CaO induced the lattice transformation of the ferromanganese spinel to calcium manganese ferrite. The migration rate of manganese was faster than that of iron in the microwave field. The appropriate mass ratio (m(CaO)/m(SiO2)) reduced the negative impact of gangue components on the reduction process of ferromanganese.
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This work was partially supported by the National Natural Science Foundation of China (No. 52204282), and the college student innovations special projects of Wuhan University of Science and Technology (No. 22z118).
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Ye, Q., Jiang, Y., Lv, J. et al. Phase Evolution Between Ferromanganese Spinel and Gangue Components with Microwave Induction in Reducing Atmosphere. JOM 75, 4341–4349 (2023). https://doi.org/10.1007/s11837-023-06039-3
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DOI: https://doi.org/10.1007/s11837-023-06039-3